Retentive Set Reset Block - Mitsubishi Electric a2 Series Programming Manual

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2 Simple Application Controllers
6.34

Retentive Set Reset Block

The function block operates is identical in operational procedure as the Set/ Reset function
block, however, a retentive option has been provided for the user to hold the state of the output
after the power has been turned OFF.
Table 6.48: Retentive Set Reset Function Block
Function
0 0 0
S P O
R
R S R
1 ) Retentive Set Reset operation with reset priority
Set pin
Reset pin
Output pin
Power supply
(Run mode/
Stop mode)
2 ) Retentive Set Reset operation with set priority
Set pin
Reset pin
Output pin
Power supply
(Run mode/
Stop mode)
Set Item
S Indicates the input is a set pin
R Indicates the input is a reset pin
1) Priority
FB a) Set
b) Reset
The output of the function block operates in either an ON or OFF
state.
1) Set the output ON until the reset pin is ON.
Output
2) Decides the status of the output depending which input pin has
priority.
3) Remember Output Signal after a Power Cut.
OFF ON
OFF ON
OFF ON OFF
ON (Run mode)
ON (Run mode)
Description
*
OFF
(Stop mode)
*
OFF
(Stop mode)
Function Blocks 6
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