Manual VIPA System 200V Chapter 3 Deployment CPU 21x-1Bx06
HB97E - CPU - RE_21x-1Bx06 - Rev. 13/20 3-19
The CPUs include security mechanisms like a watchdog (100ms) and a
parameterizable cycle time surveillance (parameterizable min. 1ms) that
stop res. execute a RESET at the CPU in case of an error and set it into a
defined STOP state.
The VIPA CPUs are developed function secure and have the following
system properties:
Event concerns Effect
RUN → STOP
general
BASP (Befehls-Ausgabe-Sperre, i.e. command
output lock) is set.
central digital outputs The outputs are disabled.
central analog outputs The Outputs are disabled.
- Voltage outputs issue 0V
- Current outputs 0...20mA issue 0mA
- Current outputs 4...20mA issue 4mA
If configured also substitute values may be
issued.
decentral outputs Same behavior as the central digital/analog
outputs.
decentral inputs The inputs are cyclically be read by the decentra-
lized station and the recent values are put at
disposal.
STOP → RUN
res. PowerON
general First the PII is deleted, then OB 100 is called. After
the execution of the OB, the BASP is reset and the
cycle starts with:
Delete PIO → Read PII → OB 1.
central analog outputs The behavior of the outputs at restart can be
preset.
decentral inputs The inputs are cyclically be read by the decentra-
lized station and the recent values are put at
disposal.
RUN general The program execution happens cyclically and can
therefore be foreseen:
Read PII → OB 1 → Write PIO.
PII = Process image inputs
PIO = Process image outputs
Function securit
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