PLC 2

[elarsen50 0]

Greetings to all, Please dont laugh, but I am still living in the PLC 2 world. I have 6 of them alive and well for the most part. My question is this...Using my laptop I can communicate, upload and download with 4 of them, two of the PLC's tell me I have a fault with the cable and I cant do anything with them. I have a T3 terminal which allows me to connect to all six of them. I am using ICOM ver 6.2 with WIN 98 thru a PCMK card. I dont have the manual for the software and the PLC2 books I do have dont even mention a computer as an option to communicate. Old, eh? I searched for the manual on the Rockwell site, but came up empty. I may have missed it or it doesnt exist. Any help would be greatly appreciated. I know, I know, upgrade ASAP, right? But as usual the money guys say "we aint got no money". Thanks in advance Ed

[Omronix 0]

Hello Elarsen.... Your problem seems to like my problem with 1747-PIC... New genaration PC and notebooks has powersaver features... Ths is preventing/decreasing the voltage on COM ore PCMA.. Trerefore you are unable to make a connection.. On the other hand, PCMA..etc type ports are NOT usable.. You have to use phhsiclalCOM ports.... Actulay, I am not expert for this kind of problems.. My problem also not solvet ( LINK LAYER NOT ACTIVE) As a recommed... I am planning to find an older desktop computer from 1994-1998's with Win95 in order to create proper connection. You can also do same solution; If someones doesn't help us for easier way.. Good luck !!!

[jstolaruk 9]

Wait till one of those PLC2s dies and management sees the replacement price and the time lost if you can't communicate it LOL. Reality will then set in!

[hakko808 0]

Assuming you are using the same laptop, cable, and software and 4 of the 6 work, the problem would seem to be something different in the two that are not communicating. I would suspect some variation in the com settings. Since you can connect to all 6 with the T3 perhaps you can tell what is different by poking around the com settings.

[gravitar 3]

Can you even change the port parameters for the front panel communication channel? I have very little experience with PLC-2s but I don't ever remember having to set a baud rate, parity, etc.

[bjclem 0]

the 2 processors that you cannot talk to are mini plc"s 2 please give my the Number of the 2 you cannot talk to . i have had this problem but with only the plc2/15 please let me know