Omron C200HX Operation Manual page 407

I/O Response Time
Input
point
Input ON delay
Input
Master
bit
CPU Unit
processing
One-to-one link
communications
Slave
6-4-6 Interrupt Response Times
Input Interrupts
3. Communications are completed just after the slave executes communica-
tions servicing.
Instruction Instruction
execution execution
Master to Slave to
Slave Master
CPU Unit
processing
The maximum I/O response time is as follows:
Input ON delay:
Master cycle time:
Transmission time:
Slave cycle time:
+ Output ON delay:
Maximum I/O response time:
The response time from the time an interrupt input is received until the interrupt
subroutine execution has been completed is described next.
External interrupt input signal
Internal interrupt signal
Interrupt subroutine execution
t1 = ON delay of Interrupt Input Unit
t2 = Software interrupt response time
Total interrupt response time = t1 + t2
The ON delay of Interrupt Input Unit is 0.2 ms or less.
The software interrupt response time depends on the interrupt response param-
eter setting in DM 6620 of the PC Setup. If the DM 6620 is set for the C200H-
compatible mode (0000), the software interrupt response time is less than
10 ms. If the DM 6620 is set for the C200HX/HG/HE mode (1xxx), the software
interrupt response time is less than 1 ms. The total interrupt response time is
thus as shown in the following table.
Interrupt response setting
C200H-compatible mode
(Normal response)
C200HS mode
(High-speed response)
I/O refresh
Overseeing, communica-
tions, etc.
Cycle time
Instruction
execution
Master to
Slave
Instruction Instruction
execution execution
Output point
8 ms
10 ms × 2
39 ms × 3
15 ms × 2
10 ms
185 ms
t1
Total interrupt response time
0.2 ms + (Total of following: Special I/O
processing time, Remote I/O processing time,
Host Link servicing time, instruction execution)
1.2 ms or less
Section 6-4
Instruction
execution
Output ON
delay
t2
389