spacehitchhiker42

MrPLC Member
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Everything posted by spacehitchhiker42

  1. Help with rx3i Modbus

    I'm trying to get an rx3i system with a IC695CMM002 card to talk to a Moxa Io-logik module over rs485 modbus. I can get my computer to talk to it over a usb adapter, but i can't get the PLC to talk to it. I've tried setting up the other port as a modbus slave, but I can't get my computer to talk to it either. I've checked my serial settings, and they all match. I've got the data exchanges all set up. I've tried swapping the polarity of my sr485 lines. I don't have any faults in the fault table. When I send a request from the computer to the PLC with qmodmaster, I see the status light on the port flash, but qmodmaster keeps timing out. I don't think it's getting any responses back from the PLC. Anybody else run into this kind of problem before? Are there any weird quirks i need to know about?
  2. i'm trying to interface a 1756-dnb to a couple devices. i've got the rsnetworx configuration complete and dowwnloaded to the device. when i go online in studio 5000, the scanner is faulted out. the code is "16#0108 connection request error: connection type (multicast/unicast) not supported". what could be going on here? i'm using an l72s cpu and a 1756-dnb/a on the local chassis
  3. networking micrologix 1200s

    yes haha PC is 0, master/PLC1 is 1, slave/plc2 is 2
  4. I don't have these plcs hooked up to any sort of process, i'm just trying to get them to talk to each other and to rslinx. I have 2 micrologix 1200s, each of which is connected the mini-din of a 1761-net-aic.  I have a third aic+ connected to  a USB to serial converter. all 3 of the AICs are wired together by rs485. i've tried configuring the plcs as df1 master and df1 slave with the PC running the slave driver, and also both plcs as df1 slave with the pc running the df1 master polling driver. they do not show up in rslinx. am i trying to use the wrong driver, or could the AIC be messed up? is there any way to test the AIC?
  5. networking micrologix 1200s

    no. i tried dh485 first and they lit up a lot but then i found out that the pic/aic driver doesn't work on win7. is the df1 slave driver supposed to be for this kind of thing? it would be good to have one of the plcs as master so that we don't always need to have a computer hooked up