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CHAPTER 8 FUNCTION
8
8.9 Shift Function
8.9 Shift Function
Using this function, the D/A converter module outputs the converted digital value with the shifting set value added, in
analog.
When the shifting set value is changed, it is reflected to the analog output value in real time. Therefore, fine adjustment
can be easily performed when the system starts.
(1) Operation of the shift function
The shifting set value is added to a digital value, and the added digital value is output in analog.
When the scaling function is used, the scale conversion is executed after the addition by the shift function.
The default value of the shifting set value is "0". If some value is set to the shifting set value, the shifting set value
is added regardless of the status change (OFF ON OFF) of Initial data setting request flag (RY9).
(2) Setting procedure
1. Set "Parameter write" for "Method selection".
"CC IE Field Configuration" window Select a D/A converter module in "List of stations".
[CC IE Field Configuration] [Online] [Parameter Processing of Slave Station]
2. Set "CH D/A conversion enable/disable setting" to "0: Enable".
5
0 12000
0
11990
Digital value
Analog output voltage (V)
The shifting set
value is added.
-10
1) Digital value
(before adjustment)
-10 0
11990 5
Digital value
(before adjustment)
Output voltage (V)
00
12000 5
Digital value + Shifting set value
(after adjustment)
Output voltage (V)
2) Digital value + Shifting set value
(after adjustment)
2) Digital value +
Shifting set value
(after adjustment)
CH Shifting set value
(RWw6 to RWw9)
+10
1) Digital value
(before adjustment)