Seneca Z-PASS1, Руководство пользователя

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USER MANUAL – Z-PASS1/Z-PASS2
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In this case, one serial port (e.g. COM1) is configured as Modbus Slave and another (e.g. COM2) is
configured as Modbus Master.
When some measures acquired from the Modbus Slaves must be available for a PLC, which supports only
Modbus Master protocol, and also for a SCADA/Datalogger, the Z-PASS can be configured with one serial
port defined as Modbus Slave (connected to the PLC) and another in Modbus Master (connected to the
Modbus Slaves bus).
The PLC Modbus RTU Master and the Modbus TCP client(s) write/read the Z-PASS shared memory registers,
while the Z-PASS Modbus Gateway keeps the shared memory aligned with the Modbus Slaves registers.