Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 202)

General Asynchronous Link Error Codes
(STS, EXT STS)
Appendix C
CĆ2
Remote STS Error Codes
The remote STS error code nibble contains errors found by the remote
station receiving the command. The following table contains error codes
(in hex) that you may find in the remote error code nibble of the STS
byte.
This
Code
Means
0
1
2
3
4
5
6
7
8
9
A
B
C to E
F
Success Ċ No Error
Illegal Command or Format
Host Has a Problem and Will Not Communicate
Remote Station Is Not There, Disconnected, or Shut Down
Host Could Not Complete Function Due to Hardware Fault
Addressing Problem or Memory Protect Rungs
Function Disallowed Due to Command Protection Selection
Processor Is in Program Mode
Compatibility Mode File Missing or Communication Zone Problem
Remote Station Cannot Buffer Command
Not Used
Remote Station Problem Due to Download
Not Used
There Is an Error in the EXT STS Byte