Reference Movement

The TwinCAT NC can reference the axis at the AX5000 using the probe unit of AX5000.

The probe unit should be configured within the startup list, although configuration is also possible during axis operation (at runtime). In order for the TwinCAT NC to be able to control the probe unit and respond to its status, IDNs S-0-0405 and S-0-0406 have to be mapped into the real-time control and status bit 2. This is achieved through associated entries in IDNs S-0-0303 and S-0-0307.

Configuration of the real-time control and status bits:

The position stored by the drive with the probe unit is held in IDN S-0-0130 (probe value 1 positive edge) or in IDN S-0-0131 (probe value 1 negative edge). One of these two IDNs is cyclically transferred to the NC with the AT telegram according to the configured edge.

Cyclical transfer of IDN S-0-0130 with the AT frame:

The AX5000 probe unit is activated with the "Probing cycle procedure" command (S-0-0170). When this command is activated the probe unit configuration are transferred internally. The configuration data are write-protected while the command is active.

The "Probing cycle procedure commands" can be activated by setting the IDN parameter to 3 (set and enable). The commands can also be started via the startup list in the transition from safe SafeOp to Op.

Configuration of the probe unit see AX5000_ProbeUnit.