Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

2 Instruction Descriptions
Manipulated Variable MV Compared with Manipulated Variable for
Heating Control MV_Heat and Manipulated Variable for Cooling
Control MV_Cool
MV is the manipulated variable for an instruction like the PIDAT instruction that uses either a heating
device or a cooling device to control the temperature. The PIDAT_HeatCool instruction also calculates
MV in the same way as the PIDAT instruction. MV is then distributed to the manipulated variable for
heating and the manipulated variable for cooling. The following figure shows conceptually how the
value of MV is distributed to MV_Heat and MV_Cool. The value of MV_Cool is the absolute value of MV
when MV is negative.
MV
0
The above figure is conceptual. The actual values of MV_Heat and MV_Cool are not exactly the nega-
tive and positive values of MV. The values of MV_Heat and MV_Cool are calculated from special for-
mulas based on the value of MV.
2-694
MV
PV
SP
MV_Heat
MV_Cool
The value of MV
is distributed to
MV_Heat and
MV_Cool.
0

NY-series Instructions Reference Manual (W560)

MV_Heat MV_Cool
SP
PV