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Service Support Spirit
3.2 Chassis port
3.2.1 CNC port
THC connect with the CNC by a socket which has 10 pin，the diagram below pin definition:
Figure 3.3 The port of connecting with CNC
Warning:
1. The signal which connected with CNC is insulated by optocoupler , and the effective level
is low (user can change it to make high level effective)
2. TRANSFER_1、TRANSFER_2 are a disconnected contactor of relay. After piercing has
accomplished, if CNC detect arc voltage effectively, the contactor will be close. When arc
start is not effective, the contactor keep disconnected state.
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