Техническая Спецификация для Siemens SPS starter kit 6ED1057-3BA00-0AA8 12 Vdc, 24 Vdc 6ED1057-3BA00-0AA8
Модели
6ED1057-3BA00-0AA8
Reference material
5.3 Special functions
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Operating Instructions, 06/2014
Operating Instructions, 06/2014
307
5.3.6
Miscellaneous
5.3.6.1
Latching relay
Short description
A signal at input S sets output Q. A signal at input R resets output Q.
Connection
Description
Input S
Set output Q with a signal at input S (Set).
Input R
Reset output Q with a signal at input R (Reset). Output Q is reset if S and R
are both set (reset has priority over set).
Parameter
Retentivity set (on) = the status is retentive in memory.
Output Q
Q is set with a signal at input S and remains set until it is reset with signal at
input R.
Timing diagram
Description of the function
The latching relay represents a simple binary memory logic. The output value depends on
the input states and the previous status at the output.
Logic table of the latching relay:
Logic table of the latching relay:
S
R
Q
Remark
0
0
x
Status unchanged
0
1
0
Reset
1
0
1
Set
1
1
0
Reset
When retentivity is enabled, the output signal corresponds with the signal status prior to the