Pilz PSSnet GW1 MOD­-CAN Operating Manual page 19

Function description
4.1.1 Block diagram
Fig.: Block diagram
4.2 Modbus/TCP
The Gateway can manage a max. of 8 Modbus/TCP connections. The Gateway is always
the connection Server. The connection Clients may be various devices, e.g. PC, control
system, display unit. They can access the Gateway simultaneously.
Port number "502" in the Gateway is set as the default for data exchange via a Modbus/
TCP connection.
4.2.1 Modbus/TCP data ranges (Server connections)
The product supports the following Modbus/TCP data areas:
Data area
Coils (Bit)
0x00000 ... 0x65535
[read/write]
Discrete Inputs (Bit)
1x00000 ... 1x65535
[read only]
Input Register (Wort/16 Bits)
3x00000 ... 3x65535
[read only]
Holding Register (Wort/16
Bits)
4x00000 ... 4x65535
[read/write]
Modbus/TCP data areas
Operating Manual PSSnet GW1 MOD­CAN
1002693­EN­03
1x CANopen
24 V
0 V
Power
Mapping
Modbus syntax
0x[xxxxx]
1x[xxxxx]
3x[xxxxx]
4x[xxxxx]
Connection to
Modbus/TCP
Example
0x00031
1x08193
3x00002
4x00805
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