Rockwell-automation 1336T Function Block Prog. Manual, Series A/B Uživatelský manuál stáhnout pdf (Strana 92)

Function Block Library 4–30

1336 FORCE — 5.9 August 1995

LIMIT

BLOCK TYPE 12

decimal

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

1 2 ... 87 88 89 90 91 92 93 94 95 96 97 ... 179 180

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