Technical data

Delete block With this function you declare a logic or data block in the user
memory as invalid. A block will only be declared invalid when it is
not being processed.
The space occupied by these blocks can be used for other blocks via
the "Compress memory" function.
11.2.3
Program Test
Start/stop When you use the START and STOP PG functions, operating the PG
corresponds to manual operation.
You can put the programmable controller into the STOP mode by
calling the STOP function while the controller is in the RUN mode.
You will see the following display for the CPU connected to the PG:
STOP-LED: on
BASP-LED: off
PG-STP is marked in the control bit display. In multiprocessor
operation, the MP-STP control bit is set for the other CPUs.
You exit the SOFT STOP status with a COLD RESTART or WARM
RESTART. In the single processor mode, the CPU exits the stop
mode. In multiprocessor operation, the restart type is registered
initially (the NEUST or MWA control bit is set). However, the CPU
stays in the soft STOP mode until all CPUs are initialized for
multiprocessing. With the next operation "system start" you can start
the programmable controller. This corresponds to operation via the
coordinator (switch to RUN).
You can call the START PG function in the multiprocessor mode to
select the restart type you want for all the CPUs you are using. After
that, you can start the programmable controller with the last CPU.
•• COLD RESTART PG function:
MANUAL COLD RESTART of the CPU is executed.
•• WARM RESTART PG function:
Depending on the setting in DX 0, MANUAL WARM RESTART
or RETENTIVE MANUAL COLD RESTART is executed.
11
PG Functions
CPU 928B Programming Guide
C79000-B8576-C898-01
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