Oliver Micka
Member
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 muse 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
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 muse 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