Mitsubishi QJ71MB91 User Manual page 334

11
TROUBLESHOOTING
Exception
Error name
code
05
H
Acknowledge
(5)
06 Slave Device
H
(6) Busy
07
H
NAK Error
(7)
08 Memory Parity
H
(8) Error
0A Gateway Path
H
Unavailable
(10)
Gateway Target
0B
H
Device Failed To
(11)
Respond
11
- 29 11.4 Error Codes
11.4.2 Exception code list
Table11.15 Exception code list (Continued)
Description
As the slave is executing another
processing, a long duration of time
is required to complete the
requested processing.
As the slave is executing another
processing, the requested
processing cannot be executed.
The requested program function
cannot be executed on a slave.
A parity error was detected on a
slave during access to the
extension file register.
The gateway device
(MODBUS /TCP
MODBUS protocol) is not
available for use.
There is no response from the
slave devices connected ahead of
the gateway device.
(c) Error code issued when processing on the slave (QJ71MB91) was completed in
error
If processing on the slave (QJ71MB91) was completed in error, an exception code
is stored in the buffer memory. On the QJ71MB91, an error code is also stored in
the buffer memory to identify the detailed cause. (
The error code can be checked by the Error log (address: 0CFE
buffer memory.(
Target device (Master side)
Not issued by the slave function of the QJ71MB91.
Section 11.4.1 (8))
Corrective action
QJ71MB91 (Slave side)
Section 11.4.3)
to 0DFF
H
) in the
H