User Manual

RS422/485 COMMS PORT
The G308 has one RS422/485 port. The G308A port is isolated, while the
G308C port is not isolated. This port can be configured to act as either RS422
or RS485.
Note: All Red Lion devices connect A to A and B to B, except for Paradigm
devices. Refer to www.redlion.net for additional information.
5
OFF 4 WIRE/ ON 2 WIRE OFF 4 WIRE/ ON 2 WIRE
* * * * * * * * * *
9
PULL UP
PULL DOWN
115200 BAUD
57600 BAUD 38400 BAUD
19200 BAUD
9600 BAUD
2
1
5 3
4
7 8
6
OFF DCE/ ON DTE OFF DCE/ ON DTE OFF DTE/ ON DCE
OFF 422/ ON 485 OFF 422/ ON 485
OFF DTE/ ON DCE
120Ω TERMINATION
5
NC
10
1
3 2
4
6
7
ON
ON
CBLPROG0
ICM5
*
CONNECTING A G308 OPERATOR
INTERFACE TO AN ICM5
Application Dependent
ICM5 DIP Switch Settings
Examples of RS485 2-Wire Connections
G3 to Red Lion RJ11 (CBLRLC00)
DLC, IAMS, ITMS, PAXCDC4C
A+4TxA2
B-5TxB1
COMM3COMM6
TxEN2TxEN5
NameRLC: RJ11NameG3: RJ45
Connections
G3 to Modular Controller (CBLRLC05)
TxA8TxA8
TxB7TxB7
COMM6COMM6
TxEN5TxEN5
RxA
TxA
3,2
2,3
RxA
TxA
3,2
2,3
RxB4,1RxB4,1
TxB1,4TxB1,4
NameModular ControllerNameG3
Connections
DH485 COMMUNICATIONS
The G308’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 Red Lion.
G3 to AB SLC 500 (CBLAB003)
24V-TxA3, 8
COMM-TxB4, 7
SHIELD4COMM6
TxEN5TxEN5
COMM-RxB4, 7
24V-RxA3, 8
B2TxA2
A1TxB1
NameRJ45: A-BNameRJ45: RLC
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
ISOLATED
ETHERNET
AUXILIARY
ISOLATED
RS232
PORT B
E F
ETHERNET
ISOLATED
D
B C
A
HOST B
A
PGM PORT
ISOLATED
RS232
PORT A
ISOLATED
-
+
24VDC
SUPPLY
PORT A
RS485
A
POWER
PROGRAMMING
HOST A
A
USB DEVICE
POWER SUPPLY ISOLATION BLOCK DIAGRAM
(G308A2 ONLY)