6.2 Modbus TCP/IP
The MonitEM-Lab can be used with a PLC system by activating the TCP/IP
Modbus protocol. To do so, please activate by clicking on Options TCP/IP
Modbus menu.
To use with a PLC, please use the following conguration:
• Port: 10001
• Slave ID: 17
• Function code: 3
Registers to read the EMF eld in V/m:
• Address: 50512 (Hex: 0xC550)
• Length: 2 (the EMF eld value is sent with 2 registers of 16 bits = 32 bits)
Note: the MonitEM-Lab does not comply fully the TCP/IP modbus protocol but has
been tested with several system like Siemens under real condition.
User’s Manual
Electromagnetic Radiation Monitoring Device MonitEM-Lab P. 17
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