Basic Functions
Function Manual 09/2011, 6FC5397-0BP40-2BA0
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14
P4: PLC for SINUMERIK 828D
14.1
Overview
14.1.1
PLC firmware
The PLC of the SINUMERIK 828D is an integrated PLC based on the SIMATIC S7-200 command set.
The PLC user program is essentially programmed using a Windows PC with the "Programming Tool PLC828". In
addition, the PLC can be diagnosed and edited via the operator interface of the control. A "Ladder-Add-On-Tool"
is available in the control for this purpose.
Note the following special features:
• The PLC user program is completely programmed in ladder logic (LAD).
• A subset of the programming language of the S7-200 is supported.
• When loading to the CPU, in addition to the code for execution, the complete project data (including symbols
and comments) is loaded into the control. This means that the control always has the project that matches the
currently running PLC user program.
• When loading from the CPU, the complete project data (including symbols and comments) is loaded into the
Programming Tool PLC828 and can be processed/edited using this.
• The user must manage the data and process information according to type. The declared data type must be
used consistently each time that the data is accessed.
14.1.2
PLC user interface
The user interface is set-up by the PLC firmware, which also organizes the exchange of all signals and data
between the PLC on one side and the NCK and HMI on the other side.
The user interface comprises the parts:
• Data interface with cyclic exchange (see "Data interface [Page 1147]")
• Function interface with function or task-related data exchange (see "Function interface [Page 1153]").
The structured data of these interfaces (retentive and non-retentive) are made available to the user by the
firmware by assigning to data blocks: The NC (NCK, tool manager, NC channel, axes, spindles, …) and the HMI
are "Communication partners" of the PLC user program.
Содержание SINUMERIK 828D Turning
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