VIPA System 300S SPEED7 CPU 313SC/DPM - Operating Modes

Chapter 4 Deployment CPU 313SC/DPM Manual VIPA System 300S SPEED7
4-26 HB140E - CPU SC - RE_313-6CF03 - Rev. 07/45
Operating modes
The CPU can be in one of 4 operating modes:
• Operating mode STOP
• Operating mode START-UP
• Operating mode RUN
• Operating mode HOLD
Certain conditions in the operating modes START-UP and RUN require a
specific reaction from the system program. In this case the application
interface is often provided by a call to an organization block that was
included specifically for this event.
• The application program is not processed.
• If there has been a processing before, the values of counters, timers,
flags and the process image are retained during the transition to the
STOP mode.
• Outputs are inhibited, i.e. all digital outputs are disabled.
• RUN-LED off
• STOP-LED on
• During the transition from STOP to RUN a call is issued to the start-up
organization block OB 100. The length of this OB is not limited. The
processing time for this OB is not monitored. The START-UP OB may
issue calls to other blocks.
• All digital outputs are disabled during the START-UP, i.e. outputs are
inhibited.
• RUN-LED blinks
• STOP-LED off
When the CPU has completed the START-UP OB, it assumes the
operating mode RUN.
• The application program in OB 1 is processed in a cycle. Under the
control of alarms other program sections can be included in the cycle.
• All timers and counters being started by the program are active and the
process image is updated with every cycle.
• The BASP-signal (outputs inhibited) is deactivated, i.e. all digital outputs
are enabled.
• RUN-LED on
• STOP-LED off
Overview
Operating mode
STOP
Operating mode
START-UP
Operating mode
RUN