Cj1-H And Cj1M Cpu Unit Features; Cj1-H-R Cpu Unit Features - Omron CJ - 09-2009 Operation Manual

CJ1-H and CJ1M CPU Unit Features

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CJ1-H and CJ1M CPU Unit Features

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CJ1-H-R CPU Unit Features

High-speed Overhead Processing (Less Than Half of Previous Models)
High-speed I/O Refreshing (Less Than Half of Previous Models)
High-speed Interrupts (Approximately Three Times Faster Than Previous Models)
Scheduled Interrupts Set in Increments of 0.1 ms
High-speed Timer Instructions (Ten Times Faster Than Previous Models)
High-speed Clock Pulses (More Than Five Times Faster Than Previous Models)
High-speed Floating-point Math (Up to 70 Times Faster Than Previous Models
The CJ1-H-R (high-speed) CPU Units (CJ1H-CPU@@H-R) have the following
features.
The CJ1-H-R CPU Units are completely upwardly compatible from the CJ1H-
CPU@@H Units, and yet they are much faster overall.
Example 1: A program consisting of 30K steps of only basic instructions with
128 inputs and 128 outputs executes in 0.7 ms, or 1.43 times faster (1 ms for
a CJ1-H CPU Unit).
Example 2: A program consisting of 30K steps of basic and special instruc-
tions in a 7:3 ratio with 128 inputs and 128 outputs executes in 0.9 ms, or 1.33
times faster (1.2 ms for a CJ1-H CPU Unit).
Example 3: A program consisting of 30K steps of basic, special, and floating-
point math instructions in a 6:3:1 ratio with 128 inputs, 128 outputs, two Ana-
log Input Units, and Two Position Control Units (4 axes) executes in 1.5 ms, or
5.4 times faster (8.1 ms for a CJ1-H CPU Unit).
Overhead processing time has been reduced from 0.3 to 0.13 ms.
On average, the refresh time for Basic I/O Units and Special I/O Units has
been cut in half or more.
Examples:
16-point Input Unit: Reduced from 3 µs to 1.4 µs
Analog Input Unit: Reduced from 120 µs to 50 µs
The software interrupt response time has been reduced from 124 µs to 40 µs.
A setting unit 0.1 ms has been added for scheduled interrupts.
Although high precision was provided for the previous 1-ms timer instruction,
0.1-ms and 0.01-ms timer instructions have been added.
Clock pulses of 0.1 ms, 1 ms, and 0.01 s (see note) have been added to the
previous pulses of 0.02 s, 0.1 s, 0.2 s, 1 s, and 1 min.
Note The 0.01 s Clock Pulse cannot be used with unit version 4.1 of the
CJ1-H-R CPU Units. The 0.01 s Clock Pulse can be used with all oth-
er unit versions.
Floating-point calculations of sine, cosine, and tangent functions are up to 70
times faster than previous models.
Example: SIN: 42.0 µs reduced to 0.59 µs (71 times faster), COS: 31.5 µs
reduced to 0.59 µs (53 times faster), TAN: 16.3 µs reduced to 1.18 µs (13.8
times faster).
Section 1-3
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