OPTO 22 SNAP PAC S Series, Руководство пользователя

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MAINTAINING THE CONTROLLER
SNAP PAC S-Series User’s Guide 56
Disabling or Enabling Firmware and Strategy Updates Via the Card
If you do not want anyone to be able to update firmware or strategies using a microSD/SDHC card, you can
disable this feature in the controller. (Enabled is the default.)
1. In PAC Manager, open the Inspect window for the controller.
2. Click Other and choose Generic Read/Write from the popup menu.
3. In the Address field, type F7002200. Choose 32-bit Integer as the Type.
4. To disable firmware/strategy updates: In the Value column next to the address, type
0
(zero). Click
Apply.
5. To enable firmware/strategy updates: In the Value column, type any value other than zero and click
Apply.
Setting Time and Date
The SNAP PAC S-series controller’s built-in clock is set at the factory. To change the time and date, see the
instructions in the
PAC Manager User’s Guide .
STAT LED Blink Codes
The STAT LED on the top of the SNAP PAC S-series controller uses blink codes to indicate controller operation
and status conditions. The blink codes can be useful during normal operation and when troubleshooting.
• When the STAT LED steadily glows green it indicates that one or more flowcharts are running.
• When the STAT LED steadily glows orange, it means the controller is on, and either:
–
There isn't any strategy in the controller, or
– The strategy in the controller is stopped, or
– The strategy in the controller has run, and no flowcharts are currently running.
If your S-series PAC has a microSD card slot, the STAT LED:
• Briefly blinks off once every five seconds when it checks to see if a card has been inserted into the card
slot.
• Rapidly blinks when it is reading or writing to the card.
For more information on microSD, see “Using the microSD Card Slot” on page 44 .
Different blink codes can occur in sequence. For example, two fast green blinks followed by three slow red
blinks show the firmware loading at startup followed by a firmware error.
If the STAT LED blinks green when the controller starts up, it indicates the following:
If the STAT LED is blinking orange, it indicates the following:
Number of
Blinks
Speed of
Blinks
Means
2 fast Loading firmware (kernel) from Flash memory to SDRAM.
5 fast Default settings have been successfully restored.
7 fast
(Loader versions 5.1n and older) Entering failsafe bootloader mode (see “Resetting
the Controller” on page 43 ).
Number of
Blinks
Speed of
Blinks
Means
(continuous) slow* There is a problem with the bootloader. Contact Product Support.
(continuous) fast
No IP address is assigned to the controller. This may also indicate the
controller is in hardware test mode.
* About once per second