P4: PLC for SINUMERIK 828D
14.5 Data interface
Basic Functions
1148
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
14.5.1.2
NC channel signals
DB2500, 3200, 3300, 3500
The signals are structured as follows:
• Control/status signals with normal cyclic transfer, see "Mode signals [Page 1147] ".
• Auxiliary and G functions
These are entered in the interface DBs in two ways.
First, they are entered with the change signals.
The M signals M0 to M99 are additionally decoded and the associated interface bits are set for one cycle.
For G commands, only the groups selected via machine data are entered in the interface data block.
The S values are also entered together with the related M signals (M03, M04, M05) in the spindlespecific
interface. The axisspecific feedrates are also entered in the appropriate axisspecific interface.
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