Mitsubishi Electric MELSEC-Q/L Programming Manual page 180

• 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
ON
s
OFF
ENO
OFF
ON
d
OFF
Turns d ON when Turns
EN = ON and the
rising of s .
Operation error
• No operation error occurs.
Program example
■R_TRIG(_E)
The program which turns ON (d) for one scan when bit type data input to (s) is turned from OFF to ON.
• Function without EN/ENO (R_TRIG)
[Structured ladder/FBD]
[ST]
R_TRIG_Inst(_CLK:=g_bool1, Q:=g_bool2);
• Function with EN/ENO (R_TRIG_E)
[Structured ladder/FBD]
[ST]
R_TRIG_E_Inst(EN:=X0, _CLK:=g_bool1, Q:=g_bool2, ENO:=Y20);
5 APPLICATION FUNCTIONS
178
5.10 Standard Edge Detection Function Blocks
ENO
TRUE
FALSE
d OFF at the next scan.
ON ON
ON ON
ON ON
OFF
When EN = OFF, d retains the previous scan output result.
(d)
Operation output value
Previous output value
ON
ON
ON
OFF