MSR120 Programmer’s Manual UDN PM010, Rev. 1.1
Section 4 – Commands and Responses 2003/1/21
ESC (1Bh)
"
Abort
Comments
1 Abort command is issued after the first character of double character "read" command has been issued.
2 Abort command is issued after the reader has responded to command "P" or "p". (Reader would be waiting
for card swipe to read).
3 No response to “Abort” command if the reader just power on and no command is received before.
9 (39h)
"
Version Report
Comments
Transmit a string that includes the version number (8-digit) and its date (mmddyy).
DEL (7Fh)
"
Warm Reset
Comments
Abort all current actions and cause the device to execute all initialization functions (device will respond exactly as
it would for a "power on" cycle).
Note: This command byte is not recognized as a command within data strings.
$ (24h)
"
Reader Status Request
Comments
Transmit one byte representing the reader status as follows:
Table 4-3. Reader Status
Bit
0
1
1 & 0
00:Green LED off
01:Green LED on
10:Green LED flash
3 & 2
00:Red LED off
01:Red LED on
10:Red LED flash
4
Buzzer disable
Buzzer enable
5
No magstripe data
Magstripe data available
6
Not ready to read
Ready to read
7
Parity for protocols 0 &1 Not used for protocol 2
!"
Response
!
Reader to Host
^ (5Eh)
"
ACK
Comments
Page 4-4
Proprietary and Confidential
Total 36 pages
