Omron CJ1W-AD041-V1, Operation Manual

Page: 284 / 427

261
Analog Output Functions and Operating Procedures Section 6-7
3. When a fatal error occurs at the PLC.
4. When there is an input disconnection during a ratio conversion.
When the operation mode for the CPU Unit is changed from RUN or MONI-
TOR mode to PROGRAM mode, or when the power is turned ON, the Conver-
sion Enable Bits will all turn OFF. The output status at this time depends on
the output hold function.
In this example, conversion is begun for analog output number 1. (The unit
number is 0.)
6-7-2 Output Hold Function
The Analog I/O Unit stops conversion under the following circumstances and
outputs the value set by the output hold function.
1,2,3... 1. When the Conversion Enable Bit is OFF. Refer to Starting and Stopping
Conversion on page 260.
2. In adjustment mode, when something other than the output number is out-
put during adjustment. Refer to
6-9-2 Input Offset and Gain Adjustment
Procedures .
3. When there is an output setting error. Refer to 6-7-3 Output Setting Errors .
4. When a fatal error occurs at the PLC.
5. When there is an input disconnection during ratio conversion.
6. When there is an I/O bus error.
7. When the CPU Unit is in LOAD OFF status.
8. When there is a WDT (watchdog timer) error in the CPU Unit.
CLR, HOLD, or MAX can be selected for the output status when conversion is
stopped.
The above values may fluctuate if offset/gain adjustment has been applied.
200000
Input condition
Conversion
begins for
output
number 1.
Output signal
range
CLR HOLD MAX
0 to 10 V –0.5 V (Min. –5%
of full scale) Voltage that was output
just prior to stop. 10.5 V (Max. +5% of
full scale)
–10 to 10 V 0.0 V Voltage that was output
just prior to stop. 11.0 V (Max. +5% of
full scale)
1 to 5 V 0.8 V (Min. –5%
of full scale) Voltage that was output
just prior to stop. 5.2 V (Max. +5% of
full scale)
0 to 5 V –0.25 V (Min.
–5% of full scale) Voltage that was output
just prior to stop. 5.25 V (Max. +5% of
full scale)