BrockSamson
Member
I need some help.
I have a 1769-IF4 analog card that is hooked up to strain gages, the gages give a 4-20ma signal to the card.
We had an outside guy do the programming. At the time he set it up only one strain gage was wired into one channel on the card. Everything worked like it was suppose to.
Later, I hooked up another strain gage to another channel. Now the analog card is not reading any signal. In rslogix the tag for the channel displays 0 and does not change, it should show values corresponding to the changed 4-20ma signal.
I checked with a multimeter, the card is getting a good signal.
I tripled checked that everything is wired up correctly, Its wired single-ended.
The status light on the card module is green.
I am not getting any errors/faults/status bits in rslogixs.
I have no idea why it is not working now.
Thanks
Edit: I will also mention that in the program you can select between all four channels with buttons on the hmi and it only activates one channel at a time. I confirmed this works as it is suppose to and no matter what channel is selected, it still does not work.
I have a 1769-IF4 analog card that is hooked up to strain gages, the gages give a 4-20ma signal to the card.
We had an outside guy do the programming. At the time he set it up only one strain gage was wired into one channel on the card. Everything worked like it was suppose to.
Later, I hooked up another strain gage to another channel. Now the analog card is not reading any signal. In rslogix the tag for the channel displays 0 and does not change, it should show values corresponding to the changed 4-20ma signal.
I checked with a multimeter, the card is getting a good signal.
I tripled checked that everything is wired up correctly, Its wired single-ended.
The status light on the card module is green.
I am not getting any errors/faults/status bits in rslogixs.
I have no idea why it is not working now.
Thanks
Edit: I will also mention that in the program you can select between all four channels with buttons on the hmi and it only activates one channel at a time. I confirmed this works as it is suppose to and no matter what channel is selected, it still does not work.
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