484 lines
18 KiB
Python
484 lines
18 KiB
Python
import struct
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from crc import Calculator, Crc16
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from tools.ByteConv import trans_list_to_str, trans_str_to_list, display_hex
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modbus_map = {
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# 1 - Hex
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# 2 - Int16
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# 3 - lnt32
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# 4 - str
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# 5 - addr
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# 6 - float
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0x01: ["Hex示例", 1],
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0x02: ["Int示例", 2],
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0x03: ["Int32示例", 3],
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0x04: ["str示例", 4, 16],
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0x10: ["addr示例", 5, 6],
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0x20: ["Float示例", 6],
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}
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frame_modbus = {
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# func: len_base, type, idx
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# type = 0, fixed length
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# type = 1, add uint8 length by idx
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# type = 2, add uint16 length by idx
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# type = 3, check sub func code by idx, choose fixed length
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0x03: [5, 1, 2],
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0x04: [5, 1, 2],
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0x06: [8, 0],
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0x07: [8, 3, 2, {0x01: 2, 0x02: 0, 0x03: 0}],
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0x10: [8, 0],
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0x11: [11, 2, 7]
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}
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def make_frame_modbus(block:dict):
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""" modbus 生成函数"""
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frame = []
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calculator = Calculator(Crc16.MODBUS)
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frame.append(block['addr_dev'])
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if block['type'] == 'update':
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""" 升级系列报文 """
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frame.append(0x07)
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if len(block['file']) <= block["header_offset"]:
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raise Exception("Modbus Update error, file too small.")
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if block['step'] == 'start':
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frame.append(0x01)
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frame.append(0x00)
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frame.append(0x00)
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frame.append(0x00)
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frame.append(block['header_offset'] // 256)
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frame.append(block['header_offset'] % 256)
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frame += list(block['file'][:block['header_offset']])
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elif block['step'] == 'trans':
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file_offset = block["header_offset"] + block['index'] * block['file_block_size']
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file_block = block['file'][file_offset: file_offset + block['file_block_size']]
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frame.append(0x02)
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frame.append(0x00)
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frame.append(block['index'] // 256)
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frame.append(block['index'] % 256)
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frame.append(len(file_block) // 256)
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frame.append(len(file_block) % 256)
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frame += list(file_block)
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elif block['step'] == 'end':
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frame.append(0x03)
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frame.append(0x00)
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frame.append(block['index'] // 256)
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frame.append(block['index'] % 256)
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frame.append(0x00)
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frame.append(0x00)
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else:
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raise Exception("Modbus Update Frame Step Error.")
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elif block['type'][:6] == 'record':
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""" 录波系列报文 """
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frame.append(0x11)
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frame_types = block['type'].split('_')
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if block['type'][7:10] == 'cfg':
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frame.append(0x01)
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elif block['type'][7:11] == 'data':
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frame.append(0x02)
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else:
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raise Exception("Modbus Record Frame Type Error.")
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if block['step'] == 'start':
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frame.append(0x00)
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elif block['step'] == 'next':
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frame.append(0x01)
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elif block['step'] == 'repeat':
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frame.append(0x02)
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else:
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raise Exception("Modbus Record Frame Step Error.")
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frame.append(block['file_block_size'] // 256)
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frame.append(block['file_block_size'] % 256)
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else:
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""" 数据读取系列报文 """
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data_addr = block['data_addr']
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if block['type'] == "read":
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frame.append(0x03)
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data_len = block['data_len']
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frame.append(data_addr // 256 % 256)
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frame.append(data_addr % 256)
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frame.append(data_len // 256 % 256)
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frame.append(data_len % 256)
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elif block['type'] == "write_one":
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frame.append(0x06)
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data_val = block['data_val']
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if data_val < 0:
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data_val += 0x1_0000
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frame.append(data_addr // 256 % 256)
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frame.append(data_addr % 256)
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frame.append(data_val // 256 % 256)
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frame.append(data_val % 256)
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elif block['type'] == "write_dual":
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frame.append(0x10)
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data_val = block['data_val']
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if data_val < 0:
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data_val += 0x1_0000_0000
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frame.append(data_addr // 256 % 256)
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frame.append(data_addr % 256)
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frame.append(0x00)
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frame.append(0x02)
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frame.append(0x04)
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frame.append(data_val // 256 % 256)
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frame.append(data_val % 256)
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data_val //= 0x1_0000
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frame.append(data_val // 256 % 256)
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frame.append(data_val % 256)
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elif block['type'] == "write_str":
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frame.append(0x10)
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data_len = len(block['data_val'])
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item_len = 2 * block['data_define'][data_addr][2]
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data_val = block['data_val']
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if data_len > item_len:
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raise Exception("Modbus data len oversize.")
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elif data_len < item_len:
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data_val += '\000' * (item_len - data_len)
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data_len = len(data_val)
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frame.append(data_addr // 256 % 256)
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frame.append(data_addr % 256)
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frame.append(0x00)
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frame.append(data_len // 2)
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frame.append(data_len)
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if type(data_val[0]) == str:
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data_val = list(map(lambda x: x.encode()[0], data_val))
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for i in range(data_len//2):
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frame.append(data_val[2*i + 1])
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frame.append(data_val[2*i])
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else:
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raise Exception("Modbus Frame Type Error.")
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crc = calculator.checksum(bytearray(frame))
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frame.append(crc % 256)
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frame.append(crc // 256)
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return frame
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def make_frame_dlt645(block:dict):
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""" dlt645 生成函数"""
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frame = []
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if block['type'] == 'modbus':
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""" Modbus 透传帧 """
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ctrl_code = 0x1F # Modbus 透传帧功能码
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data_frame = make_frame_modbus(block["data"])
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len_data = len(data_frame)
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else:
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raise Exception("Unknown dlt645 frame type.")
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frame.append(0x68)
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frame += block['addr'][:6]
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frame.append(0x68)
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frame.append(ctrl_code)
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frame.append(len_data)
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frame += data_frame
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frame.append(sum(frame) % 256)
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frame.append(0x16)
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return frame
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def display_data(modbus_map: dict, address: int, data: list):
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""" 格式化表示数据 """
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def display_str(data, len_data):
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item = bytearray(data[:2 * len_data])
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for i in range(len_data):
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t = item[2*i]
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item[2*i] = item[2*i+1]
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item[2*i+1] = t
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return item
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output = "Parse Result: \n"
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idx = address
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len_max = 0
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while data:
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data_len = 1
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data_label = "未知数据"
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if idx not in modbus_map.keys():
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item = data[0] * 0x0100 + data[1]
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item = display_hex(item, 4)
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else:
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current_map = modbus_map[idx]
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data_label = current_map[0]
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if current_map[1] == 1:
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""" Hex字符表示 """
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item = data[0] * 0x0100 + data[1]
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item = display_hex(item, 4)
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elif current_map[1] == 2:
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""" 16位数值表示 """
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item = data[0] * 0x0100 + data[1]
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if item > 0x8000:
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item -= 0x1_0000
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elif current_map[1] == 3:
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""" 32位数值表示 """
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item = data[2] * 0x0100 + data[3]
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item *= 0x10000
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item += data[0] * 0x0100 + data[1]
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if data[2] > 0x80:
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item -= 0x1_0000_0000
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data_len = 2
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elif current_map[1] == 4:
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""" 字符串表示 """
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data_len = current_map[2]
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item = display_str(data, data_len)
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item = item.replace(b'\xff', b' 0xFF')
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item = item.decode()
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elif current_map[1] == 5:
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""" 载波地址表示 """
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data_len = current_map[2]
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item = display_str(data, data_len)
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item = trans_list_to_str(item)
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elif current_map[1] == 6:
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""" 浮点数值表示 """
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temp = [data[2], data[3], data[0], data[1]]
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item = struct.unpack('>f', bytes(temp))[0]
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data_len = 2
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if len_max < len(data_label):
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len_max = len(data_label)
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len_remain = len_max - len(data_label)
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output_line = "\t".join([display_hex(idx, 4), data_label + " " * len_remain, str(item)])
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idx += data_len
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del data[0:data_len * 2]
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output += output_line + "\n"
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return output
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def find_frame_modbus(buffer, address, frame_defines: dict=frame_modbus):
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""" 搜索合法modbus帧子串 """
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len_buffer = len(buffer)
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pos_frame, len_frame = 0, 0
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calculator = Calculator(Crc16.MODBUS)
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for i in range(len_buffer):
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if buffer[i] != address:
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continue
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if (buffer[i+1] & 0x7F) not in frame_defines.keys():
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continue
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frame_define = frame_defines[buffer[i+1] & 0x7F]
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j = frame_define[0]
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if buffer[i+1] & 0x80:
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j = 5
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elif frame_define[1] == 0:
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pass
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elif frame_define[1] == 1:
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j += buffer[i+frame_define[2]]
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elif frame_define[1] == 2:
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j += buffer[i+frame_define[2]] * 0x100 + buffer[i+frame_define[2]+1]
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elif frame_define[1] == 3:
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if buffer[i+frame_define[2]] not in frame_define[3].keys():
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continue
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j += frame_define[3][buffer[i+frame_define[2]]]
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else:
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raise Exception("Unknow Modbus Define type.")
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if calculator.checksum(buffer[i:i+j-2]) == (buffer[i+j-1] * 0x100 + buffer[i+j-2]):
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pos_frame, len_frame = i, j
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break
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return buffer[pos_frame: pos_frame+len_frame]
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def find_frame_dlt645(buffer, address: list):
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""" 搜索合法645帧子串 """
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len_buffer = len(buffer)
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pos_frame, len_frame = 0, 0
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for i in range(len_buffer):
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if buffer[i] != 0x68 or buffer[i+7] != 0x68:
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continue
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if address[0] != 0xAA and buffer[i+1:i+7] == bytes(address):
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continue
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j = buffer[i+9] + 12
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if sum(buffer[i:i+j-2]) % 0x100 == buffer[i+j-2]:
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pos_frame, len_frame = i, j
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break
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return buffer[pos_frame: pos_frame+len_frame]
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def check_frame_modbus(frame, block=None):
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""" 校验modbus帧回复 """
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if len(frame:=find_frame_modbus(frame, block['addr_dev'])) == 0:
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raise Exception("No frame data")
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code_func = frame[1]
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code_subfunc = frame[2]
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if code_func == 0x07:
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""" 升级回复帧 """
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if frame[3] == 0x00:
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check_result = True
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else:
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check_result = False
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update_index = frame[4] * 256 + frame[5]
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check_hope = 0
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if code_subfunc == 0x01:
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""" 处理帧头 """
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check_hope = frame[6] * 256 + frame[7]
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elif code_subfunc == 0x02:
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""" 解析帧序号及返回值, 不做序列号校验 """
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elif code_subfunc == 0x03:
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""" 升级结束 """
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else:
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raise Exception("Func code or Return code error.")
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return check_result, update_index, check_hope
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elif code_func == 0x03 or code_func == 0x04:
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""" 数据读取帧 """
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if frame[2] == len(frame[3:-2]):
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if type(block) is dict:
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data_addr = block['data_addr']
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return display_data(block['data_define'], data_addr, list(frame[3:-2]))
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else:
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return trans_list_to_str(frame[3:-2])
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else:
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raise Exception("Frame read error.")
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elif code_func == 0x06:
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""" 单个数据写入帧 """
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return trans_list_to_str(frame[2:-2])
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elif code_func == 0x10:
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""" 多个数据写入帧 """
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return trans_list_to_str(frame[2:-2])
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elif code_func == 0x11:
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""" 录波功能帧 """
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frame_data = {
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'seq': frame[5] * 0x100 + frame[6],
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'total': frame[3] * 0x100 + frame[4],
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'data': frame[9:-2]
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}
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if frame[2] == 0x01:
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frame_data['type'] = 'config'
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elif frame[2] == 0x02:
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frame_data["type"] = 'data'
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else:
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raise Exception("Unknow data type")
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return True, frame_data
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elif code_func & 0x80:
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""" 错误返回帧 """
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if code_func & 0x7F == 0x07:
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return False, frame[3], code_func, code_subfunc
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return False, frame[2], code_func
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else:
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raise Exception(f"Frame Date error. func={code_func}, func_sub={code_subfunc}, len={len(frame)}")
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def check_frame_dlt645(frame, block=None):
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""" 校验dlt645帧回复 """
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if len(frame:=find_frame_dlt645(frame, block['addr'])) == 0:
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raise Exception("No frame data")
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code_func = frame[8]
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if code_func == 0x9F:
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block = block['data']
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return check_frame_modbus(frame[10:-2], block)
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else:
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raise Exception("DLT645 Frame type error.")
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if __name__ == "__main__":
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buffer_test = trans_str_to_list("62 01 03 25 1C 00 01 03 3A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10 01 F3 00 06 00 12 01 DB 00 19 00 BA 00 00 24 62 00 00 25 1C 00 00 00 0F 00 01 00 07 00 2B 02 4D FD 6C FD 6C 01 20 01 20 73 08 4D FD 6C FD")
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buffer_test1 = trans_str_to_list("01 03 3A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 11 01 F4 00 06 00 13 01 DB 00 1A 00 D5 00 00 25 AE 00 00 26 83 00 00 00 0C FF FF 00 56 00 72 02 1D FD 6C FD 6C 01 26 01 26 94 E3")
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buffer_test2 = trans_str_to_list("01 06 00 60 00 00 89 D4 94 E3")
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modbus_map = {
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# 1 - Hex
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# 2 - Int16
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# 3 - lnt32
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# 4 - str
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# 5 - addr
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# 6 - float
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0x0C: ["告警字1", 1],
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0x0D: ["告警字2", 1],
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0x0E: ["故障字1", 1],
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0x0F: ["故障字2", 1],
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0x10: ["系统工作状态" , 1],
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0x11: ["Boost1工作状态" , 1],
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0x12: ["Boost2工作状态" , 1],
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0x13: ["开关机状态" , 1],
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0x14: ["光伏组串1输入电压" , 2],
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0x15: ["光伏组串2输入电压" , 2],
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0x16: ["Boost1电感电流" , 2],
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0x17: ["Boost2电感电流" , 2],
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0x18: ["Boost输出电压" , 2],
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0x19: ["Boost输出总电流" , 2],
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0x1A: ["Boost1功率" , 3],
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0x1C: ["Boost2功率" , 3],
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0x1E: ["输入总功率" , 3],
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0x20: ["LLC输出电压" , 2],
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0x21: ["端口输出电压" , 2],
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0x22: ["LLC输出电流均值" , 2],
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0x23: ["LLC输出电流峰值" , 2],
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0x24: ["绝缘检测电压" , 2],
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0x25: ["散热片温度" , 2],
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0x26: ["腔体1温度" , 2],
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0x27: ["腔体2温度" , 2],
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0x28: ["设备温度" , 2],
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0x50: ["启停控制命令" , 2],
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0x51: ["故障清除命令" , 2],
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0x52: ["参数还原命令" , 2],
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0x53: ["设备复位命令" , 2],
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0x60: ["整机运行使能", 1],
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0x61: ["最小启动允许输入电压", 2],
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0x62: ["最大启动允许输入电压", 2],
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0x63: ["最小停机输入电压", 2],
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0x64: ["最大停机输入电压", 2],
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0x65: ["最小启动允许输出电压", 2],
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0x66: ["最大启动允许输出电压", 2],
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0x67: ["最小停止允许输出电压", 2],
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0x68: ["最大停止允许输出电压", 2],
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0x69: ["最小MPPT电流限值", 2],
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0x6A: ["最大MPPT电流限值", 2],
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0x6B: ["保留数据项", 2],
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0x6C: ["最大功率限值", 3],
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0x6E: ["最大功率限值存储值", 3],
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0x70: ["Boost输入过压保护值", 2],
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0x71: ["Boost输出过压保护值", 2],
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0x72: ["LLC输出过压保护值", 2],
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0x73: ["LLC输出欠压保护值", 2],
|
|
0x74: ["Boost电感过流保护值", 2],
|
|
0x75: ["LLC输出电流均值保护值", 2],
|
|
0x76: ["LLC输出电流峰值保护值", 2],
|
|
0x77: ["保留数据项", 2],
|
|
0x78: ["过载保护值", 3],
|
|
0x7A: ["过温故障值", 2],
|
|
0x7B: ["过温告警值", 2],
|
|
0x7C: ["过温恢复值", 2],
|
|
0x7D: ["输出继电器故障判断差值", 2],
|
|
0x7E: ["保留数据项", 1],
|
|
0x7F: ["保留数据项", 1],
|
|
0x80: ["三点法中间阈值", 2],
|
|
0x81: ["浮充电压", 2],
|
|
0x82: ["恒压充电电压", 2],
|
|
0x83: ["llc软起开始电压", 2],
|
|
0x84: ["boost开始运行电压", 2],
|
|
0x85: ["boost停止运行电压", 2],
|
|
0x86: ["绝缘检测正阻抗限值", 3],
|
|
0x88: ["绝缘检测负阻抗限值", 3],
|
|
0x8A: ["保留地址项", 2],
|
|
0x8B: ["保留地址项", 2],
|
|
0x8C: ["保留地址项", 2],
|
|
0x8D: ["保留地址项", 2],
|
|
0x8E: ["保留地址项", 2],
|
|
0x8F: ["保留地址项", 2],
|
|
|
|
0x100: ["程序版本字符串", 4, 16],
|
|
0x110: ["设备型号字符串", 4, 16],
|
|
0x120: ["保留地址项", 4, 16],
|
|
0x130: ["生产厂家字符串", 4, 8],
|
|
0x138: ["保留地址项", 4, 8],
|
|
0x140: ["保留地址项", 4, 16],
|
|
0x150: ["保留地址项", 4, 16],
|
|
0x160: ["硬件版本字符串", 4, 16],
|
|
0x170: ["设备序列号", 4, 16],
|
|
0x180: ["设备MES码", 4, 16],
|
|
0x190: ["出厂日期批次", 4, 16],
|
|
}
|
|
block = {
|
|
'addr_dev' : 0x01,
|
|
'data_define': modbus_map,
|
|
}
|
|
check_frame_modbus(bytearray(buffer_test2), block)
|