OPTO 22 SNAP-PAC-S1, Руководство пользователя

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CHAPTER 3: MAINTENANCE AND TROUBLESHOOTING
SNAP PAC S-Series User’s Guide 45
45
Booting from Firmware on the Card
You can also boot the controller from firmware on the card, rather than from the firmware in flash
memory, for example to test new firmware before updating it.
You can write to the card in one of two ways: either use your PC to FTP files to the card in the
controller, or use a card reader with your PC and simply copy files with Windows Explorer.
NOTE: The controller must have loader version 5.1b or higher. Controllers configured for Secure Strategy
Distribution (SSD) cannot boot from the card.
1. Locate the firmware file you wish to boot from and rename it to fit the 8 dot 3 filename format
(see
“Card Type and Format” on page 42 ).
Recommended naming scheme:
PPP-TMM.mmb
where:
Example of a recommended firmware filename:
R2-R8.4a
2. Create a directory on the card in the root and name it:
boot
Remember, if you are looking at the card in the controller , you create the
boot
directory in the
sdcard0
directory. If you are looking at the card in a card reader , create the
boot
directory at
the top level. You can’t see the
sdcard0
directory, but it is still there.
3. Copy the renamed firmware file to the
sdcard0/boot
directory on the microSD card (see the
following graphic).
IMPORTANT : The boot directory must contain only one firmware file. If it contains more than one,
the wrong firmware may be loaded.
PPP
T
MM
mm
b = controller type (R1, R2)
= R for release (or B for beta)
= major revision number
= minor revision number
= build letter