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In the THC1(Analog) Settings, chose the register “HiCON/DRO_From_Ctrl_19” as the Analog
Voltage Input Register
Set the Analog Voltage for ArcOK with a desired range (Min and Max Voltage). Arc Ok and THC
sequence will only continue if it sees the Tip Voltage value is within this range and the THC On
led is lit.
USE EXTERNAL ARC OK
All the settings remain same as above except for the ‘Use Analog voltage for Arc OK on the
Plasma screen configuration is unchecked, as shown below.
When using an external ArcOK signal from the Plasma machine, given as input to the 7866
motion controller, from the input mapping of ‘THC ON’ signal to an input pin.
