2.2.21 JRS21-24 (RS-232/422/485 select jumper for COM2
port)
25
JRS21-24 Jumper
RS-232 (Dafult-setting)
RS-422
Mode
Full Duplex
3T/5R RS-232
Status
1T/1R RS-422
(Default)
1
Jumper
3
Setting
RS-485
Pure RS-232
Half Duplex
1T/1R RS-485,
TX ENABLE Low
Active
1
1
3
3
Connector PN
220-96-03GB01
PH03N2-7BAN000
RS-485
RS-422
Half Duplex
Full Duplex
1T/1R RS-485,
1T/1R RS-422 with
TX ENABLE High
termination resistor
Active
and bias resistor.
1
3
Pin 1
Vendor
PINREX
HORNGTONG
RS-485
Half Duplex
1T/1R RS-485 with
termination resistor and
bias resistor.
TX ENABLE Low Active
1
1
3
3
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42
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