How can i read/write the data from HMI ST6600 to PLC M580.

Bala029 · ‎2024-10-25

Hi, I am using the M580 CPU with the hotsatndby redundancy module. Then I have the HMI ST6600, Woodward Genset controller Easygen-2 devices. Now I want to get the genset controller data in both HMI and PLC. Actually I get the data from genest controller to HMI through ethernet communication, and I also get the data from plc to HMI. But the thing is, how can I read the data from HMI to PLC?. In that HMI i noticed Data sharing option is disabled, Then PLC variable section also R/W reference variable check box also disabled.

Bala029 · ‎2024-10-31

Thank you for your response. I have determined that Ethernet communication can be used to establish an alias between HMI and PLC variables. This function we can do transfer from HMI to PLC as well PLC to HMI.

See Answer In Context

YONGHO-KIM · ‎2024-10-27

The ST6600 and PLC M580 can send and receive data to and from Modbus TCP.

> HMI ST6000 - Modbus TCP Master (Client)
> PLC M580 - Modbus TCP Slave (Server)

> Communication setting part capture in HMI

If you have any additional questions, please let me know.

Bala029 · ‎2024-10-31

Thank you for your response. I have determined that Ethernet communication can be used to establish an alias between HMI and PLC variables. This function we can do transfer from HMI to PLC as well PLC to HMI.