Software limit switches

Software limit switches are used to limit the travel range of an axis. Monitoring of the software limit switches can be activated and configured in the configuration menu of the software module during startup. See chapter Monitoring functions. The drive must be referenced to allow for monitoring the software limit switches.

If software limit switch monitoring is enabled, the following response will be triggered depending on the active operating mode as soon as the configured positive or negative limit switch position is exceeded:

• Jog mode, position controlled (100)
• The drive stops at the software limit switch position using the deceleration specified via PO 4. If "Limit switch error response" is enabled, the error message E30.01/02 "Positive/negative limit switch hit" is issued.
• Jog mode speed controlled (101) and speed control (200)
• The drive stops along the configured emergency stop ramp if the respective "Limit switch error response" is activated. The error message E30.01/02 "Positive/negative limit switch hit" is issued.

Error messages can be reset using PO 1.8 "Error reset". First, specify a direction of rotation or a target position in the direction of the valid range of the software limit switches. If you wish to move the drive outside the range limited by the software limit switches, you have to disable the software limit switches using the PO 1:12 signal.