datkins Posted September 17, 2013 Report Share Posted September 17, 2013 I have attempted to connect two TC's type J to the above I/O board Analog inputs 3 and 4. The hardware jumpers have been correctly placed according to the manual. With assigned MI's and the TC's connected, I have no change in the MI values as temp changes. AN3 shows a value of around 3750 (with TC connected or disconnected) AN4 shows a value of 32767 (with TC connected or disconnected). Any suggestions on what I am doing wrong? Quote Link to comment Share on other sites More sharing options...
MVP 2014 Simon Posted September 18, 2013 MVP 2014 Report Share Posted September 18, 2013 It sounds like you are setting up an initial test so forgive me if this question is too basic - have you downloaded the Visilogic project to the PLC (it is a common first-time error, when just testing I/O modules). The project containing the I/O configuration needs to be downloaded for the I/O module to function. Other than that, check everything again * jumper settings * configuration in Visilogic project - HW Configuration - input type set to TC type J * wiring for TCs is simple, but check again that you have the correct terminals, etc. Make sure the terminals are plugged all the way in. * check your TCs with a multimeter on mV setting. * with power off, remove the snap module and re-attach it, to make sure it is connected. 1 Quote Link to comment Share on other sites More sharing options...
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