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RS232
- RS-232、RS-422与RS-485都是串行数据接口标准，最初都是由电子工业协会（EIA）制 订并发布的，RS-232在1962年发布，命名为EIA-232-E，作为工业标准，以保证不同厂家产品 之间的兼容。RS-422由RS-232发展而来，它是为弥补RS-232之不足而提出的。为改进RS-232 通信距离短、速率低的缺点，RS-422定义了一种平衡通信接口，将传输速率提高到10Mb/s， 传输距离延长到4000英尺（速率低于100kb/s时），并允许在一条平衡总线上连接最
Schematic
- RS-232 to RS-485/422 Converter schematic. It can support RS-422 and RS-485 to change only two jumppers. And it used general devices. 75176 can be replaced max485, 65LBC184 etc.
LAN-WAN_Rev1.0
- Transporting DNP V3.00 over Local and Wide Area Network. 1 Overview 1.1 Purpose DNP V3.00 (hereafter referred to simply as DNP) was designed for serial point-to-point communication (e.g. RS-232) with limited support for half duplex serial ne
232TO485
- 232直接转成全双工（4线制）485接口 只用一片MAX488即能转换成功，其实是422通信方式，已经测试通过。 带有配套电源电路-232 be transferred directly into a full-duplex (4 wire system) 485 with only a MAX488 that is able to convert successfully, in fact, is a 422 means of communication have been teste
Modbus_over_serial_line_V1_02
- This document describes the MODBUS over Serial Line protocol. MODBUS Serial Line protocol is a Master-Slave protocol. This protocol takes place at level 2 of the OSI model. A master-slave type system has one node (the master node) that issues exp
1
- 介绍了RS-232到RS-485的转换，以及用此拓扑结构在工程实践中的应用-Introduced the RS-232 to RS-485 conversion, and with the topological structure of the application in engineering practice
RS-232RS-422RS-485
- RS-232、RS-422与RS-485标准及应用,详细解答了关于232 485通信的知识-RS-232, RS-422 and RS-485 standard and application, detailed answers to the communication of knowledge about 232,485
RS232
- The Document Gives the basic idea about RS485 communication with the PC. It shows basic hardware arrangement of Rs-232 to 485 converter
RS232-RS485
- 简单的232转485电路图，看完之后也许对你有启发。-Simple 232 to 485 circuit diagrams, and after reading, perhaps you have inspired.
CAN
- 随着工业测控技术和生产自动化技术的不断进步 ,传统的 RS-232、 RS-485和 CCITTV. 24通信技术已不能适应现代化的工业控制需要 ,而现场总线 ( Fieldbus)以其低廉的价格、可靠的性能而逐步成为新型的工业测控领域的通信技术。现场总线是应用在生产现场 ,在微机化测量控制设备之间实现双向串行多节点数字通信的系统 ,是一种开放式、数字化、多点通信的底层控制网络。 汇集了计算机技术、网络通信技术和自动控制技术 ( 3C)的现场总线技术 ,从 20世纪 80年代开始发展起来 ,并逐