GFK-0356Q Appendix B IC690ACC900 Converter B-5
B
RS-422/RS-485 Interface Pin Assignments
Pin assignments and signal definitions for the RS-422/RS-485 interface are listed below.
Table B-2. RS-422/RS-485 Interface for Converter
Pin Signal Name Function I/O
1 Cable Shield
2 DCD(A) Differential Data Carrier Detect Out
3 DCD(B) Differential Data Carrier Detect Out
4 ATCH/ Attach (used with HHP) n/a
5 +5 VDC Logic Power In
6 RTS(A) Differential Request To Send Out
7 SG Signal Ground, 0V In
8 CTS(B’) Differential Clear To Send In
9 RT Resistor Terminator n/a
10 RD(A’) Differential Receive Data In
11 RD(B’) Differential Receive Data In
12 SD(A) Differential Send Data Out
13 SD(B) Differential Send Data Out
14 RTS(B) Differential Request To Send Out
15 CTS(A’) Differential Clear To Send In
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