On module power-up or during run through, the TSX CAY module performs self-tests with the outputs in safety position (outputs to 0).
On completion of the self-tests:
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Self-tests
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Module
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If the self-tests have not detected an error.
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The module tests the configuration with the outputs in the safety position. If the configuration is correct, the module goes into measurement mode (OFF).
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If the self-tests have detected an error or if the configuration is incorrect.
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The module signals a fault and retains the outputs in the safety position.
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All the configured channel operating modes are useable.
Switching the PLC From RUN to STOP
On switching the PLC from RUN to STOP or on loss of processor / module communication, the moving part decelerates and stops and the module goes into measurement mode (OFF).
NOTE: The 1RTSSCANRUN bit (%S13) is used to detect the PLC switching to STOP. It is set to 1 during the first cycle after the PLC enters RUN mode.
Change of Configuration (Reconfiguration)
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The moving part decelerates and stops.
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The channel deconfigures.
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The module tests the new configuration with the outputs in the safety position.
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If the new configuration is correct, the module goes into measurement mode (OFF).
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If the configuration is incorrect, the module signals a fault and retains the outputs in the safety position.
On power outage, the moving part stops.
On a cold start or warm restart, the channel configuration is automatically sent to the module by the processor. The module goes into measurement mode (OFF) then into the mode requested by the program.
