I must use a Quick Panel Control 15" for reading registry from a SR 489 digital relay (made by GE Multilin), but I have the folowing problem:
- the LED "Computer RS 485"- on the relay - lit inttermitent, but I can't read any registry from relay, using any Modbus functions permitted by QP;
I use the relay "Computer RS 485" port, and the communication settings (slave address, baud rate, stop bit ...) are the same for QP and relay.
I mention that QP Control reads registry from other devices connected to it.
How can I solve the problem?
- the LED "Computer RS 485"- on the relay - lit inttermitent, but I can't read any registry from relay, using any Modbus functions permitted by QP;
I use the relay "Computer RS 485" port, and the communication settings (slave address, baud rate, stop bit ...) are the same for QP and relay.
I mention that QP Control reads registry from other devices connected to it.
How can I solve the problem?