Server Technology PP02 - Manual (Page 15)

Operating Modes and Options
Remote Power On/Off offers three exclusive Operating Modes with several selectable options for each mode. Operating modes and
options are determined by the Power On/Off +Aux control unit's DIP-switch settings.
The two common Operating Modes are the Power-ON Mode (next page) and the RE BOOT Mode (begins page 20). These operating
modes, their individual options, and the DIP-switch settings, are discussed in the following sections. Discussion of the third mode, the
Infinite-On/Off Mode, begins on page 26.
Safeguards:
The Power On/Off +Aux control unit is programmed with several safeguards which apply automatically to each operating
mode. It is important to note each as they may cause time-related functions to appear incorrect.
Wake-up Delay - Whenever power is first supplied to the Power On/Off +Aux control unit there will be a 30 second
delay before any power-ON signal is sent to the IPM. This delay can help protect the devices attached to the IPM from
power surges and transient spikes that occur during brownouts or following a blackout.
Minimum ON Time - In all cases where the power is automatically turned-ON by a function of the Power On/Off +Aux
unit, it will remain ON for a minimum of one (1) minute for a PP02, 90 seconds for a PP03, and five (5) minutes for a
PPNT. This design is to ensure a complete POST (Power On Self Test), RAM check, and complete boot whenever the
PC is powered-ON.
Minimum OFF Time - Anytime the power is turned-OFF by an automatic function of the Power On/Off +Aux unit, it
will remain OFF for a minimum of 30 seconds. This design is to ensure a complete "settle" whenever the PC is powered-
OFF.
RE BOOT Inhibit Time - This timer inhibits incoming calls from initiating a reboot for 2 1 /
2
minutes whenever power is
first supplied, the IPM is instructed to turn on, or following a prior RE BOOT. This guarantees the host or server system is
always allowed to fully boot and be ready to answer incoming calls before subsequent reboots are allowed; perpetual
reboots due to incoming calls that cannot be answered - because the system is still booting - are avoided. This safeguard,
designed for high-traffic systems such as fax servers, applies only to the
RE BOOT Operating Mode. After supplying
power to the Power On/Off +Aux unit for the first time, be sure to wait about three minutes before testing.
Remote Power On/Off Operating Modes • 15