Mitsubishi Electric MELSEC Q Series User Manual page 125

5
PRE-OPERATION PROCEDURES
PING test
request flag
(2) When PING test is not available
Has an error occurred in the CPU module?
Is the CPU module switch set to RUN?
Is the intelligent function module switch setting left blank (No
setting)?
Are the cables connected properly?
Are the connected devices and switching hubs on?
Or, any error in them?
Is the value stored in the Execution result (Un\G27908) C400
(When executing from a sequence program)
Is the failure count other than 0?
(b) From a sequence program
The following is a program example in which a PING test is executed in a
sequence program.
In the example, a PING test is executed for IP address 192.168.0.2 when the start
I/O No. of the EtherNet/IP module is set to "0000".
Error handling
Figure 5.23 Program example of a PING test
Check the following and execute the PING test again.
Table 5.12 When PING test is not available
Item
H
Communication time check: 5 seconds
Transmission count: 5 times
IP address: 192.168.0.2
Set PING test execution request to ON.
Read PING test result.
PING test error handling
Set PING test execution request to OFF.
Set PING test request flag to OFF.
Corrective action
Correct the error of the CPU module.
( the manual for the CPU module used)
Set the CPU module switch to RUN.
Delete the settings of the intelligent function module switch setting.
( Section 5.5.2 Switch setting for the intelligent function
module)
Connect the cables properly. (
Power on the connected devices and switching hubs.
If an error is identified, check the error detail and take corrective
actions.
? Correct the IP address (Un\G27906 to Un\G27907) of the
connected device.
•Correct the IP address (Un\G27906 to Un\G27907) of the
connected device.
•Check for noise. ( Section 5.7.1 Wiring precautions)
•Utility Package: on the "Ping Test" window
•Sequence program: the value stored in Un\G27911
Section 5.7 Wiring)
5
5.8 PING Test
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