Table of Contents
Advertisement
15
RS-232 or RS-485 Option Board
Figure 15-1 gives the board connections and pin designators for RS-232/RS-485.
METER RJ-12 PIN (J4)
6
5
4
3
2
1
Figure 15-1. RS-232/RS-485 Option Board and Pin Designations
Figure 15-2 shows board connections and pin designators for older RS-232 and RS-485
option cards.
RS-232 (P4) AT J4
1
N/C
2
RTS
3
TX
4
RX
5
COMM RTN
6
N/C
Figure 15-2a.
Older RS-232 Option Board
and Pin Designations
15-2
A
S2
A
S4
B
A
S1
RS232
RS485 HALF DUPLEX RS485 FULL DUPLEX
GND
RX
TX
RTS
6
1
P11
PIN 1A
PIN 1
PIN 11
A
B
C
D
E
S3
RX-TX-
RX+/TX+
RS-485 (P4) AT J4
J4
1
TX/RX (A)
2
TX/RX (B)
3
COMM RTN
4
RX (A)
5
RX (B)
A
6
N/C
Figure 15-2b.
Older RS-485 Option Board
and Pin Designations
6
1
RX-
TX-
RX+
TX+
S3
A
S1
6
B
1
P11
PIN 1
PIN 10
S4
A
J4
A
S2
Advertisement
Table of Contents
