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ifm
Device Manual Supplement: Acyclic data records and Command interface (AC14 and AC4S)
2017 / 09
Command channels
>
Standard CTT2 error codes
8931
The "standard CTT2 error code" provides information about errors occurred during processing of a
CTT2 command. It is transmitted in data byte 0 of the response channel of a CTT2 command. The
following table shows the possible values:
Error code
Description
0x00
No fault
0x01
Invalid index
0x02
Invalid length
0x03
Command not implemented
0x04
Used, the command could not be completed in the specified time
0x05
Command was not acknowledged
0x06
Invalid sub-index
0x07
Command 'Selective Read Request' is missing
>
CTT2 error object
18393
In addition to the standard CTT2 error code, the "CTT2 error object" provides further
manufacturer-specific information about errors which occurred during processing of a CTT2 command.
It is transmitted in the response channel of a CTT2 command in the data bytes 0...5. The CTT2 error
object has the following structure:
Data byte
Content
0
standard CTT2 error code
(
→
Standard CTT2 error codes
(
→ p.
1...4
manufacturer-specific error information
(
→ data sheet of the AS-i slave)