Set/Reset Block - Mitsubishi Electric MELSEC-L Series LD40PD01 User Manual

Set/reset block

Multi function
In the fifth section in the multi function counter block detail window, set/reset blocks are arranged by default. For a 16-bit
counter, two set/reset blocks ("Set/Reset_0" and "Set/Reset_1") are arranged. For a 32-bit counter, one set/reset block is
arranged.
The signal input to the "Set" terminal is used as a trigger to output High fixed signals or the signal input to the "Reset" terminal
is used as a trigger to output Low fixed signals.
Input
The following table shows the inputs of the set/reset block.
Variable name Data type
Set Bit
Reset Bit
• When both the "Set" terminal status and "Reset" terminal status turn to High at the same time, the "Reset"
terminal becomes valid.
■Link of the set/reset block
• The set/reset block in a 16-bit counter can be linked to the following comparison blocks.
Set/reset block
"Set/Reset_0"
"Set/Reset_1"
Output
The following table shows the output of the set/reset block.
Variable name Data type
Output Bit
Linkable block Valid range
• Input signal event 0, 1
detection
• Comparison
• Input signal event 0, 1
detection
• Comparison
Comparison block
"Compare_0"
"Compare_1"
Linkable block Output value
Output 0, 1
Description
Outputs the High fixed signal when an input signal is
detected. Even if the input signal turns to Low, output
continues until a signal is input to "Reset".
Outputs the Low fixed signal when an input signal is
detected.
Description
Outputs High fixed or Low fixed signals.
9 CREATING A HARDWARE LOGIC
9.2 Multi Function Counter Block
9
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