Omron CQM1H - PROGRAM User Manual

496
Cycle Time Section 7-3
High-speed timers: The time shown below is required, depending on (a) the
number of timers used with TIMH(15) and (b) the number
of high-speed timers active at that time. (The number of
high-speed timers is set in the PC Setup, DM 6629. The
default setting is 16.)
0
≤ Standby time ≤ 40 + 3 × (a + b) µs
Up to 40
µs can be required even when no high-speed
timers are used.
Generation and clearing of non-fatal errors:
When a non-fatal error is generated and the error contents
are registered at the CQM1H, or when an error is being
cleared, interrupts will be masked for a maximum of 75
µs
until the processing has been completed.
Online editing: Interrupts will be masked for a maximum of 250 ms when
online editing is executed during operation.
Pulse output based on SPED(64) may also be affected by interrupt process-
ing, thus causing output timing to vary.
Example Calculation This example shows the interrupt response time (i.e., the time from when the
interrupt input turns ON until the start of the interrupt processing routine)
when input interrupts are used under the conditions shown below.
Number of high-speed timers: 0 (No high-speed timers started)
Online edit: Not used
Input refresh at interrupt: No
Minimum Response Time
Interrupt input ON delay: 100
µs
Interrupt mask standby time: 0
µs
+ Change-to-interrupt processing: 30
µs
Minimum response time: 130
µs
Maximum Response Time
Interrupt input ON delay: 100
µs
Interrupt mask standby time: 40
µs
+ Change-to-interrupt processing: 30
µs
Minimum response time: 170
µs
In addition to the response time shown above, the time required for executing
the interrupt processing routine itself and a return time of 30
µs must also be
accounted for when returning to the process that was interrupted.
Be sure to allow for interrupt processing time when using interrupts in the pro-
gram.
Outputs from interrupt routines can be output immediately if direct output is
used. Direct output will be used for both the main program and the interrupt
routines, and cannot be set separately.

Omron CQM1H - PROGRAM Specifications

General

I/O Capacity	Up to 512 points
Power Supply	100 to 240 VAC, 50/60 Hz or 24 VDC (depending on model)
Instruction Set	Basic and advanced instructions
Operating Temperature	0 to 55°C
Program Capacity	7.2K to 15.2K steps
Communication Ports	RS-232C
Expansion Slots	Up to 3 expansion units
Type	Programmable Logic Controller (PLC)
CPU Type	RISC
Program Memory	7.2K to 15.2K steps
I/O Points	512 max
Expansion Capability	Up to 3 expansion units
Data Memory	RAM (battery backup)