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3.2 > LINKS INSIDE THE MS102
The Master Station MS102 consists of:
• A Siemens PLC S7-300
• A Touch TP177B console connected to the PLC
• Bridging EWON integrating a Web server
• A TCP wrappers in the direction gateway to Moxa to add or remove data routing
To assure the redundancy of the system there are several links inside the Master Station MS102.
There is a redundent Modbus RTU links and a redundant Modbus TCP.
Actuator
Primary line
DCS
Modbus RTU
DCS
Modbus TCP
Ethernet
coupler
Touch console
Bridge
MPI/
Ethernet
Switch
MPI
PLC
24V supply
Bridge
DP
MPI
ETH
MPI
ETH
ETH
RS485
Profibus
coupler
DP
Actuator
Secondary line
Monitoring
PC
Bridge
ETH
RS485
DCS
Modbus RTU