Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 130)

8–3 Message Packet Status Codes (STS, EXT STS)
Publication 1770Ć6.5.16 - October 1996
Remote STS Error Codes
The remote STS error code nibble contains errors found by the
remote node receiving the command. Error codes (in hex) that you
may find in the remote error code nibble of the STS byte include:
Code Explanation
00 SuccessĊno error
10 Illegal command or format
20 Host has a problem and will not communicate
30 Remote node host is missing, disconnected, or shut down
40 Host could not complete function due to hardware fault
50 Addressing problem or memory protect rungs
60 Function not allowed due to command protection selection
70 Processor is in Program mode
80 Compatibility mode file missing or communication zone problem
90 Remote node cannot buffer command
A0 Wait ACK (1775ĆKA buffer full)
B0 Remote node problem due to download
C0 Wait ACK (1775ĆKA buffer full)
D0 Not used
E0 Not used
F0 Error code in the EXT STS byte
You have an EXT STS byte if your STS code is F0 (hex).
Definitions for this byte vary, depending on the command code
(or type of command) in your message packet:
CMD code (hex) Type of code in EXT STS byte Refer to
00 to 08 No EXT STS byte not applicable
0F DH/DH+ codes page 8-4
0B, 1A, or 1B DH485 codes page 8-5
EXT STS Byte