·409·
CNC 8035
(SOFT M: V15.3X)
(S
OFT T: V16.3X)
13
PLC PROGRAMMING EXAMPLE
It is a three-axes machine (X, Y, Z) having a spindle with two speed ranges.
The PLC, besides controlling the 3 axes and the spindle, is in charge of lubricating the axes as well
as turning the coolant on and off.
CNC configuration
The PLC has 512 inputs and 512 outputs. Some of them, depending on the CNC configuration,
communicate with external devices.
Input I1 is the emergency input of the CNC and must be supplied with 24V. Regardless
of how it is treated by the PLC program, this signal is processed directly by the CNC
at all times.
Output O1 is normally at 24V, high logic level, and it is set low, 0V, whenever an
ALARM or an ERROR occurs at the PLC output O1.
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