Siemens SINUMERIK 840D sl Operating Manual page 30

Introduction
1.4 Operator interface
Display
Active mode or submode
Alarms and messages
30
Description
"Program manager" operating area
"Diagnosis" operating area
"Start-up" operating area
"Jog" mode
"MDA" mode
"Auto" mode
"Teach In" submode
"Repos" submode
"Ref Point" submode
Alarm display
The alarm numbers are displayed in white lettering on a red
background. The associated alarm text is shown in red
lettering.
An arrow indicates that several alarms are active.
An acknowledgment symbol indicates that the alarm can be
acknowledged or canceled.
NC or PLC message
Message numbers and texts are shown in black lettering.
An arrow indicates that several messages are active.
Messages from NC programs do not have numbers and appear
in green lettering.
Operating Manual, 02/2011, 6FC5398-6AP40-0BA0
Universal