Toshiba AS311 User Manual page 15

Hardware reset switch
When this switch is pressed, the AS311 will be reset. Use this switch when you
have changed the switch settings.
Channel 1 and channel 2 serial ports
Used to connect the serial transmission line (RS-232C or RS-422). D-Sub 25-pin
female connectors are provided on the AS311.
The pin assignment is as follows.
Channel 1
(RS-232C/RS-422)
1 FG
2 TXD
3 RXD
4 RTS
5 CTS
6
7 SG
8
9 5 Vdc
10 TXDA
11 RXDA
12 RTSA
13 CTSA
14
15
16
17
18
19
20 DTR
21 TXDB
22 RXDB
23 RTSB
24 CTSB
25
The arrow on the above figure shows the signal direction.
FG is connected with the T3's frame ground internally. (both channels)
DTR and RTS are ON while power is on.
Data transmitting is available when CTS is ON. DSR has no effect for transmission.
Pin 9 (5 Vdc) can be used to supply 5 Vdc power. (total max. 50 mA)
for RS-232C
for RS-422
for RS232C
for RS-422
1. AS311 Overview
Channel 2
(RS-232C)
1 FG
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SG
8
9 5 Vdc
10
11
12
13
14
15
16
17
18
19
20 DTR
21
22
23
24
25
User's Manual
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