9 CREATING A HARDWARE LOGIC
9.1 Main Blocks in the Hardware Logic Outline Window
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External output block
In the fifth section in the hardware logic outline window, eight external output blocks for DC output ("OUT 0" to "OUT 7") and
six external output blocks for differential output ("OUT 0_DIF" to "OUT 5_DIF") are arranged by default.
The result of the operation from the first to the fourth section in the hardware logic is output from the connector for external
devices (OUT 0 to OUT 7, OUT 0_DIF to OUT 5_DIF).
The external output block has the following functions.
• When "Logic Select" is set to "Inversion", inverted signals are output.
• A delay between signals caused by different external interface circuits can be adjusted by setting a delay time.
• When an error occurs in the CPU module, signals are output according to the output setting specified with "Error-time
Output Mode".
Input
The following shows the input of the external output block.
Variable name
Data type
Linkable block
Description
Input
Bit
• Multi function counter
• Logical operation
Executes OR processing for all signals input to the "Input" terminal.
Bit
SSI encoder
Only OUT 0_DIF and OUT 1_DIF are automatically linked with "Clock" of
the SSI encoder block.
Outline
Summary of Contents for MELSEC-L Series LD40PD01
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