Connecting Power Supplies To Rs232 Or Rs485 Bus; Single Power Supply - TDK-Lambda Genesys GEN8-300 User Manual

7.4 CONNECTING POWER SUPPLIES TO RS232 OR RS485 BUS

7.4.1 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
Socket
Fig.7-2: RS232 cable with DB25 connector (P/N: GEN/232-25)
5
1
Socket
Fig.7-3: RS232 cable with DB9 connector (P/N: GEN/232-9)
5
1
Socket
DB-25 CONNECTOR
NAME
PIN NO.
1 SHIELD
2 TX
3
RX
7 SG
DB-9 CONNECTOR
PIN NO. NAME
HOUSING SHIELD
2 RX
3 TX
5
SG
DB-9 CONNECTOR
NAME
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)
L=2m typ.
8 PIN CONNECTOR
PIN NO.
NAME
HOUSING
SHIELD
8
RX
7
TX
1
SG
L=2m typ.
8 PIN CONNECTOR
PIN NO. NAME
HOUSING
SHIELD
7 TX
8
RX
1
SG
L=2m typ.
8 PIN CONNECTOR
PIN NO. NAME
HOUSING SHIELD
-
-
6 RXD
+ +
3 RXD
1 SG
-
-
5
TXD
+ 4 +
TXD
51
51
8
1
REMARKS
TWISTED
PAIR
8
1
REMARKS
TWISTED
PAIR
8
1
REMARKS
TWISTED
PAIR
TWISTED
PAIR