lost_in_space

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About lost_in_space

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    Hi, I am New!

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  • Country Australia
  1. ControlLogix and ControlNet unable to restart afer a fault

    Thanks, that makes sense, now I can sleep at night......
  2. Hi,  We have 2 x 1756-L71 Processors joined together with a pair of 1756-RM2/A redundancy modules. The rack also has 1756-EN2T and 1756-CN2R modules.    I was called to the site after a power outage and found that the link between the 2 CPUs had failed with one displaying no program and the link modules with error lights. The ControlNet cards also had red lights on both channels and all of the FlexIO devices were red Xed in RSLinx. I went down the path of trying to get the CPUs up, and running but this was a red herring as I was informed that if the CPU's get out of Sync and have any faults on the cards the secondary one will lose its project. The ControlNet cards were giving a no Active Keeper fault? So we went down the path of the ControlNet cards, I initially thought that it was that the cards had lost their configuration files but we isolated the coax network to just the 2 cards, and the CP's and ControlNet cards came back up online. We joined the network back onto the ControlNet cards and found a faulty 1794-ACNR15/CFlexIO module. Once we replaced this the other devices (48 devices on the network) were not being discovered on the network. We went around and power cycled the IO units and then they started to Auto discover and the site came back up - Note CPUs were in Program mode at the time and I flicked them to Run and the site came back online. Does anyone have any information on why they needed to be power cycled and is there likely to be an underlying issue other than the single failed module pulling the network down?
  3. 1747-UIC DB9 Pinout colours

    I'll email them and post back on here for future people.
  4. 1747-UIC DB9 Pinout colours

    I have been given a 1747-UIC to use..... someone has managed to snap the DB9 connector off of the soldered connections in the DB9 Plug. I have tried to deconstruct the plug but the cores had been pulled back too far and no longer showed where they connected to the plug. I have 5 wires red, brown, blue, violet, yellow, and a screen ? Does anyone know how I should connect them up to a DB9 plug