Mitsubishi MELSEC LJ71C24, Руководство пользователя

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15 TROUBLESHOOTING
Protocol
Error code
(Hexa-
decimal)
Error
Description
Signal
name
Corrective action
MC
Non-
proce-
dural
Bi-
direc-
tional
Pre-
defined
7D10
H
Protocol
unregistered error
•
The protocol No. specified in control
data for the CPRTCL instruction is not
registered to the C24.
•
The CPRTCL instruction was executed
with no protocol setting data written.
CHn
ERR.
•
Check if the specified protocol No. is
correct.
•
Check the Protocol registration area
(buffer memory: 4091H to 4098H) to
see if the specified protocol No. is
registered.
•
Write the protocol setting data, and then
execute the CPRTCL instruction.
7D11
H
Protocol
simultaneous
execution error
•
The CPRTCL instruction and CH1
protocol execute request (Y3) or CH2
protocol execute request (YA) were
executed simultaneously in the same
channel.
CHn
ERR.
•
Correct the program not to execute the
CPRTCL instruction and CH1 protocol
execute request (Y3)/CH2 protocol
execute request (YA) simultaneously in
the same channel.
7D12
H
Transmission
monitoring timeout
error
•
Transmission monitoring time has timed
out.
Although the transmission was retried
the specified number of times, it did not
succeed.
CHn
ERR.
•
Check if the transmission is interrupted
due to some reason such as DTR
control.
•
Check if the CS signal is ON.
•
Check the cables for disconnection.
7D13
H
Receive wait
timeout error
•
Receive wait time has timed out.
CHn
ERR.
•
Check if the reception is interrupted due
to some reason such as DTR control.
•
Check the cables for disconnection.
•
Check the sending device for an error.
•
Using the circuit trace function
(communication data monitoring
function), check if:
1) Transmissions from the external
device are interrupted.
2) Any data are missing due to a
receive error.
3) An error exists in the data (packet)
sent from the other device.
7D14
H
Response
monitoring timeout
error
•
Response monitoring time (timer 1) has
timed out during transmission.
•
Data to be sent to the external device
were not acquired from the CPU
module within the Response monitoring
time (timer 1).
CHn
ERR.
•
Increase the Response monitoring time
(timer 1) value. (Default: 5 seconds)
•
If an error has occurred in the CPU
module, refer to the troubleshooting
section of the User's Manual (Hardware
Design, Maintenance and Inspection)
for the CPU module and take corrective
actions.
7D15
H
Response
monitoring timeout
error
•
Response monitoring time (timer 1) has
timed out during reception.
•
Data received from the external device
were not stored into the CPU module
within the Response monitoring time
(timer 1).
CHn
ERR.
•
Increase the Response monitoring time
(timer 1) value. (Default: 5 seconds)
•
If an error has occurred in the CPU
module, refer to the troubleshooting
section of the User's Manual (Hardware
Design, Maintenance and Inspection)
for the CPU module and take corrective
actions.
7D16
H
Protocol cancel
request error
•
A cancel request was accepted during
protocol execution, and the CPRTCL
instruction failed.
•
The CPRTCL instruction failed because
protocol setting data were written during
CPRTCL instruction execution.
CHn
ERR.
•
Check the cancelled Predefined
protocol in the CPRTCL instruction’s
control data (execution count result),
and eliminate the cause of the
cancellation.
•
If necessary, clear the error information
by error clear request (YE/YF).
•
To prevent coincidental execution of the
CPRTCL instruction, set the CPU
module to STOP before writing the
protocol setting data.
7D17
H
Packet size error
•
A packet of more than 2048 bytes was
received.
CHn
ERR.
•
Check the data length of the packet
sent from the device.
•
Divide the packet data into several parts
and send them separately.