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Manual No. 25-ULPNR102-01; Mar, 2005 LMD 1135 Laser Fixed Mount Scanner
Page 6
RS232 Communications Specifications
RS232 Data Transmission Format
Parameter
Default Optional Settings
Timing Asynchronous
No. of Start Bits 1 bit
No. of Stop Bits 1 bit 1 or 2 bits
No of Data Bits 8 bit 7 or 8 bits
Parity None Odd / Even / None
Baud Rate 9600 baud 150 to 38,400 baud
Handshaking None Hardware / Software/ None
RS232 Transmit / Receive Character Format
TXD/
RXD
Start
Bit
LSB
7 or 8
Data Bits
MSB
Parity
Bit
Stop
Bit
RS232 Data Format
Transmit Decoded Data CR
ESC Command CR
Receive
STX Command ETX
RS232 Signal Level
Signal Name In / Out Mark/Off Space/On
TXD Out -5 to -15 +5 to +15
RXD In -3 to -15 +3 to +15
Connector Pin-outs
9 Pin D-Sub Female Connector (with power stereo jack)
Pin No. Signal Direction
1 Frame Ground
2 TxD Output
3 RxD Input
4 NC
5 Signal Ground
6 NC
7 CTS Input
8 RTS Output
9 NC