Mitsubishi Electric MELSEC-Q/L Programming Manual page 182

• Function with EN/ENO
The following table shows the executing conditions and operation results.
EN
TRUE (Operation execution)
FALSE (Operation stop)
[Timing chart]
ON
EN
OFF
ON
s
OFF
ON
ENO
OFF
d
OFF
Turns d ON when EN = ON
and the falling of s .
Operation error
• No operation error occurs.
Program example
■F_TRIG(_E)
The program which turns ON (d) for one scan when bit type data input to (s) is turned from ON to OFF.
• Function without EN/ENO (F_TRIG)
[Structured ladder/FBD]
[ST]
F_TRIG_Inst(_CLK:=g_bool1, Q:=g_bool2);
• Function with EN/ENO (F_TRIG_E)
[Structured ladder/FBD]
[ST]
F_TRIG_E_Inst(EN:=X0, _CLK:=g_bool1, Q:=g_bool2, ENO:=Y20);
5 APPLICATION FUNCTIONS
180
5.10 Standard Edge Detection Function Blocks
ENO
TRUE
FALSE
ON
ON ON
OFF OFF
ON
ON ON
OFF OFF
Turns d OFF at When EN = OFF,
the next scan.
ON ON
ON ON
ON ON
d retains the previous scan output result.
(d)
Operation output value
Previous output value
ON
ON
OFF OFF
ON
ON
OFF