1. Overview

This guide explains how to connect an OSDP keypad (Cidron) to the PWRCAN module using RS485.

  • DIP switch configuration
  • RS485 activation
  • Power setup
  • Wiring

2. Required Components

  • CoreS3
  • PWRCAN module
  • Cidron OSDP keypad
  • Dedicated power supply for keypad (12V, 2A)
  • RS485 wiring

3. PWRCAN Configuration

3.1 DIP Switch Setup

Activate the following DIP switches in the RS485 section:

DIP 2 → ON → G17
DIP 7 → ON → G14

3.2 Enable RS485

RS485 switch → ON

4. Power Setup (Important)

Do NOT power the keypad from the PWRCAN module.

  • Use a dedicated transformer / power supply
  • Typically 12V DC (confirm with keypad specs)

Reason: Keypads can draw unstable current and cause communication issues.

5. RS485 Wiring


PWRCANCidron Keypad
AA / TX
BB / RX
+DC+
GGND

6. OSDP Communication Notes

  • Protocol: OSDP over RS485
  • Check keypad address. The "Cidron" keypad must programmed before to use OSDP and to have address 0.

7. Quick Summary

PWRCAN → Cidron

A → A/TX
B → B/RX
+ → DC+
G → GND
DIP switches:
2 = ON (G17)
7 = ON (G14)
RS485 = ON