Configuring Step Tables - Siemens SINUMERIK 828D Commissioning Manual

9.4.4

Configuring step tables

Configuring step tables
You can find the transfer-step tables (TM_CTS, DB9900 and TM_VTS, DB9901) and the
acknowledgment-step table (TM_ACK, DB9902) in the Programming Tool under "Libraries"
→ "Special data blocks". The blocks are copied into a project with a double-click.
The structure of the data blocks is permanently fixed.
The blocks are not yet filled with the necessary data. The user must edit them in the
Programming Tool, via the menu "View" → "Data block". The constant tables (TM_CTS,
DB9900 and TM_ACK, DB9902) are configured by writing the initial data block values in the
Programming Tool.
The initial data block values are loaded into the control, along with the PLC user program.
Changed initial values are not activated until the PLC is restarted!
Configuring the transfer steps
Any changes to the tool and magazine positions must be communicated to the tool
management by the PLC user program. A table of all mechanical single movements which
should be acknowledged / communicated helps with this. For each tool transfer, the table
contains the corresponding tool start and target position, or for positioning a magazine
location at a transfer point (change, load, unload point), the magazine position and the name
of the transfer point.
● The transfer steps 1 ... 64 are permanently configured in TM_CTS (DB9900) and can be
● The transfer steps 101 ... 164 in TM_VTS (DB9901) can be completely or partially
Coding for position from a job
In the constant transfer-step table, the locations of real magazines are not identified by their
actual values (e. g. 1/14 for magazine 1 location 14) but with symbolic values (0/1) or (0/2).
Otherwise the transfer-step table would be huge for large magazines.
These symbolic values have the following meaning:
Magazine / Location Meaning
( 0 / 1 )
( 0 / 2 )
( 0 / 3 )
This symbolic notation form can only be used for synchronous intermediate and end
acknowledgments, since asynchronous messages do not have a job as a reference.
Turning and Milling
Commissioning Manual, 02/2012, 6FC5397-3DP40-3BA0
changed only by reloading.
overwritten by the PLC user program (e.g. by entering the current magazine location).
The source position of the only or new tool from the job should be used.
The target position of the old tool from the job should be used.
The target position of the only tool or new tool from the job should be used.
Tool management
9.4 PLC Program Blocks
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