Controllers MELSEC-Q Series
Product features -CPU-
Productivity
Multiple CPUs
To achieve high-speed synchronized control between multiple CPUs, a dedicated bus is used, independent of sequence program operation (0.88 ms operation cycle)*1. This multiple CPU high-speed communication is synchronized with motion control to maximize efficiency.
In-position response time
Fast in-position response time is realized between the motion CPU and programmable controller. The in-position signal is triggered by the servo amplifier of the first axis, with the time taken between the second axis at start-up and the speed command output of the programmable controller CPU.
- *1.Q00UJ, Q00U, Q01U and Q02U are not supported.
Improved production time
As applications are getting larger and more complex it is essential to shorten the system operation cycle time. To achieve this, the ultra high-speed of 1.9 ns (LD instruction) processing enables to realize shorter operating cycles.
System performance can be improved by reducing the overall scan time, preventing any variances in performance. In addition to realization of high-speed control which is normally associated with microcomputer control.
Data processing
High-speed floating point addition processing supports high-speed and high-precision operation processing. Also, double-precision floating-point operation instruction is included to simplify programming and reduce calculation errors when implementing complex equations.
Higher system accuracy
Minimal fixed scan interrupt program time is 100 µs*2. High-speed I/O signals resulting in high-accuracy control system.
Example: High-speed position detection of film paper feed system
- *2.Only supported by High-speed Universal model QCPU and Universal model process CPU.
Basic functions
The maximum CPU's built-in device memory capacity is 60K words*3. Support increasing control and quality data.
- *3.Only for Q13UDVCPU and Q26UDVCPU.
Large data volume at high-speed
When an 8 MB extended SRAM cassette is installed in the High-speed Universal model QCPU, the standard RAM can be as one continuous file register with up to 4736K words capacity, simplifying the user program.
Even if the device memory is insufficient, the file register area can be expanded easily by installing the extended SRAM cassette.
◎File register capacity*4
| Model | Q03UDV | Q04UDV | Q06UDV | Q13UDV | Q26UDV |
|---|---|---|---|---|---|
| Extended SRAM cassette not installed (Standard RAM capacity) |
96K words (192 KB) |
128K words (256 KB) |
384K words (768 KB) |
512K words (1024 KB) |
640K words (1280 KB) |
| with Q4MCA-1MBS (1 MB)*5 | 608K words | 640K words | 896K words | 1024K words | 1152K words |
| with Q4MCA-2MBS (2 MB)*5 | 1120K words | 1152K words | 1408K words | 1536K words | 1664K words |
| with Q4MCA-4MBS (4 MB)*5 | 2144K words | 2176K words | 2432K words | 2560K words | 2688K words |
| with Q4MCA-8MBS (8 MB)*5 | 4192K words | 4224K words | 4480K words | 4608K words | 4736K words |
- *4.Maximum capacity when using extended SRAM cassette file as a file register. Total when CPU's standard RAM and extended SRAM cassette are installed.
- *5.Only High-speed Universal model QCPU.
SD memory card
SD memory card is supported allowing easy data exchange with a personal computer. The SD memory card and extended SRAM cassette can be used at the same time allowing extension of file registers (with extended SRAM cassette), data file logging, boot data, and storing of large comment data (SD memory card).
Protect important data
A max. 32-character file password can be set*6.
Special characters (*, @, &, etc.) can be used in addition to alphanumeric characters making it difficult to compromise the password.
Also protection of valuable intellectual property can be enhanced by only allowing preregistered devices to access the CPU, blocking out unauthorized users*7.
- *6.Only supported by High-speed Universal model QCPU and Universal model process CPU. Other models use 4 character password system.
- *7.Only supported by High-speed Universal model QCPU and Universal model process CPU.