Connecting Power Supplies To Rs232 Or Rs485 Bus; Single Power Supply - Lambda Genesys GENH 750W Technical Manual

7.5 CONNECTING POWER SUPPLIES TO RS232 OR RS485 BUS

7.5.1 Single power supply

1. Select the desired interface RS232 or RS485 using rear panel setup switch SW1-6 (Section 4-
4).
-RS232: DOWN position
-RS485: UP position
2. Connect rear panel IN connector to the controller RS232 or RS485 port using a suitable
shielded cable. Refer to Figures 7-2, 7-3 and 7-4 for available RS232 and RS485 cables.
13
1
Sockets
5
1
Sockets
5
1
Sockets
DB-25 CONNECTOR
PIN NO.
1 SHIELD
TX
2
3 RX
7 SG
Fig.7-2: RS232 cable with DB25 connector (P/N: GEN/232-25)
DB-9 CONNECTOR
PIN NO.
SHIELD
HOUSING
2 RX
3 TX
5
SG
Fig.7-3: RS232 cable with DB9 connector (P/N: GEN/232-9)
DB-9 CONNECTOR
PIN NO.
HOUSING SHIELD
9 TXD
8 TXD
1
SG
5
RXD
4
RXD
Fig.7-4: RS485 cable with DB9 connector (P/N: GEN/485-9)
83-507-5002 Rev. A
L=2m typ.
8 PIN CONNECTOR
NAME PIN NO. NAME
SHIELD
8
RX
7
TX
1
SG
L=2m typ.
8 PIN CONNECTOR
NAME PIN NO.
NAME
HOUSING
SHIELD
7 TX
8
RX
1
SG
L=2m typ.
8 PIN CONNECTOR
NAME PIN NO. NAME
HOUSING SHIELD
-
RXD
6
+
3 RXD
1
SG
-
5
TXD
+ 4
TXD
53
REMARKS
TWISTED
PAIR
REMARKS
TWISTED
PAIR
REMARKS
-
TWISTED
+
PAIR
-
TWISTED
+
PAIR
8
1
8
1
8
1