Siemens SINUMERIK 840D sl Commissioning Manual page 541

08/2005
Example 8: MMC command with asynchronous acknowldg mode
USER VAR TEST_1
Softkey 0
Sequence
The screen called via the asynchronous MMC command continues to be displayed
until one of the two configured softkeys is actuated:
• With softkey "End," the user dialog is immediately exited.
• With softkey "Screen 2," another screen is then displayed for 10 s.
Program structure
• The acknowledgment variable is defined as a string.
Length of the string: >= 20
(Values < 20 are evaluated internally only,
entered at positions 17 to 20 when a softkey SK0 to SK15 is activated).
• The string is assigned a value in the part program and any old softkey
information is deleted.
• Before the part program can branch as a function of the acknowledgment
variable, the block search must be halted by the STOPRE command.
• IF Match (Quit_1," SK1") >= 0 GotoF Label1
searches for a string within the string
If no softkey is actuated, the loop runs again.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Installation and Start-Up HMI (IAM) - 08/2005 Edition
Screen 2
END
Softkey 2 Softkey 3
Softkey 1
Commissioning HMI Advanced (IM4)
START
Softkey 4 Softkey 5 Softkey 6
2 Functions/Parameterization
8
Softkey
Softkey 9
Softkey 10
Softkey 11
Softkey 12
Softkey 13
Softkey 14
OK Softkey 15
Softkey 7
IM4/2-147