Omron Sysmac CP1H, Operation Manual

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Analog I/O Units Section 7-4
Set Data of Analog Outputs
• The Analog I/O Unit will not start converting analog I/O values until the set
data has been written.
• Before range code is written, 0 V or 0 mA will be output in the 0 to 10 V,
−
10 to +10 V, and 0 to 20 mA ranges, and 1 V or 4 mA will be output in
the 1 to 5 V 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 code range, turn
the CPU Unit OFF then ON again.
Averaging
Set whether averaging is to be used for set data. When the averaging bit is set
to 1, the average (moving average) for the past eight inputs is output as con-
version data.
Reading Analog Input Converted Values
Read the conversion value storage area with the ladder program. With word m
as the last input word allocated to the CPU Unit or an already-connected
Expansion Unit, the A/D conversion data will be output to the following words
m+1 to m+4.
Writing Analog Output Converted Values
The ladder program can be used to write conversion data to the output words.
The output word start from “n+1” where “n” is the last output word allocated to
the CPU Unit, or previous Expansion Unit or Expansion I/O Unit.
Startup Operation
After power is turned ON, it will require two cycle times plus approximately
50ms before the first conversion data is output.
Analog input data will be 0000 until the first conversion data is stored in the
input words.
Range Code Analog input range
00
−
10 to 10 V
01 0 to 10 V
10 1 to 5 V (4 to 20 mA)
11 0 to 5 V (0 to 20 mA)
Range Code Analog output range
000
−
10 to 10 V
001 0 to 10 V
010 1 to 5 V
011 0 to 20 mA
100 4 to 20 mA
Value Enable
Enable Bit
0 : Disable channel
1 : Enable channel
7 6 0 1 2 3 4 5
DA Range Code Enable DA Range Code
DA Range Code
000 :
−
10 to 10V
001 : 0 to 10V
010 : 1 to 5V
011 : 0 to 20mA
100 : 4 to 20mA