Hypertherm HPR260 Manual Gas Preventive Maintenance Program Rev.5 User Manual
Page 248
APPENDIX B – CNC INTERFACE PROTOCOL
HPR260 Auto Gas
Instruction Manual
b-3
5
Pierce Complete
Input
When active, the system will use shield preflow gases during
piercing. When the signal is removed, it will switch to shield cutflow
gases
Corner Current
Input
When active, the system will switch to user specified corner current.
Remote Power
Input
Used to turn the power on or off
Not Ready for Start
Output
When on, this signal indicates that the plasma system is not ready for
a plasma start signal. This could be because the system is purging or
in test gas mode.
Ramp-down Error
Output
Indicates the arc did not ramp-down properly. Consumable life is
shortened.
TX+
Serial
Transmitting from the system
Connect to CNC RX+
TX-
Serial
Transmitting from the system
Connect to CNC RX-
RX+
Serial
Receiving by the system
Connect to CNC TX+
RX-
Serial
Receiving by the system
Connect to CNC TX-
Signal list (continued)
Signal name
Type
Description
Hardware
Inputs – active low, dry contact, opto-isolated
Inactive: 24 V or open circuit, 0 mA
Active: 0v or closed contact (0 ohm min, 6.5 mA; 200K ohm max, 0.1 mA)
Outputs – active low, open collector, opto-isolated
Inactive: Up to 40 V open circuit/open collector, 0 mA
Recommended 24 V pull-up into high impedance load
Active: 0.3v max output into high impedance load, sinking cap up to 5 mA
Or 2k ohm min. load resistance
Serial – RS422 serial communications