What is error 3 on channel specific errors?

[md1]

I get an intermittent channel specific error.(Channel specific error: dev, xxx, ch: xx, err:3) It is error 3? I cannot find anything explaining what error 3 is. Does any body know??

[Ames]

md1,

I am assuming you are using Lookout, but which version? Also which version of NI FieldPoint are you using and which controller?

Ames

[Aaron_G]

FieldPoint Modules report channel status using two bits. The four status values are: Good, Unconfigured, Channel Specific Error A, and Channel Specific Error B. Whereas all modules use Good and Unconfigured, only some modules will use Error A and/or Error B. For example, the [c]FP-DI-300 only uses Good and Uncofigured, whereas the [c]FP-AI-100 uses Good, Unconfigured, and Error A. For the [c]FP-AI-100, Error A is "Out of Range".

What module are you using? If it is not a module that supports all 4 errors, it may indicate that one of the pins is bent causing the Error 3. If it is a module that supports all of the error codes, I should be able to tell you what the error means.

Regards,
Aaron

[md1]

Aaron,

The field point module that I'm am using is FP-RLY-420.

Mark

[Aaron_G]

Mark,

The FP-RLY-420 module is one of the modules that only supports Good and Unconfigured. An intermittent report of error code 3 suggests to me that you have a pin making intermittent contact. I suggest that you check the pins between the FP-RLY-420 and the FP-TB-X terminal base.

Regards,
Aaron

[md1]

Aaron,
I am getting different channel specific errors. The errors are err6, this is a FP-AO-200, err4,FP-AI-110. These field point modules are on then same network module. Is it possible for the network module(FP-1001) to be causing these errors.

Mark

[md1]

Aaron,

Also I received other alarms,Message Garbled Bad CRC:20!G, and No response within timeout period:20!G, No Response within timetime out period:1F!G. ????

Mark

[Aaron_G]

Mark,

Based upon the additional information, it sounds like there is a substantial amount of noise and/or data corruption in the serial data. I would check the serial cabling. Things to look for is proper type of wires (shielded dual twisted pair with one pair used for Rx and one pair for Tx), proper cable routing (daisychain rather than star), and termination resistors (normally 120 Ohms between Rx+ and Rx- and a second between Tx+ and Tx- at the signal source (computer) and last FP-1001 (unit furthest along the daisy chain).

As for the error messages, the Message Garbled Bad CRC:20!G indicates that a Bad CRC (checksum) was received from module address 20 when sending the !G command to it. Likewise the No Respo
nse within timeout period indicates that the module at address 1, did not respond to the !G command within the specified timeout period (typically either 200 ms or 1000 ms for the defaults).

Regards,
Aaron