MagTek MAXI MICR RS232 - Manual (Page 19)

Section 4. Commands
11
SWB PARAMETERS
The SWB functions are listed in Table 4-2 and described below.
Control Characters and MICR Data
Control Characters may be added to the MICR data message. The characters are always in the
following locations:
<STX> <ESC> data <ETX> <CR> <LF>
The control characters, descriptions, and hex values are shown in Table 4-3.
Table 4-3. 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 MICR Reader will look
like this:
MICR Data: <STX>data<CR>
Control Characters and Card Data
The control characters are also available for card data but they are applied to each track
individually. For example, if the <STX> and <ETX> options are set to YES, the card data
message is transmitted as follows:
Card Data: <STX>[TK1 data]<ETX><STX>[TK2 data]<ETX><STX>[TK3 data]<ETX>
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.