Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 194)

7-20
M-4659
When PV/SP Computation Function is ON
Enter PV or SP related settings.
When the control mode is analog retransmission, the setting menu for that mode is
displayed. See the next page.
PV/SP Computation Function
Select whether to enter settings for PV, PV1, PV2, or SP. Enter PV if the control mode is
single loop control or cascade control, or PV1, PV2 for 2 input switching control. SP can
be entered when the Setup tab’s Internal Loop > [Remote Setting] is set to [Remote].
Mode
Select ON or OFF.
ON: Activates the equation.
OFF: Assigns the following control input channels to the equation.
Loop 1
Loop 2
Loop 3
Loop 4
Loop 5
Loop6
PV
CI01
CI04
CI06
CI09
CI03
CI08
SP
CI02
CI05
CI07
CI10
CI01
CI01
PV(1)
CI01
CI04
CI06
CI09
SP
CI02
CI07
PV1
CI01
CI04
CI06
CI09
PV2
CI02
CI05
CI07
CI10
SP
CI03
CI01
CI08
CI01
PV1
CI01
CI04
CI06
CI09
PV2
CI02
CI05
CI07
CI10
SP
CI01
CI01
CI01
CI01
Control
mode
Single loop
control
Cascade
control
2 input switching
control (4 loops)
2 input switching
control (6 loops)
Equation
Enter the PV/SP equation. If the mode is OFF, the equation cannot be entered.
PV range (PV or PV1)
Set the maximum value, minimum value, decimal place (0–4), and units using 6
alphanumeric characters or less.
Set the max. and min. values between -30000 and 30000 such that max. > min., and
max. - min. ≤ 30000.
PV1 can be set even if the mode is OFF.
Input Switching (PV1)
Set within the PV range. Set the decimal place (0–4), upper limit (U) and lower limit
(L). When setting [Method] to [Range] in [Control Action] under the Setup tab’s Internal
Loop item, and when setting the upper limit (U), lower limit (L), and [Method] to [PV High],
only the upper limit value is set. If you set [Method] to [Signal], the PV Input Switching
setting is not available. This can be set even if the [Mode] is OFF.
7.4 Control Function General Settings