MagTek MICRImage - Manual (Page 16)

MICRImage Check Reader
8
Table 2-3. Control Characters
CONTROL
CHARACTER DESCRIPTION HEX VALUE
<STX> Start of Text 02
<ESC> Escape 1B
<ETX> End of Text 03
<CR> Carriage Return 0D
<LF> Line Feed 0A
For example, if <STX> and <CR> are set to YES, the message from the MICRImage will look
like this:
<STX>data<CR>
Communication Modes
The selection of Comm Modes is a quick way of selecting multiple Control Characters. For
instance, to send a carriage return/line feed pair after the data, you can specify Comm Mode 3.
Comm Mode 7, also known as Packet Mode, calculates an LRC (Longitudinal Redundancy
Check), and appends it to the data message. Also, if a <NAK> (hex 15) character is received in
this mode, the MICRImage will resend the last message.
Send Data After Error
The parameter Send Data After Error specifies whether the MICRImage will return data to the
host after a read error. If YES is selected and the MICRImage reads a check with an error, the
MICRImage will send the data back to the host. If NO is selected and the MICRImage finds an
error, it will discard the data and nothing will be sent. The error conditions are listed in
Table 2-4.
Table 2-4. Error and Status Codes
PRIORITY CODE TYPE DESCRIPTION
10 01 Error No MICR data: no transit and no account found
9 09 Status Mexican check
8 08 Status Canadian check
7 05 Error No transit, bad character, bad length, bad check digit
6 07 Error No account, bad character
5 04 Error Bad character in check number
5 04 Status No check number
4 12 Status Short Account (maybe caused by mis-parsed check#)
3 03 Status Low MICR signal, good read
2 10 Status Business check
1 11 Status Amount field present
0 00 Status No error, check OK