Alarm, error and system messages
13.5 PLC and NC variables
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690 Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
13.5 PLC and NC variables
13.5.1 Displaying and editing PLC and NC variables
The "NC/PLC Variables" window allows NC system variables and PLC variables to be
monitored and changed.
You receive the following list in which you can enter the desired NC/PLC variables in order to
display the actual values.
● 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)
Outputs Output bit (Ax), output byte (ABx), output word (AWx), output double word
(ADx)
Bit memory Memory bit (Mx), memory byte (MBx), memory word (MWx), memory
double word (MDx)
Times Time (Tx)
Counters Counter (Cx)
Data Data block (DBx): Data bit (DBXx), data byte (DBBx), data word (DBWx),
data double word (DBDx)
Formats
B Binary
H Hexadecimal
D Decimal without sign
+/-D Decimal with sign
F Floating point (for double words)
A ASCII character
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