Siemens SINUMERIK 840D sl Function Manual page 894

P3: Basic PLC program for SINUMERIK 840D sl
13.13 PLC functions for HMI
with "string" = "DB<DB number>.DBB<byte address>"
Note
Even byte address
The data area must start at an even byte address.
Structure of the data area
EB n + 0
EB n + 1
EB n + 2
EB n + 3
EB n + 4
EB n + 7
Supplementary conditions
When the HMI monitoring is active, the following PLC/HMI interface signals are no longer
processed:
● DB19.DBB10 (PLC hardkeys)
● DB19.DBB21 (active SINUMERIK operating area)
● DB19.DBW24 (current screen number)
Example
Assumptions
● Current operating area: "Machine", number: 201
● Actual screen: "AUTOMATIC" start screen, number: 200
● PLC data area: DB60.DBB10
Parameterization
● MD9032 $MM_HMI_MONITOR = "DB60.DBB10"
Values in the data area
● DB60.DBB10: 201
● DB60.DBW12: 200
894
Byte Meaning
Active SINUMERIK operating area
Reserved
Current screen number
Reserved
... ...
Reserved
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions