RS422/485 COMMS PORT
The PG6 has one RS422/485 port. This port can be configured to act as
either RS422 or RS485.
5
RS232 PORTS
The PG6 has two RS232 ports. There is the PGM port and the COMMS port.
Although only one of these ports can be used for programming, both ports can
be used for communications with a PLC.
The RS232 ports can be used for either master or slave protocols with any
PG6 configuration.
Connections
PG6: RJ12
Name
PC: DB9
Name
4
COMM
1
DCD
5
Tx
2
Rx
2
Rx
3
Tx
N/C
4
DTR
3
COM
5
GND
N/C
6
DSR
1
CTS
7
RTS
6
RTS
8
CTS
N/C
9
RI
DH485 COMMUNICATIONS
The PG6’s RS422/485 COMMS port can also be used for Allen Bradley
DH485 communications.
WARNING
:
DO NOT
use a standard DH485 cable to connect this port to Allen
Bradley equipment. A cable and wiring diagram are available from Invensys/
Eurotherm.
PG6 to AB SLC 500 (CBLAB003)
24V
-
TxA
3, 8
COMM
-
TxB
4, 7
SHIELD
4
COMM
6
TxEN
5
TxEN
5
COMM
-
RxB
4, 7
24V
-
RxA
3, 8
B
2
TxA
2
A
1
TxB
1
Name
RJ45: A-B
Name
RJ45: PG6
Connections
TX
5V
8
1
7
2
TxB
TxA
130K
130K
5
TxEN (OC)
RX
130K
5V
130K
RxB
4
RxA
3
GND
6
TxEN (OC)
TX/RX
130K
5
TxA
2
8
130K
5V
7
1
TxB
6
GND
RS422/485 4-WIRE
CONNECTIONS
RS485 2-WIRE
CONNECTIONS
PG6 RS232 to a PC