Table of Contents
Advertisement
W&T
A2.2.2 ... via the network
Updating the firmware over the network offers the advantage of
a higher speed compared with the serial method. The
prerequisite however is that network-side remote maintenance
be enabled by the command %N1.
After establishing a TCP socket connection to Port 8000 on the
LAN-Modem, the latter returns a short identifier. If this is replied
to within three seconds with the character „U", update mode is
started with the following message.
MB90F562 bootloader v1.x W&T xx/xxxx
Invoked by software, ESC to cancel
Waiting (Port 1)...
As in the case of a serial update, the LAN-Modem now expects
the update data in S record format. Under Windows the
following method using a Telnet client and pasting from the
clipboard has proven useful.
Example with Telnet client under Windows
1. Open the mhx file with the LAN-Modem firmware in an editor
and copy the entire contents to the clipboard.
2. From Start r Run r telnet [IP address] 8000 on a Windows
machine having a TCP/IP stack, the network connection to
the LAN-Modem is established and the message Wxxxx
appears.
3. Entering a U within the first three seconds activates update
mode, and the LAN-Modem sends the corresponding reply.
The serially connected device is informed of the access with
a short message.
1
The update mode is protected with a timeout of 30s.
If no data are transmitted within this time, the LAN-
Modem automatically resumes normal operating mode.
78
Appendix
Advertisement
Table of Contents
