50
(17) Mode select switch
By switching mode, the following functions are available:
Setting
Number
Name Description
0 Online
Automatic return is set during normal
operation.
1 Online
Automatic return is not set during normal
operation.
2
Online
The host station is disconnected.
3
Forward loop
test mode
Used to perform a line check on the optical
fiber cables or coaxial cables in the forward
loop (for normal data link) throughout the
entire data link system.
4
Reverse loop
test mode
Used to perform a line check on the optical
fiber cables or coaxial cables in the reverse
loop (for loopback when an error occurs)
throughout the entire data link system.
5
Station-to-sta
tion test
mode
(master
station)
6
Station-to-sta
tion test
mode (slave
station)
Used to check the line between two stations.
The line is checked with the station with the
smaller station number set as the master
station and the other station set as a slave
station.
7
Self-loopback
test mode
Used to check the hardware, including the
send/receive circuits of the communications
system, of one data link module in isolation.
8 to F
Unusable
Summary of Contents for Melsec A Series
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