Modbus Tcp To Modbus Rtu Gateway - Siemens SICAM Q100 System Manual

Communication

2.4 Modbus TCP to Modbus RTU Gateway

2.4 Modbus TCP to Modbus RTU Gateway
Schematic Overview of Modbus TCP to Modbus RTU Gateway
---------------------------------------------------------------------------------------------
Measured values MV x Slv 1 from Modbus slave device 1 of Q100 1
Measured values MV x Slv 2 from Modbus slave device 2 of Q100 1
Measured values MV x Slv 1 from Modbus slave device 1 of Q100 2
Measured values MV x Slv 2 from Modbus slave device 2 of Q100 2
...
...
(x = 1 to 15)
Indications Indication y Slv 1 from Modbus slave device 1 of Q100 1
Indications Indication y Slv 2 from Modbus slave device 2 of Q100 1
Indications Indication y Slv 1 from Modbus slave device 1 of Q100 2
Indications Indication y Slv 2 from Modbus slave device 2 of Q100 2
...
...
(y = 1 to 6)
Figure 2-10
92
Device type: SCADA
Device name: SCADA PCx
Data object image
Ethernet
Modbus TCP
Ethernet
Switch
Device type: SICAM Q100
Device name: Q100 1
Gateway
RS485:
Modbus Master
Modbus RTU
Modbus Slave
Modbus Slave
Functioning of Modbus TCP to Modbus RTU Gateway
Ethernet connection
to further device
combinations of the
same type
Q100 2
RS485:
RS485:
Q100 x
SICAM Q100, 7KG95xx, System Manual
E50417-C1040-C522-A8, Edition 09.2020