Special Features; Remote Firmware Upgrade; Loading And Saving Switch Configuration - Focal 922-DSLH User Manual

9.0 Special Features

The 922-DSLH has several special features to support subsea applications:


Remote Firmware Upgrade


Loading and Saving User Switch Configuration

DHCP Enable/Disable with timeouts

Software Reset

Watchdog Reset

Automatic User Switch Configuration Loading

UDP Heartbeat with critical card status

Multiple Modbus Clients

MIB Counters

IP Validation
9.1 Remote Firmware Upgrade
The 922-DSLH card allows users to update the application firmware for the board's microcontroller over a TCP/IP
interface using a proprietary protocol with multiple verification stages. Focal provides the necessary software
and instructions for performing infield firmware upgrades. Please refer to the Focal 922-0604-00 922 Remote
Firmware Upgrade Guide for detailed information on performing remote firmware upgrades to the cards.
After the Firmware update of the microcontroller is completed the 922-DSLH card will automatically reset
twice before finalizing the update. In case of a failure during a firmware update the 922-DSLH card will
automatically load the factory default application firmware.
9.2

Loading and Saving Switch Configuration

The 922-DSLH card allows the users to load and save Ethernet switch configuration from/into an EEPROM.
The current Ethernet switch configuration can be saved as a group to the EEPROM by writing 0x0001 to Modbus
register 40380. A saved USER Ethernet switch configuration from EEPROM can be loaded into the switch by
writing 0x0002 to Modbus register 40380. The user can revert back to the factory default Ethernet switch settings
by writing 0x0004 to Modbus register 40380.
To change the registers of Ethernet switch A, write the switch register to be changed to Modbus register 40373
and the corresponding data to Modbus register 40374. Then write 1 to register 40375 for triggering a write to
Ethernet switch A.
To change the registers of Ethernet switch B, write the switch register to be changed to Modbus register 40376
and the corresponding data to Modbus register 40377. Then write 1 to register 40378 for triggering a write to
Ethernet switch B.
Focal Technologies Corporation
A Moog Inc. Company
Model 922-DSLH – User Manual
Document No. 922-0677-00, Rev 1.0
Page 9-1