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Firmware recovery via HTTP
14 Firmware recovery via HTTP
14.1 Overview
SmartWire-DT Gateway | EU5C-SWD-SERCOS
DOC160805UM01EN | Revision 1 | English | 2017-02 | Released | Public
If the POW system status LED of the gateway shows steady green light,
the "regular" firmware of the gateway is defective or missing (for the
position of the POW LED see section Positions of the LEDs [} page 26]).
In this case only the so-called "backup firmware" is running and the device
is not able to perform its normal gateway functions. This state can be
resolved by downloading a fresh (i. e. uncorrupted) firmware file into the
gateway via HTTP protocol. The backup firmware (which is part of the boot
strap loader running in the gateway) carries a "web server" functionality for
downloading a firmware file comfortably via its Ethernet interface.
For this, you just have to connect the gateway via its Ethernet interface to
an active DHCP server and a configuration PC. The purpose of the DHCP
server is to assign an IP address to the gateway. This assigned IP address
can then be used by the configuration PC to connect to the download
function of the backup firmware running in the gateway, in order to
download the new firmware file via ordinary web browser.
If you do not know the exact IP address assigned to the gateway by the
DHCP server, you can use the Hilscher Ethernet Device Configuration
Tool on your configuration PC (included on the product DVD) in order to
"read out" the newly assigned IP address from the gateway. (The tool uses
the netIDENT protocol to search for all Hilscher devices within the
connected IP network, and then lists all found devices and their IP
addresses.)
Note:
This chapter describes only how to download the recovery firmware.
Instructions on how to configure and operate a DHCP server are not
subject of this manual. For information on using a DHCP server,
please consult your local network administrator.
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© Hilscher 2017
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