Connect for Communication
XPR300 Instruction Manual 809480 151
How to connect to the plasma power supply with serial RS-422
For an example of a system diagram, refer to Serial RS-422 and discrete multi-system
interface (Sheet 17 of 22) on page 433.
For serial RS-422 multi-drop (multi-system) addressing, refer to XPR serial RS-422
multi-drop (multi-system) addressing in the CNC Communication Protocol for the XPR
Cutting System (809810).
For information on signals and protocols, refer to XPR serial RS-422 communications and
Serial RS-422 and EtherCAT commands in the CNC Communication Protocol for the XPR
Cutting System (809810).
To use arc voltage control (AVC) with a serial RS-422 cutting system, you
must install an additional PCB inside the plasma power supply. For
information about how to install this board, refer to VDC3 board
installation (for AVC with RS-422 and discrete-only) on page 158.
1. Remove the rear panel of the plasma power supply. Refer to Remove the external panels from
the system components on page 92.
2. Put End A (Figure 40) of the serial RS-422 cable through the hole in the bottom of the rear
compartment in the plasma power supply. Refer to Figure 41 on page 153.
3. Connect End A of the serial RS-422 cable to the correct connector on the control board in the
plasma power supply:
For systems with multiple plasma power supplies, use the top connector (J12) for the
CNC. Use the bottom connector (J13) to connect to the next plasma power supply.
For systems with only one plasma power supply, you can use either connector to
connect to the CNC.
4. Connect the End B (Figure 40) of the cable to the CNC.
5. If you are only monitoring with RS-422 serial, you are done. If you want to operate the cutting
system, go to step 6.
6. You must connect to the plasma power supply with discrete. Refer to How to connect to the
plasma power supply with discrete on page 154.
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