描述
基本信息
品牌：Foxboro
型号：FBM231
系列：I/A系列
重量：约0.284kg
输入电压：24V DC±5%，-10%
最大功耗：7W
工作温度：-20℃至+70℃
技术参数
端口配置：具有四个串行端口，每个端口可通过软件单独配置为RS-232、RS-422或RS-485接口。
通信能力：每个FBM231在RS-485模式下最多可访问64个设备进行数据读写，从与之相连的Foxboro控制站起，最多可建立2000个分布式控制接口（DCI）数据连接以进行数据读写。
终端组件：每个FBM231配备两个终端组件（TA），TA有四个DB-25电缆连接器用于RS-232通信接口，对于RS-422和RS-485接线有三层压缩螺钉或环形接线片连接，且内置有开关可选终端电阻器。
功能特点
冗余功能：一对FBM231模块可在FBM级别提供冗余，其中一个为Master模块，另一个为Tracker模块。当I/O驱动程序检测到实际问题（如心跳故障）时，角色会自动切换，用户也可通过SMDH随时手动切换角色。
协议兼容性：I/O软件驱动程序可从可用协议库中下载，支持多种协议，可与第三方设备通信。
高可靠性：模块采用紧凑、坚固的挤压铝外壳，具备物理和电气电路保护，可在G3级（恶劣）环境中使用，模块对的冗余设计提供了高子系统可用性。
灵活配置：端口配置程序允许轻松设置每个端口的通信参数，如通信接口标准、波特率、奇偶校验等。
Basic Information
Brand:Foxboro
Model:FBM231
Series:I/A Series
Weight:Approximately 0.284kg
Input Voltage:24V DC±5%,-10%
Maximum Power Consumption:7W
Operating Temperature:-20°C to+70°C
Technical Parameters
Port Configuration:Features four serial ports,each individually software-configurable as an RS-232,RS-422,or RS-485 interface.
Communication Capability:Each FBM231 can access up to 64 devices for data reading and writing in RS-485 mode.From a connected Foxboro control station,up to 2000 Distributed Control Interface(DCI)data connections can be established for data reading and writing.Termination Assemblies:Each FBM231 comes with two termination assemblies(TAs).The TAs have four DB-25 cable connectors for RS-232 communication,three-tier compression screw or ring lug connections for RS-422 and RS-485 wiring,and built-in switch-selectable termination resistors.
Features
Redundancy:A pair of FBM231 modules provides redundancy at the FBM level,with one module acting as the Master and the other as the Tracker.Roles are automatically switched when the I/O driver detects a problem(such as a heartbeat failure),or users can manually switch roles at any time via SMDH.
Protocol Compatibility:I/O software drivers are downloadable from a library of available protocols,supporting multiple protocols and enabling communication with third-party devices.
High Reliability:The modules feature a compact,rugged extruded aluminum housing with physical and electrical circuit protection for use in Class G3(harsh)environments.The redundant design of the module pair provides high subsystem availability.Flexible configuration:The port configuration program allows easy setting of communication parameters for each port,such as communication interface standard,baud rate,parity,etc.
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