UMSN10A
3
A 220 ohms 1/2 W termination resistor across the TX1 and TX2 terminals of the last unit in the
network is required. (Resistor not included)
SNA10A
T
R
ON
TX1
CAT. II
90-264VAC
47-63HZ 10VA
TX2 RX1 RX2
RS-422
RS-232
L
N
RS-485
PC
TX1 TX2
TX1 TX2
TX1 TX2
TX1 TX2
90
264 VAC
~
FUSE
220 ohms
1/2 W
UNIT #1
UNIT #2
UNIT #247
( 1 ) RS-485 Interface Wiring
Male
9-pin D-SUB
Male
9-pin D-SUB
SNA10A
T
R
ON
TX1
CAT. II
90-264VAC
47-63HZ 10VA
TX2 RX1 RX2
RS-422
RS-232
L
N
RS-485
PC
RX1 RX2 TX1 TX2
RX1 RX2 TX1 TX2
RX1 RX2 TX1 TX2
RX1 RX2 TX1 TX2
90
264 VAC
~
FUSE
220 ohms
1/2 W
UNIT #1
A 220 ohms 1/2 W termination resistor across the receive terminals of the last unit in the
network is required.
UNIT #2
UNIT #247
( 2 ) RS-422 Interface Wiring
6.Application
9-pin
RS-232 port
9-pin
RS-232 port
Female
9-pin D-SUB
Female
9-pin D-SUB
