Signals, Synchronized Actions From Channel; Reading And Writing Plc Variables; Axis Actual Values And Distance-To-Go - Siemens SINUMERIK 808D Parameter Manual

PLC user interface

6.14 Axis actual values and distance-to-go

6.13.2

Signals, synchronized actions from channel

DB4700 Signals, synchronized actions from channel [r]
NCK -> PLC interface
Byte Bit 7
0
ID8
1
ID16
2
ID24
6.13.3

Reading and writing PLC variables

DB4900 PLC variables [r/w]
PLC interface
Byte Bit 7
0
1
2
...
4094
4095
Note
The programming engineer (NCK and PLC) is responsible for organizing (structuring) this
memory area. Every storage position in the memory can be addressed provided that the limit
is selected according to the appropriate data format (i.e. a 'DWORD' for a 4byte limit, a WORD
for a 2byte limit, etc.). The memory area is always accessed with the information about the
data type and the position offset within the memory area. The PLC variables can be read or
written in the NC program $A_DBB[n] ("n" stands for the position offset in bytes).
6.14 Axis actual values and distance-to-go
DB5700 ... Signals from axis/spindle [r]
5704
NCK -> PLC interface
Byte Bit 7
0
4
504
Bit 6 Bit 5
Synchronized action with ID...can be blocked from the PLC
ID7 ID6
Synchronized action with ID...can be blocked from the PLC
ID15 ID14
Synchronized action with ID...can be blocked from the PLC
ID23 ID22
Bit 6 Bit 5
Bit 6 Bit 5
Axis actual value (REAL)
Axis distance-to-go (REAL)
Bit 4 Bit 3
ID5 ID4
ID13 ID12
ID21 ID20
Bit 4 Bit 3
Offset [0]
Offset [1]
Offset [2]
...
Offset [4094]
Offset [4095]
Bit 4 Bit 3
Bit 2 Bit 1
ID3 ID2
ID11 ID10
ID19 ID18
Bit 2 Bit 1
Bit 2 Bit 1
Parameter Manual
List Manual, 01/2017
Bit 0
ID1
ID9
ID17
Bit 0
Bit 0