CHESTER-X2

This article describes the CHESTER-X2 extension module.

Module Overview

CHESTER-X2 provides TTL/UART interface and RS-485 interface (e.g., for Modbus communication).

CHESTER Pin Configuration Diagram

Pin Configuration and Functions

Position	Signal Name	Signal Description
1	GND	System ground signal
2	VDD	System VDD rail 3.0 V
3	RX	UART receiver input
4	TX	UART transmitter output
5	EN	Enable input
6	B	Bus input/output
7	A	Bus input/output
8	+V	System positive rail (*)

*Note: The system positive rail voltage depends on CHESTER power supply option.

Schematic diagram

A schematic diagram is useful if you program low-level hardware-related code or if you're just curious about how the system is designed.

• Schematic (PDF)
• Interactive PCB connector, part, testpoint and signal browser

Module Drawing