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Communication cables should be laid from the master station to the slave station one by one.
Multiple wiring from one point or wiring without terminators may cause communication errors.
2
Arrange total cable length within 1 km.
Arrange branch cable line from a trunk within 400 mm.
Prior to any electric welding around the JW-21MN, take out the coaxial cable from the JW-21MN.
While the coaxial cable is connected to the JW-21MN, any electric welding nearby the JW-21MN
will cause the welding current to enter the JW-21MN and may damage part of its circuit pattern.
Turn
shield ground switch
JW-21MN
Coaxial cable
Wraparound current
"
"
ON
(Note)
FG
Electric welder
Joint using a
connector
JW-21MN
Turn
shield ground switch
FG
Rack etc.
Note: In case enough conductivity is not
established.
2-2
"
"
ON
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