Protiusmime
Member
Can anyone tell me if any series of a 1771-IFE card higher than Series A can accept different inputs e.g. channels 1-8 single-ended and channels 9-16 differential?
IF this is not allowable, then I have a question following a bit of system info for your perusal:
We currently have a PLC5/40 with a remote rack which has an in-use 1771-IFE. Only the first 8 channels are being utilized. All 16 channels have been configured for single-ended 4-20mA inputs with corresponding BTW/BTR data files. The 8 existing field devices are provided looped power from a 24vdc source in the PLC cabinet and the returns of course are terminated on channels 1-8 of our IFE.
Now...I need to add two more field devices which happen to be also 4-20 outputs, however, these two are self-sourced e.g. the positive/negative leads are available to terminate at the PLC analog input.
And the question: Can anyone say what would be the best way to connect these two inputs to channels 9 and 10 on the IFE?
Your help and time is very much appreciated.
IF this is not allowable, then I have a question following a bit of system info for your perusal:
We currently have a PLC5/40 with a remote rack which has an in-use 1771-IFE. Only the first 8 channels are being utilized. All 16 channels have been configured for single-ended 4-20mA inputs with corresponding BTW/BTR data files. The 8 existing field devices are provided looped power from a 24vdc source in the PLC cabinet and the returns of course are terminated on channels 1-8 of our IFE.
Now...I need to add two more field devices which happen to be also 4-20 outputs, however, these two are self-sourced e.g. the positive/negative leads are available to terminate at the PLC analog input.
And the question: Can anyone say what would be the best way to connect these two inputs to channels 9 and 10 on the IFE?
Your help and time is very much appreciated.