PMM - Power Meter Monitor

PMM0912

UART/TTL to RS485 Converter Module

PMM-da-720-series-image-1-(1).jpg | PMM

KEY FEATURES

  • Compatible with 3.3V and 5.0V power supply and signals
  • Supports baud rate: 110-256000 bps
  • Transmittance distances up to 1200 meters
  • Operating temperature: -40 to 800C
  • Very high EMC and EMI performance
  • RXT and TXD signal indicator LEDs to monitor, send and receive status
  • 120 Ohm terminal resistors
  • Support multi-machine communication, allowing access for up to 32 devices on bus
  • Electrical interference and noise is greatly reduced by the presence of a large copper area
  • Radio transmission anti-jamming and lightning protection
  • Module size: 43mm * 18mm * 3mm
  • Vertical and horizontal mounting options, compatible with standard DIP/SIP pinout
  • RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested
 
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DESCRIPTION

PMM0912 is a TTL to RS485 converter module via MAX485 TTL to RS-485 Interface chipset which allows ICs to use RS-485 differential signaling for robust long-distance serial communications. This module allows for data transmission and communication of a CPU/MCU with any 2-wire RS485 device over large distances up to 1200m (4000’).

Earthing the module by connecting its terminal to ground gives it an excellent anti-jamming and anti-lightning effect, thus making it more secure and perfect for industrial use. Moreover, it has the ability to work under difficult environmental conditions.

BOARD PINOUT

SCHEMATIC DIAGRAM

MULTI-DROP CONNECTION

DIMENSIONS

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