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59
4. CONFIGURATION
80703B_MHW_2850T/3850T_02-2019_ENG
Logic Functions
Diagram
Formal language
Description
Inputs
Outputs
Timer
no.
type
no.
type
Out = (A & B) | (C & D)
Out = TRUE if A and B equal to
TRUE or C and D equal to TRUE (7)
4
Only
digital variables ar
e admitted such as:
•
Digital inputs/outputs
•
Merker
•
Retain Merker
•
System functions (*)
1
Only
digital variables ar
e admitted such as:
•
Digital outputs
•
Merker
•
Retain Merker
Ye
s
Out = (A | B) & (C | D)
Out = TRUE if A and B equal to
TRUE or C and D equal to TRUE (8)
4
Only
digital variables ar
e admitted such as:
•
Digital inputs/outputs
•
Merker
•
Retain Merker
•
System functions (*)
1
Only
digital variables ar
e admitted such as:
•
Digital outputs
•
Merker
•
Retain Merker
Ye
s
& = AND, | = OR
(*)
For the list of functions, see paragraph “13.1. System variables” on page 161.
Out = (A & B) | (C & D) (7)
A
B
C
D
OUT
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
TRUE
FALSE
FALSE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
TRUE
Out = (A | B) & (C | D) (8)
A
B
C
D
OUT
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
TRUE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
TRUE
TRUE
FALSE
TRUE
TRUE
FALSE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
FALSE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
FALSE
FALSE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
TRUE
Flip Flop SR (3)
Flip Flop RS (4)
Sear
ching for the rising edge (5)
Sear
ching for the trailing edge (6)
A
B
OUT
A
B
OUT
A curr
ent
A pr
evious
OUT
A curr
ent
A pr
evious
OUT
FALSE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
TRUE
FALSE
FALSE
TRUE
FALSE
TRUE
TRUE
FALSE
FALSE
TRUE
TRUE
FALSE
TRUE
TRUE
FALSE
FALSE
FALSE
=
FALSE
FALSE
=
FALSE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
= : the value does not change
= : the value does not change
Out = A | B | C | D (1)
A
B
C
D
OUT
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
TRUE
TRUE
FALSE
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
TRUE
FALSE
TRUE
TRUE
FALSE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
FALSE
FALSE
TRUE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
FALSE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
TRUE
Out = A & B & C & D (2)
A
B
C
D
OUT
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
TRUE
FALSE
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
TRUE
FALSE
FALSE
FALSE
TRUE
TRUE
TRUE
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
FALSE
TRUE
TRUE
FALSE
TRUE
TRUE
FALSE
FALSE
FALSE
TRUE
TRUE
FALSE
TRUE
FALSE
TRUE
TRUE
TRUE
FALSE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
Summary of Contents for 2850T
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