Siemens SINUMERIK 802D sl, Руководство по эксплуатации функций, Страница: 30 / 462

Various Interface Signals (A2)
1.6 NC services
Turning, Milling, Nibbling
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Function Manual, 11/2012, 6FC5397-1CP10-5BA0
1.6 NC services
1.6.1 User interface
1.6.1.1 General information
Communication jobs can be performed via the "NC services" PLC/NCK interface. The
following services are available for this:
●
Start program invocation services (PI services) in the NCK area (e.g. ASUB)
● Read variables from the NCK area
● Write variables from the NCK area
The activation of the respective service is performed via the global part of the interface. The
parameterization of the individual services is described below.
Job, global part
Only one service can run at a time. The service is selected via V1200 0000.1 and
V1200 0000.2:
Service V1200 0000.2 V1200 0000.1
Start PI service in the NCK area 1 0
Read variables from the NCK area 0 0
Write variables from the NCK area 0 1
Start:
A job is started by setting the signal V1200 0000.0 = 1. A new job can only be started if the
previous job has been completed, i.e. the acknowledgement signals ("Job completed"
V1200 2000.0 and "Error in job" V1200 2000.1) must be zero.
The execution of a job may take several PLC cycles and vary depending on the utilization;
thus, this function is not real-time-capable.
Note
A job already started cannot be cancelled. If the "Start" signal is inadvertently reset before
receiving the acknowledgement, the result signals for this job are not refreshed; the job,
however, is executed.