MagTek MINI MICR RS232 - Manual (Page 17)

Section 4. Commands
9
When sending data, all 8 bits must be provided. The MICR Reader will execute the
command but it will not reply. To make this command permanent, use the SA (Save)
command described at the end of this section.
If no data is sent, the MICR Reader responds with the current settings for SWA.
Note
The new settings for the serial port will not become
effective until the RS (Reset) command is executed.
The Reset command is described at the end of this
section.
SWA PARAMETERS
The SWA functions are listed in Table 4-1 and described below.
Baud Rate
The baud rate is one of seven speeds at which the MICR Reader communicates with the
Host. The lowest speed is 300 baud, and the highest is 19200.
Data and Parity
The number of data bits and the parity bit are interrelated. If even, odd, or mark parity is
selected, the MICR Reader will use seven data bits per byte with one parity bit. If a
parity of none is selected, the MICR Reader will use eight data bits per byte.
CTS/DSR
When CTS/DSR (Clear to Send/Data Set Ready) is set to IGNORE, the MICR Reader
sends data to the Host without waiting for the CTS and DSR signals to be active. When
CTS/DSR is set to USE, the MICR Reader waits for the CTS and DSR signals to be
active before sending data.
Number of Stop Bits
The number of stop bits is either 1 or 2. Normally, one stop bit is used for most
applications.
Two stop bits are used to allow extra time for slower Host equipment.
Intercharacter Delay
The intercharacter delay is used to increase the time between characters transmitted from
the MICR Reader. The time is increased to 13 milliseconds. This parameter affects
character rate but not baud rate (i.e., each character takes the same time to transmit but
the time between characters is increased).