Allen-Bradley 1785-KE, Руководство пользователя, Страница: 34 / 93

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4–3
Cabling for the RS-232-C port of the 1785-KE module will vary,
depending on your application. In general, the pinouts for this cabling are
as follows:
2-.+#MG H+&J*+-,G
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4;3$-+(!*++&,%*'G 89:;3<=(8;3$-+
!*++&,%*'G
%4BCC'CDC4'$EF)F,B'# 5 5
&,B#CG'&&$F)FB&B HI2 0 0
,$%$'3$F)FB&B -I2 1 1
,$J+$C&)&")C$#F -H. @ @
%E$B,)&")C$#F !H. 8 8
FB&B)C$&),$BFK 2.- A A
C'(#BE)(,"+#F LM2 6 6
FB&B)%B,,'$,)F$&$%& 2!2 7 7
FB&B)&$,G'#BE),$BFK 2H- 0> 55
&,B#CG'&&$F)FB&B),$&+,# HI2-:H)NE"#(E'#$
"#EKO
5@
,$%$'3$F)FB&B),$&+,# -I2-:H)NE"#(E'#$
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For definitions of each signal, refer to Appendix B.
When communication option switch 5 of switch assembly SW-1
(handshaking enable/disable) is set DOWN, the RS-232-C port of the
1785-KE module can transmit or receive all of the above signals (refer to
Chapter 3 for switch setting information). If this switch is UP, then the
RS-232-C port uses only TXD, RXD, and GND (TXDRET and RXDRET
for longlines).
Important: If you select half-duplex, the 1785-KE uses handshaking
signals even if switch 5 is set UP.
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