USBACAB230 and DVPCAB215 are both programming cables that are used to connect Delta PLCs to a PC. The USBACAB230 is a USB to RS232 adapter cable while the DVPCAB215 is a serial RS232 interface cable. These cables are used to program and configure Delta PLCs such as the ES, EX, EH, EC, SE, SV, and SS series.
Delta PLC to PC Communication Cable Pin Diagram

7, 8 short circuit
1,4,6 short circuit
Delta PLC Software
DELTA_IA-PLC_WPL_V2.50_SW_20201119