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Firmware-update
11 Firmware-update
11.1
Overview
UNIGATE® IC has a 64 kbyte flash memory for the firmware. In the firmware-update-mode the
firmware can be replaced via the UNIGATE® IC's serial interface.
11.2
Adjusting the firmware-update-mode
11.2.1
Adjustment by hardware
UNIGATE® IC can be brought to the firmware-update-mode by the hardware. For it the signal -
BE (boot enable) has to be pulled to the potential GND during the Power-up-process.
11.2.2
Adjustment by software
If the UNIGATE® IC is in the configuration mode (see chapter 7.2 on page 23) it can be brought
to the firmware-update-mode interactively through the command CTRL-F (0x06). After sending
the command a security query follows, that has to be answered with J or N (J = Yes, N = No).
After a positive confirmation the IC is re-started in the firmware-update-mode.
11.3
Execution of the firmware-update
The safest way for the firmware-update is the use of the basis board combined with the software
"FDT.EXE" (firmware-download-tool). These tools are available from Deutschmann Automation
(see chapter 13 on page 33).
It is also possible to use the description and the tools of the manufacturer of the controller
(TEMIC, 89C51RD2) as well.
11.4
Note on safety
The firmware-update should only be carried out when there is no other possibility left. A firm-
ware-update-process that has already been started CANNOT be undone. With it the previously
used firmware is permanently unusable.
11.5
Operation mode of the IC
Standard-operation mode
This mode is required for the regular use of the IC. In this mode the IC will process all script-com-
mands and normally exchange the corresponding user data. The bus as well is operated in this
mode through the IC.
Configuration mode
In the configuration mode the UNIGATE® IC will carry out a self-test after the start (or after a
reset). After a successful self-test it will wait for further commands. Here it is possible to load a
trnslated script into the device or to initialize the firmware-download-mode.
30
Instruction manual UNIGATE
Deutschmann Automation GmbH & Co. KG
®
IC - DeviceNet V. 2.7
7.10.10
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