Siemens SINUMERIK 840D Operator's Manual page 258

5
"Parameters" Operating Area
5.8 Display system variables
System
variable
Variable
log
Insert
variable
Insert user
variable
OK
Initial.
log
Start log
or
$A_PROTO=1
Stop
log
or
$A_PROTO=0
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Recording of synchronized action variables can be limited to the event
with identification number 1.
This event records variables in the IPO cycle or
· A maximum of 6 variable contents can be recorded simultaneously
in the log file.
· Size for memory depth: Values between 3 and 50 KB.
The HMI interprets the contents of the log file and displays them in
graphic form.
Operating sequence
The "System variable display" appears.
The softkey "Variable log" opens the screen with the heading
"Logging system variables".
The softkey "Insert variable" opens a dialog box in which the system
variable to be recorded can be selected.
The softkey available from SW 6.4 "Insert user variable" opens a
dialog box where you can select any available user variables.
The variable name in the higher level window in the current recording
list appears behind "OK".
If the list already contains 6 entries, the entry on which the cursor is
positioned is overwritten.
Whenever you create a log, you must first initialize the logging
function in the NC by pressing the button "Initial. log".
You are informed when initialization is complete in the bottom left-
hand corner of the display with the message "Logging initialized - You
can now start".
You can start logging by pressing the button "Start log" or with the
system variable $A_PROTO=1 in the part program.
You can stop logging by pressing the button "Stop log" or with the
system variable $A_PROTO=0.
After stopping, the log memory is automatically downloaded to a file.
SINUMERIK 840D/840Di/810D Operator's Guide HMI Advanced (BAD) – 03.04 Edition
5
03.04
Ó Siemens AG, 2004. All rights reserved