Mitsubishi Melsec-L Series User Manual page 274

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(g) ACK.
Indicates "Normal completion status".
Value Status
0001(ON) Normal
completion
transmission
0000(OFF) Abnormal
completion
transmission
(h) NEU.
Indicates "Neutral status".
NEU. is valid when a communication protocol on CH
MC protocol.
When the communication protocol is set to other than the MC protocol, the
status of NEU. is off.
Value Status
0001(ON) Neutral
0000(OFF) Command
reception
(i) CH2 ERR.
Indicates "Error occurrence status on CH2 side".
Value
0001(ON) • Switch setting error
• Mode switching error
• Transmission error
• Reception error
• On-demand error
• Flash ROM write error
• Flash ROM write count over
limit error
0000(OFF) Normal
(j) CH1 ERR.
Indicates "Error occurrence status on CH1 side".
Value
0001(ON) • Switch setting error
• Mode switching error
• Transmission error
• Reception error
• On-demand error
• Flash ROM write error
• Flash ROM write count over
limit error
0000(OFF) Normal
When the C24 could receive data normally, the C24
sent a response message (ACK message) to the
external device to notice the normal completion.
When the C24 could not receive data normally, the
C24 sent a response message (NAK message) to the
external device to notice the abnormal completion.
Waiting for command message to be received.
Command message being received.
Status
The errors in the left column occurred
on the CH2 side.
Keeps its on-status even after the
communication returns to normal.
Initialize the error information as
necessary.
For details, refer to Section 15.1.2.
Status
The errors in the left column occurred
on the CH1 side.
Keeps its on-status even after the
communication returns to normal.
Initialize the error information as
necessary.
For details, refer to Section 15.1.2.
15 TROUBLESHOOTING
Description
side is set to use the
Description
Description
-
Description
-
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