bicker_ser - Driver for Bicker DC UPS via serial port connections

       Nicola Fontana <ntd@entidi.it>

       The needed cable is a standard pin-to-pin serial cable with pins 2, 3 and 5 (on DB9 connector) connected.

       This driver supports no extra arguments from ups.conf(5).

shutdown.return
           Turn off the load and return when power is back.

ups.delay.shutdownisnothonored
           Although that delay is properly set when sending the shutdown command, it seems some UPS ignore it
           and use a fixed 2 seconds delay instead.

       bicker_ser - Driver for Bicker DC UPS via serial port connections

Thecoredriver:nutupsdrv(8)

   Internetresources:
       The NUT (Network UPS Tools) home page: https://www.networkupstools.org/historic/v2.8.3/

Network UPS Tools 2.8.3                            07/08/2025                                      BICKER_SER(8)

bicker_ser supports all Bicker UPSes shipped with the PSZ-1053 extension module such as UPSIC-1205,
       UPSIC-2403, DC2412-UPS and DC2412-UPS-LD.

bicker_ser -h

       bicker_ser -a UPS_NAME [OPTIONS]

           Note

           This man page only documents the hardware-specific features of the bicker_ser driver. For information
           about the core driver, see nutupsdrv(8).

       Depending on the type of your UPS unit, some of the following variables may be changed with upsrw(8). If
       the driver can’t read a variable from the UPS, it will not be made available. Whenever not explicitly
       stated, any variable can be disabled, in which case the action it performs will not be executed. To
       disable a variable, set it to an empty value.

       ups.delay.shutdown (in seconds, default disabled)
           If activated and the UPS is in battery mode and the set time has expired, the output will be
           disabled, and the UPS and energy storage will be disconnected.

       ups.delay.start (in seconds, default disabled)
           If activated and a restart condition switches the UPS output off and on again, the set time is the
           delay between switching on and off. The time should cause a defined off time so that capacities in
           the application can be discharged.

       battery.charge.restart (in percent, default disabled)
           If activated and the UPS is off or restarts, the UPS output will not be released until the energy
           storage device has the set charge state. The energy storage device is charged in the meantime.

       battery.charge.low (in percent, default 20)
           If activated and the UPS is in battery mode and the battery level drops below the set value, a
           shutdown command via relay event is signaled.

       experimental.output.current.low (in mA, default 200)
           If activated and the UPS is in battery mode and the current drops below the set value, the output of
           the UPS will shut down and disconnect the energy storage to prevent self-discharge.

       experimental.ups.delay.shutdown.signal (in seconds, default disabled)
           If activated and the UPS is in battery mode and the set time has elapsed, a shutdown command via
           relay event is signaled.

       experimental.ups.delay.shutdown.signal.masked (in seconds, default disabled)
           If activated and the UPS is in battery mode and the signal at the IN-1 input is high and the set time
           has expired, a shutdown command via relay event is signaled.

       experimental.battery.charge.low.empty (in percent, default 20)
           This parameter stores the threshold value for the "Battery Empty" signal. Currently this setting is
           only valid for relay signaling. Cannot be disabled.

       experimental.ups.relay.mode (default 0x01)
           This parameter controls the behavior of the relay in case of different events. Cannot be disabled.

           Available relay modes:
           0x01   On power fail (normally closed)
           0x02   On power fail (normally opened)
           0x03   Shutdown impulse (1 second)
           0x04   Battery low signal (normally closed)
           0x05   Battery defect signal (normally
                  closed)