Lenze ETC Motion Control Manual de usuario descargar pdf (Pagina 175)

CNC programming

Block extensions

H functions

3.4

3.4.2

175

EDSTCXN EN 2.0

3.4.2 H functions

H functions are provided for changing technology parameters. The number

programmed for H is transferred to the PLC and must be evaluated there.

The H function is always evaluated as the first function in the block.

Generally, H functions are generally time synchronized, i.e. the following

function is only interpreted if the transfer by the PLC was acknowledged.

The H functions are transmitted to the PLC by means of handshake with

strobe and acknowledgement. The NC signalizes a new H function to the PLC

with the negative edge of the strobe.

Strobe

Quittung

max 1s max 10s

Satz

Strobe

Quittung

max 1s max 10s

Satz

<1s <10s

ETCN055

0 Strobe

1 Acknowledgment

2 Next block

If the transmission of the technology parameters lasts longer than 10

seconds, the PLC must also remove the read enable, otherwise the control

will report the error message "Time Out bei der H−Funktionsübergabe an die

SPS" (Time Out during the H function transfer to the PLC).

3.4.3 M functions

M functions are transmitted to the PLC. These must be evaluated there and

the desired function triggered. A distinction is made between

"synchronized" and "non−synchronized" M functions.

The M functions with the numbers 0 ... 499 are synchronized. If these are

transmitted to the PLC, the processing of the NC program is interrupted until

the PLC acknowledgement has arrived and the read enable has been set.

In the case of non−synchronized M functions (>= 500), the next block of the

NC program is executed immediately after the output without waiting for

an acknowledgement from the PLC. It must be noted that the speed is also

reduced between two successive traverse blocks when exact positioning is

deactivated if several M functions are programmed in succession without a

traverse movement.

The following M functions are also evaluated in the NC computer:

M30: Program end

M14:Switches from the summation of the path length to P551 (profile)

M15, M16, M21: Switches from the summation of the path length to P551

(empty run)

M48: Speed overlap enabled (override on)

1 2 ... 170 171 172 173 174 175 176 177 178 179 180 ... 427 428

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ama 11 Jan 2025 | 19:35:39

rasha

Lenze ETC Motion Control Manual de usuario Pagina 175

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