OPTO 22 SNAP-PAC-S1, Руководство пользователя

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CHAPTER 3: MAINTENANCE AND TROUBLESHOOTING
SNAP PAC S-Series User’s Guide 41
41
CAUTION: Do not hold the RESET button too long. If you hold it down longer than five seconds, the
controller will enter hardware test mode, which is indicated by the STAT LED blinking orange, rapidly
and continuously. Hardware test mode erases all files in RAM and flash memory and resets the IP
address. If your controller restarts in hardware test mode, cycle power; the result will be same as
restoring factory default settings (see table above).
If you hold down the R
ESET
button less than five seconds but longer than the time needed to restore
the factory default settings, the controller will restart in failsafe bootloader mode. This mode is
indicated by the STAT LED: in loader versions older than 5.1c, it blinks green 7 times quickly; in loader
5.1c and newer, it blinks red/green continuously. Failsafe bootloader mode is a diagnostic mode that
you don’t need to access unless you are troubleshooting a problem with Opto 22 Product Support. If
your controller restarts in failsafe bootloader mode, cycle power to the device. This performs the
simple reset described above and leaves the controller ready to load a new strategy.
Loading New Firmware
Each SNAP PAC S-series controller contains firmware (sometimes referred to as the kernel ), which is
similar to an operating system. If the firmware should become damaged, or if a new version of the
firmware is released, you can load new firmware to the controller following instructions in the
PAC
Manager User’s Guide .
Using the MicroSD Card
SNAP PAC controllers manufactured in November 2008 and later have a microSD card
slot in the top of the controller’s case. Cards up to 2 GB capacity with the microSD logo
(shown at right) can be used in this slot. Cards with more than 2 GB capacity may fit in
the slot, but the controller will not recognize them.
Do not use microSD-HD cards.
Using the microSD card with FTP, you can read the card at 380 kB/s and write to it at 231 kB/s.
The microSD card can be used for several purposes:
• To store data or files, which you can access using PAC Control commands or an FTP client. (PAC
Manager cannot be used to access data, because it cannot see the card’s directory.)
Restore the factory default set-
tings.
Press and hold the R
ESET
button
for approximately 1 sec until the
STAT LED turns solid green, and
then immediately release the but-
ton.
The controller restarts.
Any files, strategy, archived strat-
egy, and persistent variables in
RAM and flash memory are
erased.
IP addresses are reset to 0.0.0.0
and subnet masks to
255.255.255.0.
To perform this kind of reset... ...do this... Result