Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 137)

Message Packet Formats
Chapter 5
5-58
Error Codes
Each command has a status (STS) byte in its reply format to indicate:
if the command was successfully completed (STS equals 00) or
if there was an error in the completion of the command (STS not equal
to 00).
The reply may also use an extended status byte (EXT STS) to define an
error if necessary. The following table lists additional status and extended
status codes and their meanings (the codes in the table are in
hexadecimal):
This
Status
Code: With This
Extended
Status Code:
Means:
01
F0
F0
F0
F0 None
0C
0D
0F
11 Destination Station Out of Buffer Space
Resource Is Not Available (Someone Has Upload Active)
Resource Is Already Available
No Privilege
Incorrect Type Date