Table 2-65 Up/Down Configuration Parameters - Honeywell UMC800 Reference Manual

Function Blocks
2.76 UPDN Function Block,
Block Properties
Double click on the function block to access the
function block properties dialog box.
Block Order (Read Only)
You can change the assigned execution order
number by selecting "Execution Order" in the
"Configure" menu and arrange the order to suit
your control strategy.
Configuration Parameters
You must configure the UPDN function Block
parameters to the desired value or selection that
matches your operating requirements.
Table 2-65 describes the parameters and the
value or selection.
Properties Group
Local Preset
Presets
Example
Figure 2-80 shows a Function Block Diagram using a UPDN function block. This example uses a Totalizer function block as a
retentive timer. If a fixed input of 1 is provided to the block using a Numeric Constant, the totalizer will time up to 1 at the input
rate selected (per sec, per min., per hr, or per day). For example, if the "per hr" rate were selected, the output would be 1.0 after
1 hour, 2.0 after 2 hours, etc, up to the Preset value.
A counter is shown to count the number of pump cycles (On to OFF transitions).
The P4-RESET Digital Variable is used to reset the timer and counter
232
continued

Table 2-65 UP/DOWN Configuration Parameters

Parameter Index#
0
1
Figure 2-80 UPDN Function Block Example
Function Block Reference Guide
Parameter Description
Local Preset
On selects remote preset
Value or Selection
1 to 99999
Click on Box to select
3/99