GSK 980TC3 Series, Руководство пользователя

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GSK980TC3 Series Bus Turning CNC system PLC, Installation and Connection User Manual
10
一
Programming
2.5.1
Input Signal Treatment
(1) NC input register
The NC input signals from the NC are memorized into the NC input register, which are transferred to
PLC each 8ms. The 1
st
level program performs the corresponding treatment using state of these
signals.
(2) Machine tool input register
The machine tool input register is scanned and memorized its input signal from the machine each
8ms. The 1
st
level program is also performed the corresponding treatment by using this signals
directly.
(3) The 2
nd
level program input register
The 2
nd
level program input signal register is also called the 2
nd
level program synchronic input
signal register. Wherein, the stored input signal is treated by the 2
nd
level program. This signal state
in the register is synchronic with the 2
nd
level one.
The signals both in the NC and machine tool input register can be locked to the 2
nd
level program
input latch, as long as the 2
nd
level program performs. The signal state in this latch keeps invariable
during the performance of the 2
nd
level program.
2.5.2
The Treatment of the Output Signal
(1) NC output register
The output signal transfers to the NC output register from the PLC each 8ms.
(2) Machine tool output register
The signal memorized in the machine tool output register conveys to the machine tool each 8ms.
Note: The signal states, such as the NC input register, NC output register, machine input register and
machine output register, which can be displayed by the self-diagnosis function. The diagnosis number
is the address number in the sequence programming.
2.5.3 The Distinguish of the Signal State Between the 1st Level and the 2nd Level
Program
As for the same input signal, their states may different between the 1
st
and 2
nd
level programming,
that is the reason that different registers are used between two levels programming. Namely, the
input signal used with the 2
nd
level program is the one of the 1
st
level who is locked. And therefore,