Preh MC12 Protocol Information

Preh Tech Bytes
Update: 4/26/00
Product Family:
Subject:
Overview
The MSR can be configured to enable or disable Track 1,2 and 3 output, and can be configured to
disable auto input and require a request to force data output.
OPOS drivers have been written for the RS-232 interface MSR in Touchscreen and are available
under: http://www.preh.com/
The MSR electronics are NOT programmable to include a customer definable Header and
Terminator string, also sentinels cannot be programmed to be sent or turned off.
Initialization
RS232-Parameter fixed: 9600 Baud, 8 Data bits, 1 Stop bit, even Parity.
Output -parameter:
If Auto input is on you will receive data of Card directly after a card swipe. If Auto input is off you
have to send a command Request (02h) to receive data.
Set up
If you change configuration of device you have to send 3 bytes. You will receive a NAK 0x15 (not
Acknowledge) or ACK 0x06 (Acknowledge). It is possible to change configuration at any time.
The default setting of Set up byte is 0x8F (after Power on).
Set up sequence:
Start byte
01h = '^A'
Magnetic Stripe Reader (MSR) in Preh Touchscreen
Protocol for the integrated MSR in Base of Preh Touchscreen
RS-232 Interface ONLY.
Set up byte
No. 13
End byte
04h = '^D'