Table 12-3. CS21 Two Loop Cascade Controller Datapoints
Data-
point Table Module Title and Function
De-
fault
AO0 - Control Output (Secondary) (Cont)
L144 5-9 CON1 Manual Fallback Disable - 0 = always power up in manual for
Secondary Control Output; 1 = auto/manual selector
unchanged at power up.
0
L146 5-9 CON1 Hard Manual Limit - 1 = apply output limits to the final output
of the Loop 1 Auto-Manual Generator. Affects both the
manual push buttons and the controller’s result. 0 = do not
apply limits.
1
C145 5-9 CON1 Output High Limit - Sets maximum Secondary Control Output
signal value in engineering units.
100
C146 5-9 CON1 Output Low Limit - Sets minimum Secondary Control Output
signal value in engineering units.
0
C154 5-9 CON1 Output Slew Rate - It is a rate limit applied to the output
value. When configured to a non-zero value, the output from
the Auto-Selector is only allowed to change by this amount
each scan time. A zero disables output slewing. It does not
affect manual operation.
0
CON1 Control Related Datapoints (Secondary)
C142 5-9 CON1 Proportional Band - Is the percent of error required to move
the Secondary Control Output full scale for proportional
action.
100
C143 5-9 CON1 Reset Time - Is the number of minutes per repeat of integral
action for the Secondary Control Output. It is mutually
exclusive with Manual Reset.
0
C144 5-9 CON1 Rate Time - Represents the minutes Secondary Control
Output proportional action is advanced.
0
C147 5-9 CON1 Manual Reset - It determines Secondary Control Output
valve position when the controller is in Auto and the error =
0. It is mutually exclusive with Reset Time.
50
L130 5-9 CON1 Reverse Switch - 0 = Secondary Control Output
↑
if
Secondary PV
↑
; 1 = Secondary Control Output
↓
if
Secondary PV
↑
.
1
L138 5-9 CON1 Auto Enable - Controller output is from the Secondary
Control Output PID algorithm when set to 1 and the A/M
push button is in Auto.
1
C151 5-9 CON1 Controller Span - Enter a value, that when added to the
Secondary Control Lower Range value, will produce the
Secondary Control upper range value in engineering units.
100
C152 5-9 CON1 Controller Lower Range - Enter a value that represents in
engineering units the Secondary Control lower range value.
0
3 of 6
53MC5000 Process Control Station
12-8
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