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message_generator.py
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message_generator.py
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#!/usr/bin/env python3
"""Modbus Message Generator."""
import argparse
import codecs as c
import logging
import pymodbus.bit_read_message as modbus_bit
import pymodbus.bit_write_message as modbus_bit_write
import pymodbus.diag_message as modbus_diag
import pymodbus.file_message as modbus_file
import pymodbus.mei_message as modbus_mei
import pymodbus.other_message as modbus_other
import pymodbus.register_read_message as modbus_register
import pymodbus.register_write_message as modbus_register_write
from pymodbus.transaction import (
ModbusAsciiFramer,
ModbusBinaryFramer,
ModbusRtuFramer,
ModbusSocketFramer,
)
_logger = logging.getLogger(__file__)
# -------------------------------------------------------------------------- #
# enumerate all request/response messages
# -------------------------------------------------------------------------- #
messages = [
(
modbus_register.ReadHoldingRegistersRequest,
modbus_register.ReadHoldingRegistersResponse,
),
(modbus_bit.ReadDiscreteInputsRequest, modbus_bit.ReadDiscreteInputsResponse),
(
modbus_register.ReadInputRegistersRequest,
modbus_register.ReadInputRegistersResponse,
),
(modbus_bit.ReadCoilsRequest, modbus_bit.ReadCoilsResponse),
(
modbus_bit_write.WriteMultipleCoilsRequest,
modbus_bit_write.WriteMultipleCoilsResponse,
),
(
modbus_register_write.WriteMultipleRegistersRequest,
modbus_register_write.WriteMultipleRegistersResponse,
),
(
modbus_register_write.WriteSingleRegisterRequest,
modbus_register_write.WriteSingleRegisterResponse,
),
(modbus_bit_write.WriteSingleCoilRequest, modbus_bit_write.WriteSingleCoilResponse),
(
modbus_register.ReadWriteMultipleRegistersRequest,
modbus_register.ReadWriteMultipleRegistersResponse,
),
(modbus_other.ReadExceptionStatusRequest, modbus_other.ReadExceptionStatusResponse),
(modbus_other.GetCommEventCounterRequest, modbus_other.GetCommEventCounterResponse),
(modbus_other.GetCommEventLogRequest, modbus_other.GetCommEventLogResponse),
(modbus_other.ReportSlaveIdRequest, modbus_other.ReportSlaveIdResponse),
(modbus_file.ReadFileRecordRequest, modbus_file.ReadFileRecordResponse),
(modbus_file.WriteFileRecordRequest, modbus_file.WriteFileRecordResponse),
(
modbus_register_write.MaskWriteRegisterRequest,
modbus_register_write.MaskWriteRegisterResponse,
),
(modbus_file.ReadFifoQueueRequest, modbus_file.ReadFifoQueueResponse),
(modbus_mei.ReadDeviceInformationRequest, modbus_mei.ReadDeviceInformationResponse),
(modbus_diag.ReturnQueryDataRequest, modbus_diag.ReturnQueryDataResponse),
(
modbus_diag.RestartCommunicationsOptionRequest,
modbus_diag.RestartCommunicationsOptionResponse,
),
(
modbus_diag.ReturnDiagnosticRegisterRequest,
modbus_diag.ReturnDiagnosticRegisterResponse,
),
(
modbus_diag.ChangeAsciiInputDelimiterRequest,
modbus_diag.ChangeAsciiInputDelimiterResponse,
),
(modbus_diag.ForceListenOnlyModeRequest, modbus_diag.ForceListenOnlyModeResponse),
(modbus_diag.ClearCountersRequest, modbus_diag.ClearCountersResponse),
(
modbus_diag.ReturnBusMessageCountRequest,
modbus_diag.ReturnBusMessageCountResponse,
),
(
modbus_diag.ReturnBusCommunicationErrorCountRequest,
modbus_diag.ReturnBusCommunicationErrorCountResponse,
),
(
modbus_diag.ReturnBusExceptionErrorCountRequest,
modbus_diag.ReturnBusExceptionErrorCountResponse,
),
(
modbus_diag.ReturnSlaveMessageCountRequest,
modbus_diag.ReturnSlaveMessageCountResponse,
),
(
modbus_diag.ReturnSlaveNoResponseCountRequest,
modbus_diag.ReturnSlaveNoResponseCountResponse,
),
(modbus_diag.ReturnSlaveNAKCountRequest, modbus_diag.ReturnSlaveNAKCountResponse),
(modbus_diag.ReturnSlaveBusyCountRequest, modbus_diag.ReturnSlaveBusyCountResponse),
(
modbus_diag.ReturnSlaveBusCharacterOverrunCountRequest,
modbus_diag.ReturnSlaveBusCharacterOverrunCountResponse,
),
(
modbus_diag.ReturnIopOverrunCountRequest,
modbus_diag.ReturnIopOverrunCountResponse,
),
(modbus_diag.ClearOverrunCountRequest, modbus_diag.ClearOverrunCountResponse),
(modbus_diag.GetClearModbusPlusRequest, modbus_diag.GetClearModbusPlusResponse),
]
def get_commandline(cmdline=None):
"""Parse the command line options."""
parser = argparse.ArgumentParser()
parser.add_argument(
"--framer",
choices=["ascii", "binary", "rtu", "socket"],
help="set framer, default is rtu",
dest="framer",
default="rtu",
type=str,
)
parser.add_argument(
"-l",
"--log",
choices=["critical", "error", "warning", "info", "debug"],
help="set log level, default is info",
dest="log",
default="info",
type=str,
)
parser.add_argument(
"-a",
"--address",
help="address to use",
dest="address",
default=32,
type=int,
)
parser.add_argument(
"-c",
"--count",
help="count to use",
dest="count",
default=8,
type=int,
)
parser.add_argument(
"-v",
"--value",
help="value to use",
dest="value",
default=1,
type=int,
)
parser.add_argument(
"-t",
"--transaction",
help="transaction to use",
dest="transaction",
default=1,
type=int,
)
parser.add_argument(
"-s",
"--slave",
help="slave to use",
dest="slave",
default=1,
type=int,
)
args = parser.parse_args(cmdline)
return args
def generate_messages(cmdline=None):
"""Parse the command line options."""
args = get_commandline(cmdline=cmdline)
_logger.setLevel(args.log.upper())
arguments = {
"address": args.address,
"count": args.count,
"value": args.value,
"values": [args.value] * args.count,
"read_address": args.address,
"read_count": args.count,
"write_address": args.address,
"write_registers": [args.value] * args.count,
"transaction": args.transaction,
"slave": args.slave,
"protocol": 0x00,
}
framer = {
"ascii": ModbusAsciiFramer,
"binary": ModbusBinaryFramer,
"rtu": ModbusRtuFramer,
"socket": ModbusSocketFramer,
}[args.framer](None)
for entry in messages:
for inx in (0, 1):
message = entry[inx](**arguments)
raw_packet = framer.buildPacket(message)
packet = c.encode(raw_packet, "hex_codec").decode("utf-8")
print(f"{message.__class__.__name__:44} = {packet}")
print("")
if __name__ == "__main__":
generate_messages() # pragma: no cover