Mitsubishi Electric Melsec A Series - Page 129

I
4. A2CCPU
MELSEC·A
4.10.3 Selecting test mode
This Section describes
the test modes used to check the link module
hardware and breakage of cables (coaxial cable,
fiber-optic cable).
The following five
test modes are available.
Switch Setting Test Mode Description
Checks the fiber-optic cables or
3 Forward
loop test mode coaxial cables in the data link
system forward loop.
Checks the fiber-optic cables or
4 Reverse loop test mode
coaxial cables in the data link
system reverse loop.
S
Station-to-station test Checks the lines between the two
(master station) stations. Set the station assigned
a lower station number as the
Station-to-station test
master station and the one
6
(slave station)
assigned a high station number
as the slave station.
Checks the hardware including
7 Self-Ioopback test
the send/receive circuits in the
transmission system; link module
is checked independently.
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