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紧凑型I/O模块
摘要RMIO是一种通用、紧凑、微处理器控制的通信模块其I/O组合经过优化，可控制小型HVAC机组、风扇和地板供暖。它通过RS485总线与Modbus RTU（从属）通信，因此可以很容易地集成在一系列控制系统中。
应用•小型换热站、风扇和IRC的紧凑型I/O模块
应用程序、大型系统的附加模块、数据采集。
功能RMIO包含输入和输出（4×模拟输入，2×模拟输出，4×数字输入，7×数字输出）。输入和输出通过RS485控制Modbus RTU。在单独的文档中查找Modbus寄存器表。通用紧凑型模块RMIO是旧MMIO模块的替代品。
通信电路有过电压保护和电流隔离来自模块的其他部分。如果模块作为第一个或最后一个安装在总线，将总线端DIP开关设置为ON以终止总线。模块已安装在标准DIN导轨上。位于外壳内部的两个LED可实现快速诊断–权力和通信。
RMIO模块固定在标准DIN导轨上（通过卡扣）。
所有模块设置都备份在EEPROM芯片中。
有关连接示例，请参阅domat-技术应用说明。Modbus地址可设置如下：-硬件方面：使用DIP开关。开关增加了其位重量从右到左，参见示例图，其中地址21是通过激活位权重分别为16、4和1的开关4、6和8。有效的可设置范围是1到254。地址0（所有开关都关闭）表示地址设置为Modbus表中输入的地址。地址255（所有开关打开）使模块进入INIT模式，其中Modbus地址为1通信参数设置为N、8、1，见下图。在模块关闭并再次打开后，所有更改均适用软件方面，使用ModComTool软件，默认地址（出厂设置）为1，默认通信参数为9600、8、N、1。奇偶校验位和停止位可以在Modbus寄存器1005 LSB。
仅当硬件寻址开关设置为所有更改均在模块关闭并再次打开后生效。安装RMIO模块固定在标准DIN导轨上（通过卡扣）。
从DIN导轨上拆卸模块时，请按以下步骤进行：将螺丝刀放入位于模块（1）底部中间的塑料槽。
然后按螺丝刀向上（2）。然后，向上倾斜模块即可将其拆下该设备用于监测和控制加热、通风和空气调节系统。不得用于保护人员免受健康风险或死亡，作为安全元件，或在其故障可能导致物理损坏的应用中或财产损失或环境损害。与设备操作相关的所有风险必须与整个系统的设计、安装和运行一起考虑设备所属的控制系统。
Compact I/O module Summary
The RMIO is a universal, compact, microprocessor controlled, communicative module with its I/O mix optimized for control of small HVAC units, fancoils, and floor heating. It communicates over a RS485 bus with Modbus RTU (slave) and thus can be easily integrated in a range of control systems. Application • Compact I/O module for small heat exchange stations, fancoils and IRC applications, add-on module for larger systems, data acquisition. Function The RMIO contains inputs and outputs (4× analogue input, 2× analogue output, 4× digital input, 7× digital output). The inputs and outputs are controlled over RS485 with Modbus RTU. Find the Modbus register table in a separate document. The universal compact module RMIO is replacement of the older MMIO module. The communication circuits are protected against overvoltage and galvanically isolated from other parts of the module. If the module is installed as the first or the last on the bus, set the BUS END DIP switches to ON to terminate the bus. The module is installed on a standard DIN rail. Two LEDs located inside of the housing enable fast diagnostics – power and communication. The RMIO module is fixed on standard DIN rail (by snapping). All module settings are backed up in an EEPROM chip. See domat - Technical application notes for connection examples.
The Modbus address can be set as follows:
- hardwarewise: using DIP switches. The switches increase their bit weight from right to left, see image with example where address of 21 is set by activation of switches 4, 6, and 8 with bit weight of 16, 4, and 1 respectively. Valid settable range is 1 to 254. Address 0 (all switches OFF) means that the address is set as entered in the Modbus table. Address 255 (all switches ON) brings the module to INIT mode, where Modbus address is 1 and communication parameters are set to N, 8, 1, see image below. All changes apply after the module is switched off and on again.- softwarewise using the ModComTool software, available for free at www.domat.cz. The default address (factory setting) is 1, default communication parameters are 9600, 8, N, 1. Parity and stopbits can be set in Modbus register 1005 LSB. The software address is only active if the hardware addressing switch is set to 0. All changes apply after the module is switched off and on again. Installation The RMIO module is fixed on standard DIN rail (by snapping). When removing the module from the DIN rail proceed as follows: Place a screwdriver in the plastic slot which is in the middle of bottom part of the module (1). Then push the screwdriver upwards (2). After that, the module can be removed by tilting it upwards
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