ABCelectronique : portail d'information dans le domaine de l'électronique
RS422    37 broches
coté DTE
coté DCE


N° broche Nom Dir Description
1 GND   Shield Ground
2 SRI <-- Signal Rate Indicator
3 n/c - Spare
4 SD --> Send Data
5 ST --> Send Timing
6 RD <-- Receive Data
7 RTS --> Request To Send
8 RR <-- Receiver Ready
9 CTS <-- Clear To Send
10 LL --> Local Loopback
11 DM <-- Data Modem
12 TR --> Terminal Ready
13 RR <-- Receiver Ready
14 RL --> Remote Loopback
15 IC <-- Incoming Call
16 SF/SR --> Select Frequency/Select Rate
17 TT --> Terminal Timing
18 TM <-- Test Mode
19 GND   Ground
20 RC   Receive Twister-Pair Common
21 GND   Spare Twister-Pair Return
22 /SD   Send Data TPR
23 GND   Send Timing TPR
24 GND   Receive Timing TPR
25 /RS   Request To Send TPR
26 /RT   Receive Timing TPR
27 /CS   Clear To Send TPR
28 IS <-- Terminal In Service
29 /DM   Data Mode TPR
30 /TR   Terminal Ready TPR
31 /RR   Receiver TPR
32 SS --> Select Standby
33 SQ <-- Signal Quality
34 NS --> New Signal
35 /TT   Terminal Timing TPR
36 SB <-- Standby Indicator
37 SC   Send Twister Pair Common