Siemens SINUMERIK 840D sl Commissioning Manual page 112

Customizing the "Machine" operating area
8.10 User status display (OEM)
The interface in the user DB has the following format:
Start-DBB byte
or
Start-DBB +18 byte
Start-DBB +1 word
or
Start-DBB +19 word
Start-DBB + 3 string
or
Start DBB+20 double Word
The first parameter contains an offset for a text number with a base of 700,000 (user PLC
texts). If this parameter = 0, the corresponding line is deleted. The second parameter
contains a maximum 12-character string. Unless empty, this text is output instead of the user
PLC text.
The parameters must be written from "back to front" in the PLC, i.e. all parameters must be
initialized before the first byte is set. The data for the next line is located exactly 18 bytes
after the start byte. The lines are output from left to right; a maximum of three output fields
per line are provided (i.e. a total of six fields are possible).
A hotlink to the first byte for each line is set up in the operating software. If a change occurs
in that byte, the operating software responds. If the operating software displayed the data, it
writes a -1 to the first variable. The operating software is informed about this change by
means of the hotlink, whereupon it writes a 0 to this variable.
The HMI itself does not have to react to this change. The PLC can only write data to the
interface again if the variable is set to 0. This mechanism ensures that the operating
software knows about all parameter changes.
Configuring OEM icons
OEM icons indicating the machine state can be output in the field provided for the program
control display (e.g. SBL, M01, etc.). If OEM icons are defined, the elements for the program
control display are hidden.
The icon names are identified in the HEADER.INI configuration file, similar to user icons:
[OemIcons]
OI_0= <name.png>, <position>
...
OI_31= <name.png>, <position>
106
Bit0=1: there is something to do
All bits=1: job is acknowledged by HMI
All bits=0: PLC can write to interface again.
Offset for text from alpu_xx.com to be displayed;
700 000 is the base address and is always summed internally.
All bits=0: Delete line
String containing a maximum of 12 characters
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
SINUMERIK Operate (IM9)