Rockwell Automation 1747-PCINT API Software for 1746 I/O - Manual (Page 147)

Publication 1747-6.5.3 June 1998
Appendix
A
Error Codes
Introduction This appendix describes the error code data.
Error Code
Returned by API
Functions
Most of the API functions return values (see chapter 6). These are the values
returned by the API functions to indicate success or possible error conditions
(but not all are returned by each function):
Name: Return Value: Description:
SUCCESS
0 function returned successfully
ERR_OCACCESS
2 handle does not have access to scanner
ERR_OCEXTERR
11 scanner responded with an extended error message
ERR_OCFAULT
13 request denied because scanner faulted
ERR_OCFILERROR
19
error occurred while reading/writing disk file
ERR_OCINIT
5 scanner has not been initialized
ERR_OCIOCFG
9
I/O configuration is invalid
ERR_OCMEM
3 shared memory cannot be found
ERR_OCNOFORCES
15
no forces installed, cannot enable forces
ERR_OCOPEN
1 scanner already open
ERR_OCOUTOFMEM
17
memory allocate failed
ERR_OCOVERRUN
16 DII, I/O initialization, or error report message overrun
ERR_OCPAR
6
initialization failed due to invalid partition information
ERR_OCPARAM
8 parameter contains invalid value
ERR_OCPOST
7 scanner POST failure
ERR_OCREINIT
4 scanner has already been initialized
ERR_OCRESPONSE
10 scanner did not respond to request successfully
ERR_OCSCANCFG
14
scanner I/O configuration not downloaded
ERR_OCSLOT
12 slot number is invalid
ERR_OCUNKNOWN
18
unknown module type
ERR_OCNOTSUPP
20 function not supported on this platform