Changing The Manipulated Variable (4 And 8-Channel Models) - Omron G3ZA - MANUAL 2 User Manual

Changing the Manipulated Variable (4 and 8-channel Models)

4-10 Changing the Manipulated Variable (4 and 8-channel
Models)
1,2,3...
Using Manipulated
Variable Calculations
Note
50
Manipulated variable (MV)
100%
0
Soft Increase Soft Decrease
Time
The Variable Area Write command is used to change the manipulated vari-
able. The manipulated variable is 0.0% by default when the power supplied is
turned ON, but this value can be changed to a non-zero value with the Manip-
ulated Variable Save operation command.
Example: Changing the manipulated variable to 20.0% when the power is
turned ON
1. Set the manipulated variables to 20.0% for all channels with a Variable
Area Write command.
2. Execute the Manipulated Variable Save operation command.
3. The manipulated variables will be set to 20.0% the next time power is
turned ON.
Manipulated variable calculations can be used to set a channel's control vari-
able based on another channel's manipulated variable. Set the control vari-
able with the channel 1 to 8 source channel, channel 1 to 8 slope, and
channel 1 to 8 offset settings.
The following calculation method and set values can be used.
Control variable = (Source channel's MV
The following table shows the default values, which will output 100% of each
channel's MV as the control variable.
Variable type Parameter name
81/C1 Channel 1 to 8 source channel Channel 1 to 8 (Set
Channel 1 to 8 slope
Channel 1 to 8 offset
(1) If the control variable exceeds the range of 0% to 100%, it will be clamped
at 0% or 100%.
(2) The control variable can be read using the Variable Area Read command.
Example: Setting the Other Channels' Control Variables Based on Channel
2's MV
The following values are set for each parameter with Variable Area Write com-
mands.
Channel
Manipulated variable 0.0
Source channel 2
Time
Time
×
Slope ÷ 100.0) + Offset
Setting range
the channel to use
as the source for
calculation.)
0.0 to 400.0%
−
400.0 to 400.0%
1 2 3
20.0 0.0
2 2
Section 4-10
Default
1 to 8
100.0
0.0
4
0.0
2