Dear all,
I have two analyzers communicating with Kepware OPC through MODBUS serial communication protocol over RS485. i am going to upgrade the HMI and i want to change the communication physical media to be over ethernet.
Existing physical communication is : RS485, two wires connected to female 9 pin port, pin 2 "RX" and pin 4 "Data terminal ready"
upgradation component and the existing situation:
1- using PHOENIX FL COM server RS232/422/485, i convert the physical layer from RS-485 to ethernet.
2- in the PC i use PHOENIX redirector software to create virtual serial com with the same setting of the hardware com that was in using before.
3- through the Kepware OPC i change the communication com to the one we are using.
Observation: communication done and the connection statues is Good, the analyzers are connected successfully to kepsware OPC but the problem that all data coming BAD quality. OPC cannot decode the data.
any one have suggestions what the problem may be or how can i solve the problem.....
thank you in advance
I have two analyzers communicating with Kepware OPC through MODBUS serial communication protocol over RS485. i am going to upgrade the HMI and i want to change the communication physical media to be over ethernet.
Existing physical communication is : RS485, two wires connected to female 9 pin port, pin 2 "RX" and pin 4 "Data terminal ready"
upgradation component and the existing situation:
1- using PHOENIX FL COM server RS232/422/485, i convert the physical layer from RS-485 to ethernet.
2- in the PC i use PHOENIX redirector software to create virtual serial com with the same setting of the hardware com that was in using before.
3- through the Kepware OPC i change the communication com to the one we are using.
Observation: communication done and the connection statues is Good, the analyzers are connected successfully to kepsware OPC but the problem that all data coming BAD quality. OPC cannot decode the data.
any one have suggestions what the problem may be or how can i solve the problem.....
thank you in advance