Allen-Bradely PLC Issue 1

[HiSaurabh]

I am working on a AB SLC-5/05 PLC from last few weeks. It also has a remote module - RTD -1794-IRT8 connected to it through DeviceNet. In this RTD Module, I always see the last two bits: IN6 and IN7 with Red Flashing "F" LEDs. All the bits have been used to connect to Temperature sensors. There is no flashing on the other bits: IN0 to IN5. However I don't see any fault/error becuase of these Red flashing "F" LEDs. And my operations works well.

Is this normal?
Am I missing something which I have no idea about?

Please help..if you know this. I have never worked on AB PlC before so do not have much understanding on this.



Thanks,
Saurabh

 

[redlinej]

This is normal for RTD card when no sensor is connected to that input .when you use the input and u have a broken sensor you can use the fault LED to find which sensor is broken.

 

[HiSaurabh]

@redlinej : Thanks Man! You are correct, my system uses 6 No.s of Temperature Sensor and the given RTD Module has space for 8 Temperature Sensors. And because of this my input numbers IN6 and IN7 are shoing Flashing 'F" LEDs. Thanks a lot!!!