Siemens 353, Руководство пользователя

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UM353-1B Function Blocks
April 2012 3-91
3.2.91 TSW_ - Transfer Switch
TSW_ function blocks select one of two analog input
signals as the output signal. Input A becomes the output
when input SC is low (0) and input B will be the output
when input SC goes high (1).
Unconfigured inputs will default to SC=low(0), A=0.0,
B=100.0.
BLOCK DIAGRAM
A
O1
SC
B
O utput 1
Input A
Input B
S witch C ommand
X03135S0
3.2.92 XOR_ - Exclusive OR Logic
XOR_
function blocks perform a logical exclusive OR
function on all three inputs. An unused input will cause the
block to function as a two input XOR. The XOR output
will be low (0) when all configured inputs are low (0) or
when all configured inputs are high (1).
A
O1
B
C XOR
XOR TRUTH TABLE
A B
C
O utput 1
0 0 0
0 0
0
0
0
0 0
0
0
1
1
1
1
1
1
1
1
1
1
1 1
1
0
0
1
1
1
1
1
X03136S0
Input A
TRANSFER SWITCH
O1
O utput 1
TRANSFER SWITCH
TSW_ ESN = 000
A
E S N
E xec. S eq. N o.
(H)
................. 001 to 250
C T U
P
N I
INPUT B
(H)
.......... loop tag.block tag.output ( null )
S witch C ommand
SC
B T U P N I
INPUT SC
(H)
........
loop tag.block tag.output ( null )
Input B
B
S
A T U P N I
INPUT A
(H)
..........
loop tag.block tag.output ( null )
Input
A
XOR
O1 O utput 1 XOR
XOR_
ESN = 000
A
E S N E xec. S eq. N o.
(H)
................. 001 to 250
C T U P N I
INPUT B
(H)
..........
loop tag.block tag.output ( null )
Input B B
B T U P N I
INPUT C
(H)
..........
loop tag.block tag.output ( null )
Input C C
A T U P N I
INPUT A
(H)
..........
loop tag.block tag.output ( null )