RSLogix comm with dh485

[keving9]

I'm trying to communicate on a dh485 network with about 10 nodes on it. I'm using a laptop with RSLogix and a pic. I can communicate with indiviual plcs by plugging into the plc's dh485 port, but when I try to use who active on the network while plugged into a link coupler, it can't find anything other than the workstation and pic. I can plug my old laptop running the old AI software and communicate fine.
Any help?
Thanks.

 

[SNK]

What version RSlinx are you using, and on what OS?

 

[keving9]

What version RSlinx are you using, and on what OS?

RSLogix Ver.7.10 on Windows XP Pro
RSLinx Ver 2.50.00.20

 

[kolyur]

Your problem may be that you're trying to use the PIC module with WinXP. We've had a lot of problems with the PIC device on newer laptops and have switched to the 1747-UIC (uses USB port instead of serial).

 

[keving9]

Could be, but the pic and winxp work when connected directly to the plc?

 

[Operaghost]

It sounds like a node number conflict. Make sure that the PIC is configured in RSLinx to use an address nothing else is using. Also, make sure the Max Station # is set to 31 (at least for now).

If all that is on your network are SLCs then Node 0 should be available but if you have other PCs or operator interfaces then 0 may be in use.


OG