semaphore KINGFISHER PLUS+ Hardware Reference Manual page 74

Battery Backed RAM is connected to the backup battery via SRAM link located on the back
of the CP-30 module as shown on the diagram below. The SRAM link is installed at shipping
time by the factory.
The user can perform reset to factory defaults / clear the battery backed SRAM.
Note. Reset to factory defaults clears RTU configuration and user logic but it will not clear
the system log.
An alternative way of resetting the module to factory defaults has been added to the CP-30
v2.x hardware. It allows performing a quick reset to factory defaults:
1. Switch off power to the corresponding RTU rack.
2. Short together pins of the 2-pin header (located underneath LED display, on the front edge
of the module) using a jumper link or another suitable conductive object (e.g. a metal
screwdriver, ball-point pen, etc.).
3. Keeping the pins shorted, turn on the RTU power.
4. The short can be removed any time after that.
WARNING. Follow Anti-Static Procedures to avoid permanent damage to the circuit board
components.
Hardware Manual Version 7.16
CAUTION: After removing and re-installing the SRAM link or after
replacing the battery, ensure that the CP-30 is powered up for at
least 1 s.
This will assure the backup battery functioning for the specified life
span.
To perform reset to factory default using the SRAM link:
1. Remove CP-30 module from the backplane.
2. Remove the SRAM link for at least 5 min.
3. Install the SRAM link back on its header.
4. Install CP-30 on the backplane.
5. Switch backplane power ON (if it was OFF).
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Kingfisher Plus+ Hardware Manual
Page 74