Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 319)

Appendix
E
Publication 2755-833
Connecting to a Host
The HOST port of the decoder allows communication with a host
device using three standard interfaces: RS-232, RS-422, RS-485.
This appendix contains connection diagrams for each interface. Use
these diagrams when connecting a host device to the HOST port of
the decoder.
The HOST port on the NEMA Type 4 decoder has a 19-pin (male)
connector. The HOST port on the NEMA Type 1 decoder has a
25-pin (female) D shell connector.
C
D
B
E
P
A
S
N
M
F
G
U
L
H
K
T
J V
R
C
D
B
E
P
A
S
N
M
F
G
U
L
H
K
T
J V
R
NEMA Type 1
HOST Port (Female) Connector
1
14
13
25
NEMA Type 4
HOST Port (Male) Connector
NEMA 1
Pins
NEMA 4
Pins
Abb. Function
1 A GND Chassis Ground
2 C TD RS-232 Transmit Data (from decoder to host).
3 B RD RS-232 Receive Data (from host).
4 F RTS RS-232 Request to Send
5 J CTS RS-232 Clear to Send
20 E DTR RS-232 Data Terminal Ready
6 H DSR RS-232 Data Set Ready
7 D SIG GND RS-232 Signal Common
9 L SHLD RS-485 Shield Ground
12 M 485 TERM RS-485 Line Termination. Jumpers to 13 or N. Terminates decoder at each end of network.
13 N 485 A/TERM RS-485 Line Termination. Jumpers to 12 or M. Terminates decoder at each end of network.
14 P TxB+ RS-422(B) or RS-485(B) Transmit Data (from decoder to host).
15 R TxA- RS-422(A) or RS-485(A) Transmit Data (from decoder to host).
16 S RxA ’– RS-422(A) Receive Data (from host).
17 T RxB ’+ RS-422(B) Receive Data (from host).
18 U 422/A TERM RS-422 Line Termination. Jumpers to 19 or V. Terminates decoder at each end of network.
19 V 422 TERM RS-422 Line Termination. Jumpers to 18 or U. Terminates decoder at each end of network.
The cable that connects the decoder to the host varies depending on
the communication standard and the type of connector on the serial
communication port of the host.