Siemens SINUMERIK 840Di Function Manual page 1930

Detailed Description
2.2 Axis monitoring, protection zones (A3)
DB21, ...
DBX274.0 – Channel-specific protection zone 1 (...10) pre-activated
DBX275.1
Signal state 0 or The channel-specific protection zone 1 ( ...10) is deactivated in the current block.
edge change (De-activated in the part program.)
1 → 0
The protection zone can therefore not be activated or de-activated in the PLC user program using
the interface signal:
DB21, ... DBX10.0 - DBX11.1 (channel-specific protection zone 1 (...10))
Corresponding DB21, ... DBX10.0 - DBX11.1 (activate channel-specific protection zone 1 (...10))
to ....
DB21, ...
DBX276.0 – Machine-related protection zone 1 (...10) violated
DBX277.1
Edge evaluation: no
Signal state 1 or The activated, machine-related protection zone 1 ( ...10) is violated in the current block or in the
edge change current JOG movement.
0 → 1
The pre-activated, machine-related protection zone 1 ( ...10) would be violated in the current block
if it would be activated by the PLC.
Signal state 0 The activated, machine-related protection zone 1 (...10) is not violated in the current block.
or edge change
The pre-activated, machine-related protection zone 1 (...10) would not be violated in the current
1 → 0
block if it would be activated by the PLC.
Application Before parts are moved into the working zone - this IS can be used to check as to whether the tool
example(s) or workpiece is located in the machine-related protection zone of the part to be moved in.
DB21, ...
DBX278.0 - Channel-specific protection zone 1 (...10) violated
DBX279.1
Edge evaluation: no
Signal state 1 or The activated, channel-specific protection zone 1 ( ...10) is violated in the current block.
edge change
The pre-activated, channel-specific protection zone 1 ( ...10) would be violated in the current block
0 → 1
if it would be activated by the PLC.
Signal state 0 or The activated, channel-specific protection zone 1 ( ...10) is not violated in the current block.
edge change
The pre-activated, channel-specific protection zone 1 (...10) would not be violated in the current
1 → 0
block if it would be activated by the PLC.
Application Before parts are moved into the working zone - this IS can be used to check whether the tool or
example(s) workpiece is located in the channel-specific protection zone of the part to be moved-in.
2-66
Signal(s) updated: cyclic
Signal(s) updated: cyclic
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0