Installation manual

14
English EX-42378
3.2 Connections
DB9 (EX-42378) DB9 (Device)
1 DCD 1 DCD
2 RXD 2 RXD
3 TXD 3 TXD
4 DTR 4 DTR
5 GND 5 GND
6 DSR 6 DSR
7 RTS 7 RTS
8 CTS 8 CTS
DB9 (EX-42378) DB9 (Device)
1 TXD- 1 TCD-
2 TXD+ 2 TXD+
3 RXD+ 3 RXD+
4 RXD- 4 RXD-
5 GND 5 GND
4. Switch and Jumper Settings
4.1 Switch Settings
There are 10 DIP-switches on the back of board of the EX-42378. Of thes are, 2 8-pin
DIP-switches for the modes (SW1 & SW2) and 8 4-pin DIP-switches for termination
(SW3) (see picture on page 13 under layout). With the 2 8-pin DIP-switches (SW1 &
SW2) to set the mode (RS-232, RS-422, RS-485 2-wire or RS-485 4-wire) for all serial
ports. With the 8 4-pin DIP-switches (SW3) you can set the termination for the RX+, RX
-, TX+, TX– signals. This can be set individually for each serial port. The following
tables on page 13, 14 and 15 you can see the setting of the mode switch and terminator
switch. Additionally the setting of the mode switch and terminator switch are printed on
the back of the board.
3. Layout and Connections
7
EX-42378 Deutsch
4. Switch und Jumper Einstellungen
4.1 Switch Einstellungen
Mode Switch (SW2)
Port 5
Port 6
Port 7
Port 8
Modes RS-232 RS-422 RS-485 2-Draht RS-485 4-Draht