Swc parameters, Cmc-7 character set, Invalid command response – MagTek MAXI MICR RS232 User Manual
Page 22: Active rts, Fc - format change command

MAXI MICR RS232 with 2-Track MSR
14
SWC PARAMETERS
The SWC functions are listed in Table 4-5 and described below.
CMC-7 Character Set
If NO is selected the MICR Reader will only read E13-B characters. When YES is selected, the
MICR Reader will read both CMC-7 and E13-B characters (see Appendix B). However, the
MICR Reader will only output raw data ("as is" on the check) for both types of characters.
Invalid Command Response
Invalid command response is the action the MICR Reader takes upon receipt of a command it
does not recognize. It can also be used to stop the MICR Reader from receiving any more
commands.
The first option “
?
is the default. If the MICR Reader receives an unrecognized
command, it will return a question mark and carriage return to the Host. The MICR Reader will
then return to an idle state and wait for further commands or check/credit card reads.
For the second option, “no reply - header required,” the MICR Reader will only execute
commands preceded by a GS ASCII character (hex 1D). All other commands will be ignored.
Also, the MICR Reader will not reply to invalid commands.
For the third option, “no reply,” the MICR Reader will execute all valid commands, but it will not
reply to invalid commands.
The fourth option, “ignore all commands,” causes the MICR Reader to ignore any further
commands. Even the SA (Save) command is ignored and therefore this fourth option is only
temporary. To make this option permanent or to reset it, you must use an Insta-Change check.
Active RTS
When this function is set to YES, the MICR Reader will raise RTS and wait 5 seconds for CTS to
become active before sending any data. If the 5 seconds expire and CTS is not active, the data
message will be discarded and nothing will be sent
FC - FORMAT CHANGE COMMAND
Formats are used by the MICR Reader to process and transmit the MICR fields. The format
command allows the selection of a format from the Format List, Appendix A. The data for this
command consists of 4 digits (ASCII characters 0-9). To execute, send the command as follows: