Mô Đun Chuyển Đổi Ttl Sang Rs485 Rs485 Chuyên Dụng

Tl rs485 rs485 ttl uart


The power supply of this product is wide voltage (3.0v~30v) And achieves compatibility of 3.3v systems with 5.0v systems, 3.3v and 5.0 v signals match. This product has connecting terminals and silicone gel line, direct connection use, all imported chips are fully used, strong performance, mine-protection design, strong anti-interference capability, industrial level

This transmission module realizes the interchange between ttl signal and rs 485 signal, but you must know, 485 is semi-duplex communications, this means of communication can achieve two-way communication, but it cannot be done simultaneously in both directions, it must be conducted alternately That is to say, each section of a communication channel can be a sender, it may be a receiver, but at the same moment, information can only have one transmission direction.



The automatic flow control of rs 485 signal is realized, automatic switching direction, using this module is as simple as you do serial port

Port rate: 110~256000bps

Modular highlights:

(1) Wide voltage power supply (3.0v~30v), limit voltage 33v, recommended for use in 30v, the minimum voltage is higher than 2.8v.

(2) Compatibility 3.3v and 5.0v signals, all matching modules

(3) There are very high emc and emi properties.

(4) Use original imported chip, industrial design, strong anti-interference capability, at the same time, strong 485 mine protection design, can be used in industrial sites and in harsh conditions in the field, working temperatures-- 40° c to + 85° c, transmission distance up to kilometer (Test of 2x1.5 cables used for 850 meters, recommended for use within 800 meters, more than 800m, add repeaters)

(5) With connecting terminals and silica gel wires, it 's very convenient to use.

(6) Rxd、 txd, 2007-12-20 19:00

Modular features:

(1) This module takes full account of the 485 bus lightning protection design and anti-interference design, extremely high emc (Electromagnetic compatibility)、 emi (Electromagnetic anti-interference) Performance, long-range transmission in the field, connecting the geodetic end of the module into the earth, good anti-jamming and mine-proof role, make the 485 bus safer Indoor short distance transmission can not be connected to the earth.

(2) Standard 2.54 spacing needle, facilitate your secondary development

(3) 120 european matching resistance, short r0 can match resistance, short connections are recommended when long distance transmissions are recommended.

(4) Support for multi-computer communications, the same network can connect at least 40 nodes

(5) Heat plugs can be performed, no signal embolism occurs



(6) Anti-jamming walking lines and copper paving mode, prevent signal interfe