ProSoft Technology MVI56-LTQ - Manual (Page 41)

MVI56-LTQ ♦ ControlLogix Platform Diagnostics and Troubleshooting
Limitorque Valve Actuator Master Communication Module User Manual
ProSoft Technology, Inc. Page 41 of 98
August 30, 2010
4.1.3 Communication Error Codes
The Error Codes returned from the module represent the outcome of the
commands and responses executed by the module. This data value is returned
for each slave at word offset 6. Note that in all cases, if a zero is returned, there
is no current error. Valid Error Status Codes are as follows:
Note: These error codes are used for communication module diagnostics. For programming
purposes, use the Slave Data Table (Slave #x Response Data Word 1 bits 7, 10, and 11) for
determining slave communication status.
Code Name Description
0 All ok The module is operating as desired or is currently being
polled or commanded.
1 Illegal Function An illegal function code request is being attempted.
2 Bad Data Address The address or range of addresses, covered by a request
from the master are not within allowed limits.
3 Bad Data Value The value in the data field of the command is not allowed.
6 Module Busy The module busy status code is returned when a write
command from the master has not yet been completed
when a second write command is received.
-1 CTS Line Error The module is monitoring the CTS line and it was not
asserted after the RTS line was asserted. The message
was not transmitted on the port.
-2 Send Timeout The message was not completely transmitted on the port
within the 5-second message send timeout period.
-3 No Message The command selected did not produce a message (Bad
command format or illegal instruction).
-10 Long Message The message received on the port is too long.
-11 Response Timeout Timeout condition while waiting for response message.
253 Wrong Slave The response message received on the port is not that in
the request message.
254 Wrong Function Code The function code in the response message does not
match that in the last request message.
255 CRC Error The CRC value returned in the message does not match
the computed CRC of the packet.