Loopback Test - Mitsubishi Melsec-L Series User Manual

Appendix 4.2
This section describes the loopback test.
(1) Performing a test using a programming tool
This test is to check whether the initial process for each module has been completed. The test is executed on the
network of stations connected to the programming tool, and loopback test messages are sent sequentially to
*1
each E71 on the network and in the station number range specified for the loopback test request designation.
Programming
tool
The loopback test is executed
from the station No.1 through
the station No.5 on the network
No.1.
*1 Because the QJ71E71-100 of function version A and QnA/A series modules do not have a function for responding to this
request, the test results cannot be checked.
(a) Applications
The test can be executed only by specifying the network number for the test and target station number range.
For the E71-connected station subjected to the loopback test, do not specify the MELSOFT application transmission port
(UDP/IP) as a valid port for the password check. The loopback test cannot be executed.

Loopback test

(Stations connected
to the programming tool)
Station No.1 Station No.3
E71 E71
E71
Station No.2 Station No.4
Station No.5 Station No.7
E71 E71
E71 E71 E71
Station No.6 Station No.8
APPENDICES
Station No.9
E71
Network No.1
A
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