The operator's control panel (Figure 16) contains the
following indicators and switches.INDICATORS Power On ON when dc power is ON (combination light and
switch).On when a power-supply circuit breaker is tripped.
ThermalON when any thermal unit is tripped (turns dc OFF). CE Test ON when CE Test switch is ON. Meter
Indicates elapsed running time of the unit.SWITCHES Power On This switch turns on dc power if the POWER CONTROL switch is in DRIVER DEGATE or LOCAL position.
PwrOff if in Local
This switch turns off dc power if thePOWER CONTROL switch is in DRIVER DEGATE or LOCAL position.
InOFF position, the 2703 unit goes off-line. Partition--CPU 1, CPU 2
These two switches are associated with the Two
Processor Switch special feature.ON. This permits the associated CPU to be attached
to the2703. (Refer to the Two-Processor Switch
special feature. )APPENDIX A. OPERATOR'S CONTROL PANEL OFF. The associated CPU is partitioned (cut off)
from the2703. METERING
The2703 usage meter will run when:
1. The2703 is on-line and the CPU is not in a
halt or wait state;
2. TheCPU is ir! a halt or wait state but ehe 2703 is performing active work;
3. Any control unit on the same channel is per
forming active work."On-line" means that 2703 power is ON and the 2703 Meter switch is set to the ON position.
The2703 is performing active work when any of
it s lines are under control of any command other than
the Enable orPrepare commands.
If the2703 Meter switch is changed to the OFF position while the CPU is not in a halt or wait state,
the2703 meter continues tC' run until the CPU is in
a halt or wait state and the2703 is command free.
If theCPU is in a halt or wait state and the 2703 meter is running as a result of another control unit
on the same channel performing active work, chang
ing the2703 Meter switch to the OFF position causes
the2703 meter to stop immedia'_ely.
Metering with theTPS Feature
The Two-Processor Switch (TPS) feature influences
the operation of the2703 usage meter as follows:
1. The2703 raises Metering In only when the 2703 is attached to one of the two channels.
2. The2703 usage meter runs when the Metering Out line from the attached processor is raised.
TableIV defines the operation (.f the 2703 usage meter for the various partition situations.
This table assumes that for each situation
(partition-switch setting) that the necessary
conditions are present (i. e. , wait state,
command free). When the Partition switch is
positioned toOFF, the associated CPU is
partitioned (cut off).
3. The2703 usage meter will also run when the TPS is neutral and the Metering Out lead from either
non-partitionedCPU is active.
65
following indicators and switches.
switch).
Thermal
Indicates elapsed running time of the unit.
Pwr
This switch turns off dc power if the
In
These two switches are associated with the Two
Processor Switch special feature.
to the
special feature. )
from the
The
1. The
halt or wait state;
2. The
3. Any control unit on the same channel is per
forming active work.
The
it s lines are under control of any command other than
the Enable or
If the
the
a halt or wait state and the
If the
on the same channel performing active work, chang
ing the
the
Metering with the
The Two-Processor Switch (TPS) feature influences
the operation of the
1. The
2. The
Table
This table assumes that for each situation
(partition-switch setting) that the necessary
conditions are present (i. e. , wait state,
command free). When the Partition switch is
positioned to
partitioned (cut off).
3. The
non-partitioned
65
