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APPENDICES
A
Appendix 5 Line Status Check
Appendix 5.2 Loopback test
(2) Performing a test using the MC protocol
The loopback test can be also executed using MC protocol communications. Note, however, that only the E71 in
the own station can be used. The test cannot be executed on E71 modules in other stations over the network. For
details, refer to the following.
MELSEC Communication Protocol Reference Manual
(a) Execution method
Execute the test using the MC protocol dedicated command (Loopback test: 0619).
When the user port on the E71 side is used to perform MC protocol communications, the line connection process is
necessary. Execute the open process for the connection used for the E71 side.
(Loopback test command sending station)
E71
LCPU
E71
LCPU
E71
LCPU
Ethernet
(Loopback test target station)
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