Mitsubishi Melsec-L Series User Manual page 291

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