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Machine Data, Modes and Traversing Programs IP 266

The remaining distance to go is retained until the next positioning operation.

Interruption of the traversing program via the "External Start Enable" signal is

possible. If a positioning operation or dwell is currently in progress, it is com-

pleted prior to interruption of the program. When the signal is enabled, i. e.

when the signal level is "1", the traversing program is resumed at the point of

interruption.

5.3.9 Automatic Single Block (Mode 9)

Automatic single block

Mode

Start/Stop/Exec

Function

Program number

Parameters

Traversing programs written for mode 8 can be used without modification in

mode 9. Before starting the mode, enter the number of the traversing program

you want to execute. Start the mode by selecting the "Start" function.

The IP 266 interrupts program execution prior to every positioning operation or

dwell. Start the next job with "Exec".

As in mode 8, an "External Start Enable" signal can interrupt the traversing pro-

gram. If a positioning operation or dwell is in progress, it is completed prior to

the interruption.

The IP then awaits the "Exec" command. When you have pressed "Exec", absence

of the "External Start Enable" signal is flagged with an error message. When the

signal is enabled, i. e. becomes "1", the traversing program is resumed at the

point of interruption.

"Exec" is not permitted at this point, and would abort the traversing program.

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Siemens IP-Module Manual Pagina 116