Mitsubishi MOTION CONTROLLERS Q172DCPU Instrukcja Użytkownika Pobierz pdf (Strona 5)

■Automatic refresh setting count has increased from 4 to 32.

<In-position response time>

In a 2 CPUs, Multiple CPU system consisting of a PLC CPU and Motion CPU, the Motion CPU

receives the in-position signal from the servo amplifier of the first axis. Next, the PLC CPU sends

a start command to the second amplifier. This example thus shows the time it takes from the

stopping of motion on one axis until the beginning of motion on a second axis. Since the Motion

CPU and PLC CPU must continuously communicate back-and-forth, this time is a good indicator

of CPU-to-CPU data transfer speed and more importantly, overall system performance and tact

time.

More freedom in setting up the program for CPU-

to-CPU data exchange.

Motion critical data such as position and velocity

information can be assigned to specific CPU-to-

CPU high-speed refresh area thus synchronizing

their exchange between the Multiple CPU’s with

that of the motion control system’s operation

cycle.

+ Q173DCPU

Processing time

Measurement details

Decreased

in 1/2

+ Q173HCPU

In-position response time

In-position

signal

Time

Motor

speed

Motion Dedicated PLC Instruction Large reduction in programming

read/write time

■Introducing easy-to-use Motion dedicated PLC

instructions.

■Increased debugging efficiency by reducing

program read/write time to 1/3 the previous

execution time.

Issue multiple instructions at the same time

Ex: Execution of 3 Motion dedicated SVST instruction at the same time.

Indirectly set data and execute instructions at the same time

Ex: Indirect data setting of speed and position plus execution of the Motion dedicated SVST instruction all at the same time.

Ladder program

DMOV

DP.SVST

DP.SVST H3E1 "J1" K0

DP.SVST H3E1 "J2" K1

DP.SVST H3E1 "J3" K2

RST M0

[K0 : Real]

1 INC-1

Axis 1, U3E0¥G12046 PLS

Speed U3E0¥G12048 PLS/sec

Ladder program

Servo program

Motion CPU communication time

Servo program read time

Q173DCPU

Communication time

Approx. 3 times

faster

Q173HCPU

U3E0¥

G12046

U3E0¥

G12048

K10000

K500

H3E1

"J1" K0

1 2 3 4 5 6 7 8

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Mitsubishi MOTION CONTROLLERS Q172DCPU Instrukcja Użytkownika Strona 5

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