Rockwell Automation 2755-DM9, -DM9E High Speed Decoder - Manual (Page 84)

Chapter 6
Communicationg With a Host
6–2
Figure 6.1
HOST Port Pin Numbers
HOST Port on Decoder,
Data Terminal Equipment (DTE)
Note: Connect shield to shell of HOST port cable
connector.
RD (RECEIVE DATA) RS-232
RTS (REQUEST TO SEND) RS-232
SIGNAL GROUND COMMON (RS-485)
1
2
3
*
*
CHASSIS GROUND
Connector:
User defined.
Unique to each host device
Cable:
Use shielded cable that is
appropriate for the
communications standard
you are using.
Host Device
* Exact pin designations depend on
specific host device used.
4
5
7
14
15
*
*
*
*
A’ (RS-422) - (RD) RECEIVE DATA
166
6
*
B’ (RS-422) + (RD) RECEIVE DATA
17 *
18
*
SHIELD (RS-485)
9
12
13
*
19
DTR (DATA TERMINAL READY) (RS-232) 20 *
B (RS-422) + (SD) SEND DATA (B RS-485)
*
LINE TERMINATION (RS-485)
A (RS-422) - (SD) SEND DATA (A RS-485)
LINE TERMINATION (RS-422)
CTS (CLEAR TO SEND) RS-232
TD (TRANSMIT DATA) RS-232