Table 11 Sample Command Sequence
Entry MPRX Response
Notes
#01 <CR> #Done <CR/LF>
Switches MPRX to
command mode
#505 <CR>
#Model E4 Series Ver X.XX
SN97001P <CR/LF>
Reports the software
version and serial
number
#00 <CR> #Done <CR/LF>
Returns MPRX to data
mode
In command discussions, MPRX response characters may be shown in brackets < >. The use of brackets
indicates that the response is a value in the range of characters. The brackets are not part of the response.
For example, the response to command #520 Display Power Fail Bit is either a 0 or a 1. In the
command discussion, the response is shown as:
#PWRB <0-1>
with actual MPRX response being one of the following:
#PWRB 0
#PWRB 1
In this example, PWRB is the four-character identifier for power fail bit, and the 0 or 1 is the value. All spaces
shown in the response are actual spaces sent from the MPRX. In this example, one space is between the
letter B and the number.
Operating Parameters
The MPRX maintains its operating parameters in nonvolatile memory (NVRAM) so that the parameters are
preserved after a power-down sequence.
Power Fail
The system maintains a power fail flag. The host transmits command #520 Display Power Fail Bit to
determine if a power down has occurred. This flag is cleared by both command #63 Reset Reader and
command #65 Reset Power Fail Bit.
Program Download
Program Download stores the MPRX application software into the reader’s flash memory. It is used to install
program upgrades, add features, and to recover from corrupted program data.
Note: Program Download is a custom TransCore utility host process.
Chapter 3 General Software Information
TransCore Proprietary
3–39
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