Create a 2‑wire RS‑485 connection from the display to PTB330.
- 1
- Flat cable pins
- 2
- Selection switches
- 3
- Screw terminals for wiring
- Connect the display COM1 or COM2 R− to PTB330 RS‑485‑1 module screw terminal 4 (D0−).
- Connect the display COM1 or COM2 R− to PTB330 RS‑485‑1 module screw terminal 5 (D1+).
- Set all the selection switches on the PTB330 RS‑485‑1 module to OFF position.
- Make sure that the DIP switches in the display are set to RS‑485 (2‑wire) mode.
- Configure the COM port settings according to the wiring.