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PB-7700 series Technical Manual 5 - 6
Ÿ
To enable UPS function: <06> <16> <19> <1F> <05> or <1B> <00> <00>
<00> <00> <18> <00> <18>
Ÿ
To disable UPS function: <06> <16> <19> <1F> <04> or <1B> <00>
<00> <00> <00> <18> <18> <00>
UPS SOFTWARE DETECT
The UPS status is used to inform the software the power source the system is
operating on (AC power or UPS battery). The default of this jumper for a PB7700
delivered with UM-7700 installed is set to detect the UPS status to enable the software
detection on existence of AC power. When the DCD bit of COM1 is set, the AC power
is present. The user has to change this jumper if he/she wants to detect the standard
DCD signal on COM1. However, for PB7700 without UM-7700, the default setting is
to detect standard DCD signal.
JP11 ON PB7700 M/B STATUS
COM1 PIN 1 STATUS
1 – 2 short
Normal (DCD signal)
2 - 3 short
Detect UPS status with UM-7700
UPS DETECTION FUNCTION
In PB7700 system with UM-7700, when the system is working on UPS battery
power, the status is indicated by LED and is detectable by software. This “operating on
battery” signal can be obtained through checking the communication status of COM1 at
signal DCD provided this signal is not engaged elsewhere (In other words, Modem is
not recommended to be used on COM1). When the system is working on AC power, the
DCD signal of COM1 is reset (value = 0). When the system is working on battery
power, the DCD signal of COM1 (BATTWK signal) is set (value = 1). The DCD signal
is obtained as the bit 7 (the most significant bit) of the I/O address 3FEh if the COM1
address is set to 3F8h~3FFh (conventional address for COM1) in system configuration.
There is further an auto detect function on the existence of UPS battery provided.
This capability supports the Posiflex software installed in the preloaded operating
system of Windows to enable or disable the UPS function automatically as long as it is
initialized. The system is capable to detect the existence / status of UPS battery and to
respond to 2 query command strings. These 2 query command strings have to be sent as
«
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