Table of Contents
Advertisement
α
2 Simple Application Controllers
6.36
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 6.54: Retentive Set Reset Function Block
Function
0 0
0
S
P
O
R
R
S
R
1 ) Retentive Set Reset operation with reset priority
Power supply
(Run mode/
Stop mode)
Set pin
Reset pin
Output pin
2 ) Retentive Set Reset operation with set priority
Power supply
(Run mode/
Stop mode)
Set pin
Reset pin
Output pin
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 status after a power cut.
ON (Run mode)
OFF
ON
OFF
ON
OFF
ON
ON (Run mode)
OFF
ON
OFF
ON
OFF
ON
Description
Function Blocks 6
OFF (Stop mode)
Remember
Output Signal
status after a
power cut
OFF (Stop mode)
Remember
Output Signal
status after a
power cut
6 - 104
Advertisement
Table of Contents
