[Copyright notice]
If the failure message version number equals 0.00 E and no serial number exists, the flash
memory checksum has failed, and the MPRX is operating out of boot ROM. In this case, the
MPRX automatically enters download mode and waits for a new program to be loaded into the
flash memory. Follow the instructions in “Download Considerations” on page 3–40 .
Communications can also be verified by using the command sequence in Table 27.
3. If a successful sign-on message is not returned, check connections and communications factors
and correct any errors.
Table 27 Command Sequence to Verify Communications
Entry MPRX Response Notes
#01 <CR> #Done <CR/LF>
Switches the 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 the MPRX to data mode
To check connections and communications factors
1. Confirm that the MPRX has power.
2. Verify the connections between the PC and the MPRX.
3. Verify the receive (Rx) and transmit (Tx) connections.
4. If using handshaking, verify the request to send (RTS) and clear to send (CTS) connections.
5. Verify the COM port settings for the MPRX following the instructions in “Serial Port Communications”
on page 6–95 .
Repeat the procedures in “Verifying Communications” on page 6–88.
If you still cannot verify the MPRX and PC communications, contact TransCore Technical Support.
Chapter 6 Configuration
TransCore Proprietary
6–89
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