Standard Bistable Function Blocks (Reset-Dominant) - Mitsubishi Electric MELSEC-Q/L Programming Manual

Standard bistable function blocks (Reset-dominant)

RS(_E)
High
Basic Process
Redundant Universal
performance
Structured ladder/FBD
RS_E
EN ENO
s1 d
s2
The following function(s) can go in the dotted squares.
RS, RS_E
■Argument
Input/output Name
argument
Input argument EN
s1(_S)
s2(_R1)
Output argument ENO
d(Q1)
Processing details
■Operation processing
Sets (d) when (s1) is turned ON, and resets (d) when (s2) is turned ON. (d) is not set even when (s1) is turned ON while (s2)
is ON.
■Operation result
• Function without EN/ENO
An operation is executed and the operation value is output from (d).
[Timing chart]
ON ON
s1
OFF
ON ON
s2
OFF OFF OFF
ON ON
d
OFF OFF
Turns d ON when s1 = ON Turns
and s2 = OFF.
LCPU
ST
RS_E (EN, s1, s2, ENO, d);
Description
Executing condition (TRUE: Execution, FALSE:
Stop)
Input
Execution result (TRUE: Normal, FALSE: Error or
stop)
Output
ON ON
ON ON ON
ON
OFF OFF
d OFF when = ON.
s2
Data type
Bit
Bit
Bit
Bit
ON ON
ON ON
OFF OFF
ON ON ON
OFF OFF
5.9 Standard Bistable Function Blocks
5 APPLICATION FUNCTIONS
5
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