Rockwell Automation 2755 AtomScan Bar Code Reader - Manual (Page 111)

Cable Pinouts B–4
Publication 2755-6.9
RS-232 Port
1 13
14 25
Pin Signal Function
1 GND Chassis ground
2 TXD Reader transmits data to host device.
3 RXD Reader receives data from the host device.
4
RTS, TXD, or
RS-485 Enable Host RS-232 RTS or under software control aux RS-232
TXD, or RS-485 transmitter enable.
5 CTS or RXD
Host RS-232 CTS or under software control aux RS-232
RXD.
6 Output
TTL relay output (5V dc @ 2 mA). Sink is 10 mA and
source is 2 mA.
7 GND Signal ground
8 Output
TTL relay output (5V dc @ 2 mA). Sink is 10 mA and
source is 2 mA.
9 5 Volts 5 V
10 Input Trigger input; same as pin 1 of trigger connector.
11 Input
Default configuration pin goes to pin 8 of the reader
connector and the default switch.
12 Not Used No connection
13 RXB+
Reader receives data from the host device in RS-485 and
RS-422 modes.
14 TXA– Reader transmits data to host device.
15 Output Relay contact normally open
16 RXA–
Reader receives data from the host device in RS-485 and
RS-422 modes.
17 Common Common
18 Not Used No connection
19 TXB+
Reader transmits data to host device in RS-485 and
RS-422 modes.
20 Not Used No connection
21 Not Used No connection
22 GND Ground
23 Not Used No connection
24 Not Used No connection
25 Input
New Master input to pin 12 of the reader connector and
New Master button.