A
I am currently involved with setting up a MODBUS link between an ACM12 card (Yokogawa Centum CS DCS) and a number of Sprecher&Schuh CET4 Motor
Protection Relays. The field wiring for the job is complete and now we are having problems configuring so that communication works. The only
configurable parameters on the CET4 are Baud Rate & Station Number.
Also, Do we need a terminating resistor at the end of the chain? (We have a 120ohm resistor at the ACM12 card as per the Yokogawa manual - however do we need one at the other end?)
Any help would be greatly appreciated as it is important that we get this functionality working before plant startup (20th June).
Thanks in advance.
Andray.
Protection Relays. The field wiring for the job is complete and now we are having problems configuring so that communication works. The only
configurable parameters on the CET4 are Baud Rate & Station Number.
Also, Do we need a terminating resistor at the end of the chain? (We have a 120ohm resistor at the ACM12 card as per the Yokogawa manual - however do we need one at the other end?)
Any help would be greatly appreciated as it is important that we get this functionality working before plant startup (20th June).
Thanks in advance.
Andray.