Siemens SINUMERIK 840DE SL User Manual

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.
WARNING
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
● 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)
Outputs
● 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)
Bit memory Memory bit (Mx), memory byte (MBx), memory word (MWx), memory double
word (MDx)
Times Time (Tx)
Counters
● Counter (Cx)
● Counter (Cx)
Data
● Data block (DBx): Data bit (DBXx), data byte (DBBx), data word (DBWx),
data double word (DBDx)
● Data block (VBx): Data bit (VBXx), data byte (VBBx), data word (VBWx),
data double word (VBDx)
Alarm, error, and system messages
15.6 PLC and NC variables
Milling
816 Operating Manual, 08/2018, 6FC5398-7CP41-0BA0

Siemens SINUMERIK 840DE SL Specifications

General

Brand	Siemens
Model	SINUMERIK 840DE SL
Category	Control Systems
Language	English