Plc And Nc Variables; Displaying And Editing Plc And Nc Variables - Siemens SINUMERIK 840D sl Operating Manual

Alarm, error and system messages

15.6 PLC and NC variables

Note
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(for 840D sl)
15.6 PLC and NC variables
15.6.1

Displaying and editing PLC and NC variables

Changes can only be made to the NC/PLC variables with the appropriate password.
Incorrect parameterization
Changes in the states of NC/PLC variables have a considerable influence on the machine.
Incorrect configuration of the parameters can endanger life and cause damage to the machine.
In the "NC/PLC Variables" window, enter the NC system variables and PLC variables that you
want to monitor or change in the list:
● Variable
Address for NC/PLC variable.
Incorrect variables have a red background and are displayed with a # character in the value
column.
● Comment
Any comment on the variable.
The columns can be displayed and hidden.
● Format
Specify the format in which the variable is to be displayed.
The format can be specified (e.g. floating point).
● Value
Displays the actual value of the NC/PLC variables.
PLC variables
Inputs
Outputs
Bit memory
758
WARNING
● Input bit (Ex), input byte (EBx), input word (EWx), input double word (EDx)
● Input bit (Ix), input byte (IBx), input word (IWx), input double word (IDx)
● Output bit (Ax), output byte (ABx), output word (AWx), output double word
(ADx)
● Output bit (Qx), output byte (QBx), output word (QWx), output double
word (QDx)
Memory bit (Mx), memory byte (MBx), memory word (MWx), memory double
word (MDx)
Operating Manual, 05/2017, A5E40868721
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