Standard function blocks
310
02/16 MN05013001Z EN
SR..BD and SR..I2 are for data that the function block
transfers to register Q8 or D8 in a backwards direction when
SR..BP is activated,
Figure 148: Shift register SR..: Backwards operation in BIT mode
a
Initial situation:
– SR..EN is not activated, the function block is not active.
– SR..Q7 contains a data bit 1, a 0 is contained in the other
register fields.
b
Transfer of a data bit:
– SR..EN is activated, the function block is active.
– SR..BD has data bit 1.
– With the backwards pulse from SR..BP the register field SR..Q8
shifts the content of all register fields one place back and
accepts the 1 from SR..BD.
c
Transfer of a data bit:
– SR..EN is activated, the function block is active.
– SR..BD has data bit 0.
– With the backwards pulse from SR..BP the register field SR..Q8
shifts the content of all register fields one place back and
accepts the 0 from SR..BD.
d
Reset of the register:
– SR..EN is activated, the function block is active.
– Activating SR..RE clears the content of the register.
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
0
0
0
1
0
1
0
0
0
0
0
0
1
0
a
b
c
d
SR...BIT
Shift Register
EN
SR...BIT
Shift Register
EN
RE
BP
BD
RE
BP
BD
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
SR...BIT
Shift Register
EN
RE
BP
BD
SR...BIT
Shift Register
EN
RE
BP
BD
1
1
1
1
1
1
0
0
Summary of Contents for easySafety
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Page 80: ...Installation 76 02 16 MN05013001Z EN ...
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