Siemens SINUMERIK 840D sl Commissioning Manual page 152

NCK start-up
10.5 Parameterize axis data
● MD36120 POS_LIMIT_MINUS2 (2nd software limit switch minus)
● MD36130 POS_LIMIT_PLUS2 (2nd software limit switch plus)
● IS: DB31,... DBX12.2 (2nd software limit switch minus)
● IS: DB31,... DBX12.3 (2nd software limit switch plus)
● Alarm: "10620 Axis reaching software limit switch +/-"
● Alarm: "10621 Axis is at software limit switch +/- (JOG)"
● Alarm: "10720 Progr. end point is behind software limit switch +/-"
Hardware limit switches
If the PLC signals that a hardware limit switch has been reached, the machine axis is
stopped with the parameterized brake response.
● IS: DB31, ... DBX12.1 (hardware limit switch plus)
● IS: DB31, ... DBX12.0 (hardware limit switch minus)
● MD36600 BRAKE_MODE_CHOICE (deceleration behavior on hardware limit switch)
● Alarm: "21614 Hardware limit switch [+/-]"
Figure 10-15 Overview of end limitations
Dynamic monitoring functions
The dynamic monitoring functions with reference to a machine axis are:
152
NOTICE
All position monitoring functions are only active with valid reference point of the
corresponding reference point of the machine axis.
0 = Brake characteristic is complied with
1 = Rapid deceleration with setpoint "0"
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
IBN CNC: NCK, PLC, drive