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Oliver Micka

SLC500->1747-AIC->PV800

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Hi all.
i need an a advice.
I use PV800 -T4T or T7T ( to a replace for an old PV550 ).
But I have a problem " create communication with PLC throught 1747-AIC.

I use DH485 protocol to comm ( PLC is SLC 5/04 and 5/03 ). 

If i connect the HMI to directly to PLC, everything is OK ( comm is good, data is sending/recieving ), but if i connect the HMI throught the 1747-AIC modules ( these module is neccessary for DH485 comm throught the line ), communications is lost.
All cables is original AB, only one cable i must connect directly ( wire -> pin on a connector , but this cable is correctly function if i directly connect to Dh485 port on a PLC without 1747-AIC ),
I would like " resolved" this problem, but i dont know how, I tried a several connections ( change pins to a connectors ) but nothing gonna happened. ( may i haven´t had "lucky" to find correct connections )
Did somebody tried resolve this problem ?

SLC 500 -> 1747-AIC -> 1747-AIC -> PV800

Edited by Oliver Micka

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