产品细节介绍
XVC767AE102控制板
电气接口
硬件或电气接口是以下之一：
•后端子连接器的三个2线RS485端口之一，
•前面板连接器的RS232
•光纤连接。
在双线RS485链路中，数据流是双向的。RS485和RS232端口的数据流都是半双工的。那就是，数据从不同时发送和接收。RS485线应以菊花链配置连接（避免星形连接）在链路的每一端安装终端网络，即在主端和从端离主人最远。终端网络应包括120Ω 与1 nF陶瓷电容器串联的电阻器与Belden 9841 RS485导线一起使用时。端接电阻器的值应等于特性线路阻抗。这大约是120Ω 用于标准#22 AWG双绞线。屏蔽线应始终用于最小化噪音。极性在RS485通信中很重要。必须连接每个369的每个“+”端子
使系统运行。有关正确的详细信息，请参阅第3-13页第3.3.14节：RS485通信串行端口接线。
当使用光纤链路时，来自369的Tx应连接到主设备的Rx和来自369应连接到主设备的Tx。
10.1.2 PROFIBUS通信
369电机管理继电器支持Profibus DP协议作为从设备，可以从ProfibusDP主设备读取和写入，该主设备可以读取369_xxxx格式的DMD文件。gs*文件。
继电器支持以下配置和指示：
•现场总线类型：PROFIBUS-DP EN 50170（DIN 19245）第3部分。
•支持的扩展功能：通过邮箱报文的诊断数据。
•自动波特率检测9.6Kbit-12Mbit。
•地址范围：1-126，通过369PC程序或前键盘设置。
•输入数据：220字节-周期性。
•诊断数据：26字节-非周期性。
有关完整详细信息，请参阅第10-2页第10.2节：PROFIBUS协议。
10.1.3 MODBUS通信
369执行AEG Modicon Modbus RTU串行通信标准的子集。许多流行的可编程控制器通过合适的接口卡直接支持该协议，允许继电器的直接连接。
虽然Modbus协议独立于硬件，369接口包括三个2线RS485端口和一个RS232端口。
Modbus是一种单主、多从协议，适用于RS485硬件提供的多点配置。
在这种配置中，单个通信信道上最多可以将32个从属设备串接在一起。
369总是一个奴隶。它不能作为主程序进行编程。计算机或PLC通常被编程为主机。Modbus协议有两个版本：远程终端单元（RTU，二进制）和ASCII。只有RTU版本是369支持。使用读写寄存器命令可以实现监控、编程和控制功能。有关完整详细信息，请参阅第10-8页第10.3节：MODBUS RTU协议。
ELECTRICAL INTERFACE
The hardware or electrical interface is one of the following: • one of three 2-wire RS485 ports from the rear terminal connector, • the RS232 from the front panel connector • a fibre optic connection. In a 2-wire RS485 link, data flow is bidirectional. Data flow is half duplex for both the RS485 and the RS232 ports. That is, data is never transmitted and received at the same time. RS485 lines should be connected in a daisy chain configuration (avoid star connections) with a terminating network installed at each end of the link, i.e. at the master end and at the slave farthest from the master. The terminating network should consist of a 120 Ω resistor in series with a 1 nF ceramic capacitor when used with Belden 9841 RS485 wire. The value of the terminating resistors should be equal to the characteristic impedance of the line. This is approximately 120 Ω for standard #22 AWG twisted pair wire. Shielded wire should always be used to minimize noise. Polarity is important in RS485 communications. Each '+' terminal of every 369 must be connected together for the system to operate. See Section 3.3.14: RS485 COMMUNICATIONS on page 3–13 for details on correct serial port wiring. When using a fibre optic link the Tx from the 369 should be connected to the Rx of the Master device and the Rx from the 369 should be connected to the Tx of the Master device. 10.1.2 PROFIBUS COMMUNICATIONS The 369 Motor Management Relay supports Profibus-DP protocol as slave that can be read and written to, from a ProfibusDP master which can read DMD file in the form of 369_xxxx.gs* files.
The relay supports the following
configurations and indications: • Fieldbus type: PROFIBUS-DP EN 50170 (DIN 19245) Part 3. • Extended functions supported: Diagnostics Data via mailbox telegram. • Auto baud rate detection 9.6Kbit - 12Mbit. • Address range: 1-126, setting via 369PC Program or front keypad. • Input data: 220 bytes - cyclical. • Diagnostic data: 26 bytes - non-cyclical. See Section 10.2: PROFIBUS PROTOCOL on page 10–2 for complete details. 10.1.3 MODBUS COMMUNICATIONS The 369 implements a subset of the AEG Modicon Modbus RTU serial communication standard. Many popular programmable controllers support this protocol directly with a suitable interface card allowing direct connection of relays. Although the Modbus protocol is hardware independent, the 369 interfaces include three 2-wire RS485 ports and one RS232 port. Modbus is a single master, multiple slave protocol suitable for a multi-drop configuration as provided by RS485 hardware. In this configuration up to 32 slaves can be daisy-chained together on a single communication channel. The 369 is always a slave. It cannot be programmed as a master. Computers or PLCs are commonly programmed as masters. The Modbus protocol exists in two versions: Remote Terminal Unit (RTU, binary) and ASCII. Only the RTU version is supported by the 369. Monitoring, programming and control functions are possible using read and write register commands. See Section 10.3: MODBUS RTU PROTOCOL on page 10–8 for complete details.
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