Holtgreven GSE-375 - Manual (Page 60)

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The flash memory on the main processor is only rated to be reflashed up to 10 times under extreme
industrial and temperature conditions.
P
REPARE
F
OR
U
PGRADE
Before the Model 370/375 firmware can be updated, the procedure below must be followed. A
computer with a serial port or USB port is required for loading a flash file. If you are using a USB
port, a USB to serial converter is necessary.
1. Connect the communication cable from the computer to comm. 1 of the Model 370 or Model
375.
2. Open a communications program or terminal window program (such as Communication Plus)
on the computer.
3. Set the protocol of the Model 370/375 to be 9600 baud, 1 stop bit, no parity.
4. Go to parameter 65020 (re-flash) and press [TARE] (Model 370) or [SAMPLE/Enter] (Model
375). Press [TARE] (Model 370) or [SAMPLE/Enter] (Model 375) at the "ARE YOU SURE ?
prompt. Press [TARE] (Model 370) or [SAMPLE/Enter] (Model 375) at the Enter = Flash
prompt.
~ Or ~
Unplug the Model 370/375 and move Reflash jumper (E2) from NORMAL to REFLASH.
5. The terminal program should show:
GSE Scale Systems
Division of SPX
300 Series Bootloader Version XX (where XX should be at least 03)
Date (where Date should be at least Feb 2004)
a. Erase Flash
b. Program Flash
c. Set Baud Rate
d. Quit
6. Typically the default baud rate on the computer will be 9600. The programming time at 9600
baud is about 6 minutes. At 38400 baud the programming time is about one minute and a
half. At 57600 baud the programming time is about one minute. Set the Model 370/375 baud
rate in the terminal software to the desired baud rate by entering c from the computer
keyboard. Set the baud rate of the terminal program to match the baud rate chosen for the
Model 370/375.
L OAD F LASH F ILE
1. The current flash file must be erased. Enter an a from the computer keyboard. When finished
the menu choices will be replicated.
2. To program flash, enter a b from the computer keyboard. Open the flash file from your
terminal window and send it to the Model 370/375. After the file loads the menu choices will
be replicated.
3. To end the flash process, enter a d from the computer keyboard to quit. The Model 370/375
will restart.
4. If the Reflash jumper (E2) was set to REFLASH, unplug the Model 370/375 and return the
jumper to the NORMAL position.
In order to enable the Model 375 keypad you must cycle power and hold the [SAMPLE/Enter]
key on power up.