Hello all. I would appreciate your help in troubleshooting an AB multi-drop DH485 network.
Our company was retained to modify existing machinery. The network issue became apparent when we attempted to connect our PC into an existing PLC/HMI DH485
network by adding a 1761-NET-AIC Ser. B. One machine was successfully connected; two were not able to be connected or appear in RSLinx.
Machine 1 (worked):
SLC 5/04 1747-L541 Ser. B FRN 3 OS 401; Chan. 0 configured for DH485, 19200, Node 1. 1761-CBL-PM02 connecting from SLC to AIC+ Mini-DIN RS232 port
PV550 2711-B5A5 FRN 4.10; 19200, Node 2. Serial cable connecting from PV to AIC+ DE9 RS232 port
Laptop running RSLinx 2.57, using 1747-UIC; 1761-CBL-AS03 connecting from UIC to AIC+ RS485 port; AB_UIC driver, Node 0
AIC+ externally powered
PC was able to go online with SLC and download to PV.
Machine 2 (failed):
SLC 5/04 1747-L541 Ser. B FRN 3 OS 401; Chan. 0 configured for DH485, 19200, Node 1. 1761-CBL-PM02 connecting from SLC to AIC+ Mini-DIN RS232 port
PV550 2711-B5A5 FRN 2.00; 19200, Node 2. Serial cable connecting from PV to AIC+ DE9 RS232 port
Laptop running RSLinx 2.57, using 1747-UIC; 1761-CBL-AS03 connecting from UIC to AIC+ RS485 port; AB_UIC driver, Node 0
AIC+ externally powered
No nodes found active in RSLinx.
Machine 3 (failed):
SLC 5/04 1747-L541 Ser. B FRN 3 OS 401; Chan. 0 configured for DH485, 19200, Node 1. 1761-CBL-PM02 connecting from SLC to AIC+ Mini-DIN RS232 port
PV550 2711-B5A9 FRN 3.10; 19200, Node 2. Serial cable connecting from PV to AIC+ DE9 RS232 port
Laptop running RSLinx 2.57, using 1747-UIC; 1761-CBL-AS03 connecting from UIC to AIC+ RS485 port; AB_UIC driver, Node 0
AIC+ externally powered
No nodes found active in RSLinx.
Is the PV firmware version to blame here? Any thoughts or suggestions?
Best regards,
gnieport
Our company was retained to modify existing machinery. The network issue became apparent when we attempted to connect our PC into an existing PLC/HMI DH485
network by adding a 1761-NET-AIC Ser. B. One machine was successfully connected; two were not able to be connected or appear in RSLinx.
Machine 1 (worked):
SLC 5/04 1747-L541 Ser. B FRN 3 OS 401; Chan. 0 configured for DH485, 19200, Node 1. 1761-CBL-PM02 connecting from SLC to AIC+ Mini-DIN RS232 port
PV550 2711-B5A5 FRN 4.10; 19200, Node 2. Serial cable connecting from PV to AIC+ DE9 RS232 port
Laptop running RSLinx 2.57, using 1747-UIC; 1761-CBL-AS03 connecting from UIC to AIC+ RS485 port; AB_UIC driver, Node 0
AIC+ externally powered
PC was able to go online with SLC and download to PV.
Machine 2 (failed):
SLC 5/04 1747-L541 Ser. B FRN 3 OS 401; Chan. 0 configured for DH485, 19200, Node 1. 1761-CBL-PM02 connecting from SLC to AIC+ Mini-DIN RS232 port
PV550 2711-B5A5 FRN 2.00; 19200, Node 2. Serial cable connecting from PV to AIC+ DE9 RS232 port
Laptop running RSLinx 2.57, using 1747-UIC; 1761-CBL-AS03 connecting from UIC to AIC+ RS485 port; AB_UIC driver, Node 0
AIC+ externally powered
No nodes found active in RSLinx.
Machine 3 (failed):
SLC 5/04 1747-L541 Ser. B FRN 3 OS 401; Chan. 0 configured for DH485, 19200, Node 1. 1761-CBL-PM02 connecting from SLC to AIC+ Mini-DIN RS232 port
PV550 2711-B5A9 FRN 3.10; 19200, Node 2. Serial cable connecting from PV to AIC+ DE9 RS232 port
Laptop running RSLinx 2.57, using 1747-UIC; 1761-CBL-AS03 connecting from UIC to AIC+ RS485 port; AB_UIC driver, Node 0
AIC+ externally powered
No nodes found active in RSLinx.
Is the PV firmware version to blame here? Any thoughts or suggestions?
Best regards,
gnieport