INTERFACE AND PIN ASSIGNMENTS
Interface mode
DIP
switch
(up)
DB 25 Pin Assignment
Jumper 1 JP #
RS-232 1 channel with
handshake
4
2 - in1 (TD), 3 - out1 (RD) , 4 - in2 (RTS) 5- out2 (CTS) , 1 – GND 3A, 4A -- DCE 3B, 4B -- DTE
RS-232 2 channels
without handshake
4
1 ch : 2 -- in1 (TD), 3 -- out1 (RD), 1 -- GND
2 ch : 4 -- in2(TD) , 5 -- out2 (RD), 7 -- GND
RS-485 2 wire
6
9 -- in (-) , 10 -- in (+0) , 13 – GND
11
RS-485 4 wire
7
9 -- in(-) , 10 -- in(+) ; 11--out(-), 12 -- out(+) 13 – GND
11
RS-422
5
21 -- in(-), 23 -- in(+) ; 24 -- in(-), 25 -- out(+) 19 – GND
12
TTL 2 channels
8
1 ch : 15 -- out 1 , 17 -- in 1 , 19 -- GND
2 ch : 16 -- out 2 , 18 – in 2 , 19 -- GND
Table 4
Summary of Contents for 2300M Series
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