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peteral / softplc

PLC simulation for load / stress testing of SCADA / MES systems
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modbus protocol #13

Open peteral opened 9 years ago

peteral commented 8 years ago

Port 502

Protocol:

Request

Field size example
Function code 1 byte 2
Offset 2 byte 0-65535
Count 2 byte ?

Response

Field size example
Function code 1 byte 2
Count 1 byte 0-255
Data N ?