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Analog Output Functions and Operating Procedures Section 4-6
Example 2 In this example, multiple set values are written. (The unit number is #0.)
Note If the set value has been written outside the specified range, an output setting
error will occur, and the value set by the output hold function will be output.
4-6-2 Starting and Stopping Conversion
To begin analog output conversion, turn ON the corresponding Conversion
Enable Bit (word n, bits 00 to 07 for the CS1W-DA08V and CS1W-DA08C;
word n, bits 00 to 03 for the CS1W-DA041) from the user’s program.
For the CIO word addresses, n = CIO 2000 + (unit number x 10).
The analog output when conversion is stopped will differ depending on the
output signal range setting and output hold setting. Refer to 4-6-1 Output Set-
tings and Conversions and 4-6-3 Output Hold Function.
Conversion will not begin under the following conditions even if the Conver-
sion Enable Bit is turned ON. Refer to 4-6-3 Output Hold Function.
1,2,3... 1. In adjustment mode, when something other than the output number is out-
put during adjustment.
2. When there is an output setting error.
3. When a fatal error occurs at the PLC.
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.)
XFER(070)
#0004
D00001
2001
Input condition
The set values stored in D 00001
to D 00004 are written to CIO words
2001 to 2004 (outputs 1 to 4).
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Bit
Output 2
Output 1
Analog conversion is executed while
these bits are ON. When the bits are
turned OFF, the conversion is stopped
and the output data is held.
Word n
Output 4
Output 3
Output 6
Output 5
Output 8
Output 7
200000
Input condition
Conversion
begins for
output
number 1.
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