Omron SYSMAC CS Series Operation Manual page 146

Supplementary Explanation of Functions
Output Hold when CPU Unit Error Occurs
In the following cases, the CS1W-PMV01/PMV02 Isolated-type Analog Output Unit will hold either a specified
preset value or the analog output value prior to the error for output when the CPU Unit is restored to normal
operation.
• A fatal error (including user-defined FALS execution) occurs
• A CPU error occurs
• A load break occurs
When the CPU Unit is restored to normal operation, the output value in the CIO Area will be output.
Note If a CPU error occurs while the output rate-of-change limit function is operating, the output hold function
will operate as follows:
• If previous value hold has been specified, then the value prior to the CPU error will be held for output.
• When preset value hold has been specified, the output rate-of-change limit will remain in effect even during
the change to the preset value, and the rate of change will be limited.
Analog output value
Preset value
Applicable Unit: CS1W-PMV01/PMV02 Isolated-type Analog Output Unit.
Inrush Input Limit Function
The inrush input limit function will not operate if the process value is already greater than 2% when the power
supply to the PC is turned ON. The inrush input limit function will operate only when the process value rises
above 2% from less than 2% at startup.
Applicable Units: CS1WPTR01 Power Transducer Input Unit, CS1W-PTR02 Analog Input Unit
Analog output value
No output rate-of-change limit
CPU error occurs here.
No rate-of-change limit
CPU error occurs.
Process value
No CPU error occurs.
Previous value held
when CPU error occurs
Time
Previous value held
when CPU error occurs
No CPU error occurs.
Rate-of-change limit still enabled.
Time
Operation of inrush input limit function
Time
Appendix A
Rate-of-change
limit in effect
Rate-of-change
limit enabled
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