Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 92)

Function Block Library 4–30
1336 FORCE — 5.9 August 1995
LIMIT
BLOCK TYPE 12 decimal 0C hexadecimal
Limit
ID = Exec =
Output
NODE 0 Input 1
NODE 1
NODE 5
Min Lim NODE 4
Max Lim NODE 3
Max Val
NODE 2 Min Val
DEFINITION
Limits an input Input 1 to the programmed maximum Max Val and
minimum Min Val values.
INPUTS
Input 1 — A signed integer that is limited.
Max Val — A signed integer that represents a maximum input value.
Min Val — A signed integer that represents a minimum input value.
OUTPUTS
Max Lim — High limit flag that is true when Input 1 > Max Val.
Min Lim — Low limit flag that is true when Input 1 < Min Val.
Output — A signed integer that results from limiting Input 1.
FUNCTION
1. If Input 1 < Min Val, then Output = Min Val and Min Lim is
true.
2. If Input 1 > Max Val, then Output = Max Val and Max Lim is
true.
3. If Input 1 < Max Val and > Min Val, then both are false and
Output = Input 1.
PARAMETERS DATA TYPE LINKABLE DEFAULT VALUE RANGE
Input 1 Signed Integer Yes 0
±
32767
Max Val Signed Integer Yes 0
±
32767
Min Val Signed Integer Yes 0
±
32767
Max Lim Logic Output No — True/False
Min Lim Logic Output No — True/False
Output Signed Integer No —
±
32767
EXAMPLES EXAMPLE 1 EXAMPLE 2 EXAMPLE 3
Input 1 5 11 5
Max Val 10 10 – 10
Min Val – 25 – 25 10
Max Lim False True True
Min Lim False False False
Output 5 10 – 10