Siemens sinumerik 840d Programming Manual page 145

08.97
4
4.2 Activating/deactivating protection zones: CPROT, NPROT
840D 840D
NCU 571 NCU 572
NCU 573
Sequence
Activation status
A protection zone is generally activated in the part
program with status = 2.
The status is always channel-specific even for
machine-oriented protection zones.
If a PLC user program provides for a protection zone to
be effectively set by a PLC user program, the required
preactivation is implemented with status = 1.
The protection zones are deactivated and therefore
disabled with Status = 0. No offset is necessary.
Offset of protection zones on
(pre)activation
The offset can take place in 1, 2, or 3 dimensions.
The offset refers to:
• the machine zero in workpiece-specific protection
zones,
• the tool carrier reference point F in tool-specific
protection zones.
Additional notes
Protection zones can be activated straight after booting
and subsequent reference point approach. The system
variable $SN_PA_ACTIV_IMMED [n] or
$SN_PA_ACTIV_IMMED[n] = TRUE must be set for
this. They are always activated with Status = 2 and have
no offset.
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
FM-NC 810D 840Di
Protection Zones
4
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