Alarms, error messages, and system alarms
20.4 PLC and NC variables
Milling
584 Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Note
NC system variables and PLC variables
System variables can be dependent on the channel. When the channel is switched over,
the values from the corresponding channel are displayed.
For user variables (GUDs) it is not necessary to make a specification according to global
or channel-specific GUDs. The indices of GUD arrays are, just like NC variables in the
system variable syntax, 0-based; this means that the first element starts with the index 0.
Using the tooltip, for NC system variables, you can display the OPI notation (with the
exception of GUDs).
Changing PLC variables
Changes can only be made to the PLC variables with the appropriate password.
DANGER
Changes in the states of NC/PLC variables have a major impact on the machine. Incorrect
configuration of the parameters can endanger human life and cause damage to the
machine.
Changing and deleting values
1. Select the "Diagnostics" operating area.
2. Press the "NC/PLC variab." softkey.
The "NC/PLC variables" window opens.
3. Position the cursor in the "Variable" column and enter the required
variable.
4. Press the <INPUT> key.
The operand is displayed with the value.
5. Press the "Details" softkey.
The "NC/PLC variables: Details" window opens. The information for
"Variable", "Comment" and "Value" are displayed in the full length.
6. Position the cursor in the "Format" field and choose the required
format with <SELECT>.
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