485采集模块DAM-3000用户手册(V6.10)(6)

上位机软件看门狗命令···································································································110

数码管显示命令··············································································································112

电量模块命令··················································································································114

4.11 温、湿度命令··················································································································116

获得环境温度··········································································································116 获得环境湿度··········································································································116

4.11.1 4.11.2 4.12

模块型号与命令字对应表·······························································································117

第1章 简介

1.1 模块概述

DAM-3000系列分布式采集模块是通用传感器到计算机的便卸式接口模块，产品经济且性能可靠稳定，广泛适用于各种工业环境，覆盖了工业I/O信号标准，例如，模拟量输入/输出：电压/电流、热电偶、热电阻、应变片输入；电流/电压输出；数字量输入/输出：开关量输入；集电极开路输出、继电器输出；计数/测频等。DAM-3000系列既有内置的微处理器和坚固的工业级塑料外壳，还可以独立提供智能信号处理、模拟量输入/输出、数字量输入/输出、数字显示和RS-485通信等功能。DAM-3000系列网络配置灵活性强，非常适合分散的I/O系统，只需两根信号线就可以建立起一个多点的分布式RS-485网络。

1.2 RS-485

DAM-3000系列模块使用EIA RS-485通讯协议，该通讯协议采用双向平衡式传输线路标准，可实现真正的多点双向通信。EIA RS-485是专为工业应用开发的通信协议，具有抗干扰性能好、布线方便、传输距离远等特性。DAM-3000系列模块具有系统远距离高速收发数据的能力。模块均使用了光隔离器，具有很强的抗干扰性能。

1.3 模块特性 1.3.1 远程可控

DAM-3000系列模块均配置有高级控制软件，用户可以通过此软件对远程I/O模块进行控制。用户所设定的重要参数均会保存在EEPROM中，即使突然掉电，系统也会保存这些参数；而且此控制软件操作方便，安装简单，大大简化了工作过程。

1.3.2 内置双看门狗

DAM-3000系列模块内部采用双看门狗电路，即：硬件看门狗和软件看门狗。其中硬件看门狗会自动监测模块的运行状态，一旦模块死机或供电异常就会自动复位，同时模块的 …… 此处隐藏：178字，全部文档内容请下载后查看。喜欢就下载吧 ……