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8 Using Expansion Units and Expansion I/O Units
CP1E CPU Unit Hardware User’s Manual(W479)
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Create the ladder program.
(1) Allocating Output Words
Four output words (n+1 to n+4) are allocated to the Analog Output Unit starting from the
next word following the last word allocated to the CPU Unit or previous Expansion Unit or
Expansion I/O Unit. For CP1W-DA021, two output words (n+1, n+2) are allocated.
(2) Writing Set Data
Write the output use and the range code to words n+1 and n+2. For CP1W-DA021, only
word n+1 can be used. The D/A conversion will start when the set data is transferred from
the CPU Unit to the Analog Output Unit.
•
Set Data
•
The Analog Output Unit will not start converting analog output values until the set data
has been written.
•
Before the range code is written, 0 V or 0 mA will be output for the 0 to 10V, -10 to 10V,
or 0 to 20 mA ranges, and 1 V or 4 mA will be output for the 1 to 5V and 4 to 20 mA
ranges.
•
Once the range code has been set, it is not possible to be changed while power is being
supplied to the CPU Unit. To change the range code, turn the CPU Unit OFF then ON
again.
Words n+1 to n+4
CP1W-DA041/DA042
Analog Output Unit
15
1 0
0
0
0
0
0
8
7
6
5
4
3
2
1
0
Wd n+1
15
1 0 0
0
0
0
0
8
7
6
5
4
3
2
1
0
0
0
Analog output 2
Analog output 1
Analog output 4
Analog output 3
Wd n+2
Even if analog outputs
are not used, bits 15 in
words n+1 and n+2
must be set to 1.
Even if analog outputs
are not used, bits 15 in
words n+1 and n+2
must be set to 1.
0
1
Range code
Analog output range
−
10 to 10 V
0 to 10 V
1 to 5 V
0 to 20 mA
4 to 20 mA
000
001
010
011
100
Output use
No
Yes
Summary of Contents for CP1E-E**D Series
Page 3: ......
Page 66: ...2 Basic System Configuration and Devices 2 22 CP1E CPU Unit Hardware User s Manual W479...
Page 318: ...Appendices A 54 CP1E CPU Unit Hardware User s Manual W479...
Page 322: ...Index 4 CP1E CPU Unit Hardware User s Manual W479...
Page 324: ...Revision 2 CP1E CPU Unit Hardware User s Manual W479...
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