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25 HIGH-SPEED INPUT/OUTPUT FUNCTION
25.1 High-speed Counter Function
High-speed counter parameters
High-speed counter parameters are explained below.
High-speed counter parameters are set by GX Works3.
Outline of parameters
High-speed counter settings, high-speed comparison table, multiple point output high-speed comparison table and input
response time are set by parameters.
The primary items that can be set by parameters are as follows.
• Basic settings
• High-speed comparison table setting
• Multiple point output high-speed table setting
• Input response time setting
Parameter setting
High-speed counter parameter setting method is explained below.
For parameter setting of each operation, refer to the following.
• For high-speed counters (normal mode), refer to Page 249 High-speed counter (normal mode).
• For high-speed counter (pulse density measurement mode), refer to Page 252 High-speed counter (pulse density
measurement mode).
• For high-speed counter (rotational speed measurement mode), refer to Page 255 High-speed counter (rotational
speed measurement mode).
• For high-speed comparison table, refer to Page 257 High-speed comparison table.
• For multiple point output, high-speed comparison tables, refer to Page 260 Multiple point output, high-speed
comparison tables.
• For input response time, refer to Page 325 General-purpose Input Functions.
Parameters are enabled when the CPU module is powered ON or after a reset. In addition, operations
different from the parameter settings are possible by transferring values to special relays and special registers
while changing these values in the program.
For details concerning special relays and specials registers for high-speed counters, refer to Page 685
Special Relay List, Page 719 Special Register List.
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