Horner APG XL7 OCS - Manual (Page 100)

XL7 User Manual
CHAPTER 18: MAINTENANCE
18.1 Firmware Updates
The XL7 OCS products contain field updatable firmware to allow new features to be added to the
product at a later time. Firmware updates should only be performed when a new feature or correction
is required.
Steps for updating the firmware:
1. Loading new firmware will erase any program stored in the OCS for safety and compatibility
reasons. Please backup the application prior to performing a firmware update.
2. Copy the supplied files onto a FAT32 formatted MicroSD or USB based flash device.
3. Insert the flash device into the XL7 making sure no other memory or drives are connected to the
device.
4. Press and hold the system menu for at least 6 seconds and a firmware update menu will be
presented.
5. If you are just updating the firmware, press the “Update Firmware” button. If you are updating
the bootloader, firmware and FPGA, press the “Update Bootloader” button. On early versions
of firmware this can take several minutes. This will take about 15 seconds on newer firmware.
18.2 Backup Battery
The XL7 has an advanced battery system. It uses a rechargeable lithium battery. The battery powers
the real time clock when power is removed. To store registers, the battery continues to power the OCS
for less than a second after external power is removed. In this time the registers and other retentive
data is saved to internal flash memory. This battery will need about 8 hours of charging to last
approximately 2 years when powered off.
NOTE: For the registers to be retentive the battery only need to be charged and present at power down.
Under normal conditions the battery in the XL7 OCS should last approximately seven years. Higher
operating temperatures or variations in batteries may reduce this time.
18.2.1 Indications the battery needs replacing
The XL7 OCS indicates the battery is low, failed or missing in a variety of ways. At power-up, an error
message is displayed indicating the low or missing battery. The user program can monitor the battery
using %SR55.13. This bit will turn on if the battery is low or missing. The system menu also contains a
battery status message under the diagnostics sub-menu (see the chapter on System Settings and
Adjustments).
Warning: Firmware updates should only be performed when the equipment being controlled by
the XL7 OCS is in a safe, non-operational state. Communication or hardware failures during the
firmware update process can cause the controller to behave erratically resulting in injury or
equipment damage. Make sure the functions of the equipment work properly after a firmware
update before returning the device to an operational mode.
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