Programming

Appendix A

Motion Control Module I/O Response Time

Minimum I/O Response Time (General-purpose I/O 0 to 3)

The I/O response time is shortest when the input refresh is executed immediately after a Motion Control Mod- ule detects an input, as shown in the figure below.

The minimum I/O response time is the total of the Input ON delay, the Cycle time, and the Output ON delay.

Input contact

Input bit

Input ON delay

I/O refresh

Overseeing processing

Cycle time

Internal processing

 

 

 

Instruction execution

 

 

Instruction execution

 

Cyclic output refresh

Output ON delay

Output contact

Cyclic Output Refresh Time

Minimum I/O response time = 0.03 + 0.194 + 0.1 = 0.324 (ms)

Note Input interrupts and the IORF(097) instruction can be used to obtain a faster response (100 s typical).

Maximum I/O Response Time

The I/O response time is longest when a Motion Control Module detects an input immediately after input refresh has been executed, as shown in the figure below. The response time will be one cycle longer than for the minimum I/O response time.

The maximum I/O response time is the total of the Input ON delay, (the Cycle time 2), and the Output ON delay.

Input contact

Input ON delay

Input bit

I/O refresh

Overseeing processing

 

 

 

Cycle time

Internal processing

Instruction execution

Instruction execution

Instruction execution

Cyclic output refresh

Output ON delay

Output contact

Cyclic Output Refresh Time

Maximum I/O response time = 0.03 + 0.388 + 0.1 = 0.518 (ms)

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Omron FQM1-MMP21, FQM1-CM001 Motion Control Module I/O Response Time, Minimum I/O Response Time General-purpose I/O 0 to