FMD1616-10 Online Monitoring

[M.Wysong]

I am having an issue with an FMD1616-10. I'm not sure why, but when I boot up the plc it will correctly show up the lights on the inputs, but the online monitoring will not correctly show the inputs.

To narrow down the problem I have tried several different things.

Upgraded to the newest software version and I am running the correct jre.

I checked to see if all grounds were connected.

Had the correct voltage on both power supplies.

Unplugged various things to make sure it wasn't something hooked up to the plc.

Loaded several different programs revisions.

Then I Loaded the same exact program to a F2424 on my bench setup and the problem was corrected. Then when I unplugged all connectors from the F2424 and replaced it with the FMD1616 and the problem was back.

This all leads me to a Problem with my FMD1616-10.
So what do I do next?

[M.Wysong]

Follow up.......

One thing I forgot to mention is that if you toggle the input that is messing up (3) it will start responding but doesn't seem to respond like it should. When i reset the plc, it is back to the same exact problem.

If I remove the connector for inputs 1-8 and move it to inputs 9-16, the online monitoring responds correctly. Then if I move it right back to 1-8 and reset the plc the problem continues.

[M.Wysong]

Might have found the issue. High speed inputs on the fmd1616 are different then the high speed inputs on a 2424.
I had channel 1 set up for high speed and on a 2424 this is input 1 and 2. On a 1616 channel one is 3 and 4.

[support]

Yes, the HSC input on F2424 and F1616 starts from input #1 to #6 whereas on the FMD1616-10 they are from input #1 to #4. Once defined as HSC inputs their logic status cannot be reliably read from the ladder logic. It is a hardware limitation.