User manual

Copyright © 2010, International Technologies & Systems Corporation. All Rights Reserved
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ID TECH EzWriter
Interface
The communication parameters (port settings) are fixed for both USB & RS232 operation.
The parameters are:
Baud rate: 9600
Data bits: 8
Parity: None
Stop bit: 1
RS-232:
A 6.0’ cable with DB-9 female connector with a 2.1 mm, center-positive power Jack
molded into the DB-9 housing. The following is signal pin-out of the connector:
DB-9F (RS-232) connector
PIN Signal Direction
1 Not Used
2 TXD Out
3 RXD In
4 Not Used
5 Signal Ground
6 Not used
7 CTS In
8 RTS Out
9 Not used
CASE Chassis ground Connected to the die
cast cover
POWER JACK
Center pin +24VDC In
Ring Signal Ground
Table 1 RS-232 cable Pin-Outs