Appendix, A.4 rs-422 connector (optional), Rs-422 connector – American Magnetics 286 Multi-Sensor Liquid Level Instrument (CE-Marked) User Manual
Page 113
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99
Appendix
RS-422 connector
A.4 RS-422 Connector (optional)
13X/18X
INSTRUMENT
EIA-53
0
DEVIC
E
13X/18X CONNECTOR
EIA-530 CONNECTOR
RX+
(PIN 2
)
TX+
(PIN 14
)
TX+
(PIN 3
)
TX-
(PIN16
)
RX-
(PIN 21
)
TWISTED PAIR
TWISTED PAIR
<TWISTED PAIR>
TX-
(PIN 2
)
RX+
(PIN 16
)
RX-
(PIN 3
)
<TWISTED PAIR>
RX+
RX-
TX-
TX+
EARTH GROUND
(SHOWN FOR
REFERENCE ONLY;
CONNECTED TO
INSTRUMENT
CHASSIS AND TO
AC MAINS "EARTH"
CONDUCTOR)
SIGNAL GROUND
(SHOWN FOR
REFERENCE ONLY;
CONNECTED TO
INSTRUMENT RS-422
DRIVER/RECEIVER
CIRCUIT GROUND)
DB25 FEMALE
13
25
12
24
11
23
10
22
9
21
8
20
7
19
6
18
5
17
4
16
3
15
2
14
1
DB25 MALE
13
25
12
24
11
23
10
22
9
21
8
20
7
19
6
18
5
17
4
16
3
15
2
14
1
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