Mitsubishi Electric MELSEC iQ-F Series - Troubleshooting by Symptom

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10 TROUBLESHOOTING
10.3 Checking the Network Status
Communication test
This function checks if transient transmission data can be properly routed from the own station to the communication target.
Depending on selection for "Communication Method" ("Network No./Station No." or "IP Address"), the range that can be
checked may vary.
The following explains the procedure for a communication test.
Precautions
• When a relay sending station is set to "Target Station", the communication test ends with an error. Set a relay receiving
station to "Target Station".
• When "Network No./Station No." is selected for "Communication Method" and a station mounted on the same system
(module connected with a connector or cable) is set for "Target Station", the communication test ends with an error.
• This test cannot check whether transient transmission can be performed from the connected station (own station) to a
station on another network by specifying an IP address.
• Since this function uses PING, a communication test target station communication error (error code D919H) occurs if the
communication target does not respond to PING. When executing this function, check if the security setting (such as
firewall) of the communication target is set to respond to PING. Moreover, if the target is set not to respond to PING in the
security settings (such as a firewall), it may take some time until a timeout error occurs on the engineering tool. For details
on when communication of the engineering tool is not allowed in the firewall settings of Windows, refer to the following.
 GX Works3 Operating Manual
Selection of "Communication
Method"
Communication target of transient transmission
Stations on the same network Stations on the other network
Network No./Station No.  Available for check  Not available for check
IP Address  Available for check  Not available for check
1. Display the "Communication Test" window and select
"Network No./Station No." or "IP Address" from
"Communication Method".
[Diagnostics]  [CC-Link IE TSN/CC-Link IE Field
Diagnostics]  [Communication Test] button
2. Enter values for "Target Station" and "Communication
Data Setting".
3. Click the [Execute Test] button to execute the
communication test. If an error occurs, take corrective
actions according to the error message.
Own station
(request source)
Station
No.0
Station
No.1
Station
No.2
Relay
receiving
station
Relay
sending
station
Station
No.0
Network No.1
Network No.2