In addition to the process controller status word, bit 8 of the device status word,
P 702[0] - MON_State, will be set when the setpoint is reached. P 2679[0] - CON_
PRC_RefReached can be used to configure the “Reference value attained” window
for this purpose. Bit 8 will be set to TRUE if the process controller’s deviation is less
than 50% of the configured “Reference value attained” window.
7.10.2.2 Reference values
The process control circuit setpoint can be selected via pre-defined setpoint sources.
P 2683[0] - CON_PRC_REFSEL can be used to select these setpoint sources.
Setting
Name
Description
0
USER
User input via
CON_PRC_REFVAL_
User - P2684
1
RPDC
Setpoint for rack and pinion control.
Automatic input of transmitted RPDC
current value
2
ISA00
Setpoint via analog input ISA00. Analog
input ISA00 (CON_ANA_Isaf[0])
3
ISA01
Setpoint via analog input ISA01. Analog
input ISA01 (CON_ANA_Isaf[1])
4
IEA02
Analog input IEA02.
5
IEA03
Analog input IEA03.
Table 7.43: Selector for reference value source (P 2683[0])
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
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7 Control
Setting
Name
Description
6
P_REF
Reference pressure.
Any analog input (function selector for
analog inputs set to a value of -14).
7
P2981
Mappable parameter P-2981 *
8
P2982
Mappable parameter P-2982 *
9
P2983
Mappable parameter P-2983 *
10
P2984
Mappable parameter P-2984 *
* See Section "Mapping parameters and scope values" on page 169
Table 7.43: Selector for reference value source (P 2683[0]) (continue)
NOTE
If the target value source is selected, the respective input must also have
a function assigned to it.
see also section "Function selectors" on page 304
Once the setpoint source is selected, the process controller setpoint can be set with
P 2666[0] - CON_PRC_REFVAL. This setpoint can then be scaled further with
P 2667[0] - CON_PRC_REFSCALE in order, for example, to incorporate decimal
places and/or unit conversions.
7.10.2.3 Actual values
The process control circuit actual value can be selected via a number of pre-defined
actual value sources. P 2668[0] - CON_PRC_ACTSEL can be used to select these
actual value sources.
