Omni 4000 Series - Page 49

OMNI 4000/7000 Installation Guide – Rev H
3-27
Installation
Table 3-6: Back Panel Wiring of the Serial Module
Pinouts
Signal Name
Signal Type
RS-232
RS-485 2-Wire
RS-485 4-Wire
1
TX
B
TX-B
RS232 or RS485–Port 1
2
TERM
–
–
RS232 pull-down termination–
Port 1
3
RX
–
RX-B
RS232 or RS485–Port 1
4
GND
GND
GND
Signal Ground–Port 1
5
RTS
A
TX-A
RS232 or RS485–Port 1
6
RDY
–
RX-A
RS232 or RS485–Port 1
7
TX
B
TX-B
RS232 or RS485–Port 2
8
TERM
–
–
RS232 pull-down termination–
Port 2
9
RX
–
RX-B
RS232 or RS485–Port 2
10
GND
GND
GND
Signal Ground–Port 2
11
RTS
A
TX-A
RS232 or RS485–Port 2
12
RDY
–
RX-A
RS232 or RS485–Port 2
Figure 3-22 through Figure 3-25 are examples of Serial module wiring. Always use your project
specific drawings when wiring Serial modules to field devices.
Figure 3-22: Example Serial Module Wiring to a Printer
Module
Serial
DB25
Connector
Male
RS-232 PRINTER
4(10) RET
2(8) TERM
3(9) RX
5(11) RTS
6(12) RDY
3
20
7
1(7) TX
RX
RET
DTR
Jumper provides pulldown terminating resistor to -9v
Jumper eliminates extra Form Feed before and after Reports.
*
**
* **