Function Security - YASKAWA VIPA System MICRO Manual

VIPA System MICRO
4.11.2

Function security

Event
RUN ® STOP
STOP ® RUN res. Pow-
erON
RUN
PII = Process image inputs
PIO = Process image outputs
HB400 | CPU | M13-CCF0000 | en | 18-50
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 devel-
oped function secure and have the following system properties:
concerns
general
central digital outputs
central analog outputs
decentral outputs
decentral inputs
general
decentral inputs
general
Effect
BASP (Befehls-Ausgabe-Sperre, i.e. command output lock)
is set.
The outputs are disabled.
The outputs are disabled.
n Voltage outputs issue 0V
n Current outputs 0...20mA issue 0mA
n Current outputs 4...20mA issue 4mA
If configured also substitute values may be issued.
Same behaviour as the central digital/analog outputs.
The inputs are cyclically be read by the decentralized station
and the recent values are put at disposal.
First the PII is deleted, then OB 100 is called. After the execu-
tion of the OB, the BASP is reset and the cycle starts with:
Delete PIO ® Read PII ® OB 1.
The inputs are be read by the decentralized station and the
recent values are put at disposal.
The program is cyclically executed:
Read PII ® OB 1 ® Write PIO.
Deployment CPU M13-CCF0000
Operating modes > Function security
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