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uSign User Manual
7.0 uSign commands description
(Version: 0.02 Date: 2007-03-19) Note: digits are given in little-endian format.
7.1 Command protocol:
Host to device: STX LenL LenH CommandData Lrc1 Lrc2 ETX
STX: 0x02. 1 byte.
LenL+LenH: sizeof(CommandData). 2 bytes.
CommandData: main command string. Several bytes needed.
Lrc1: Exclusive or of CommandData. 1 byte.
Lrc2: Sum of CommandData. 1 byte.
ETX: 0x03. 1 byte.
Device to Host: STX LenL LenH ResponseData Lrc1 Lrc2 ETX
STX: 0x02. 1 byte.
LenL+LenH: sizeof(ResponseData). 2 bytes.
ResponseData: main response string. Several bytes needed.
Lrc1: Exclusive or of ResponseData. 1 byte.
Lrc2: Sum of ResponseData. 1 byte.
ETX: 0x03. 1 byte
7.2 System Commands
7.2.1 Get firmware version
Command string: 78 01
Response string: IDTECH-USIGN V0.02
7.2.2 Get serial number
Command string: 78 02
Response string: Serial number
7.2.3 Get clip area
Command string: 7A 04 01
Response string: Clip area data (8 bytes)
Clip area is a rectangle coded as: left (2 bytes) + top (2 bytes) + right (2 bytes) + bottom
(2 bytes)
7.2.4 Set clip area
Command string: 7A 04 02 Clip area data( 8 bytes)
Response string: 0xE0
7.2.5 Clear clip area
Command string: 7A 08
Response string: 0xE0
Copyright © 2006, International Technologies & Systems Corp. All rights reserved.
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