Activation And Deactivation Of Protection Zones - Siemens SINUMERIK 828D Function Manual

A3: Axis Monitoring, Protection Zones
2.3 Protection zones
File
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2.3.5

Activation and deactivation of protection zones

General information
The activation status of a protection zone is:
• Preactivated
• Preactivated with conditional stop
• Enabled
• Deactivated
A protection zone is monitored for violation only when it is activated.
Activation
The activation of a protection zone can take place through:
• Part program instruction
• Automatically after the control powers up
• PLC user program
For activation through the PLC user program, the protection zone must be first preactivated via a part
program.
The preactivation, deactivation and activation of all protection zones always takes place channel-specifically. A
protection zone can also be active in multiple channels simultaneously (application example: Double-slide single-
spindle machine with one quill and two machining slides.
Protection zones are activated immediately after the runup of the control, if the corresponding system variable
$SN_PA_ACTIV_IMMED[n] or. $SC_PA_ACTIV_IMMED[n] has been set.
Note
Machine-related protection zones are activated after the runup of the control in all channels.
An activated protection zone is only taken into account after the successful referencing of all participating
geometry axes.
116
Blocks
All data blocks of the protection zones
All data blocks of the protection zones
All data blocks of the channel­specific protection zones
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions