Selection Guide
What is...
RU-87Pn series is a remote intelligent I/O expansion unit to expand I-87K series I/O modules over the RS-485 for industrial monitoring and controlling applications. The unit supports more than 30 I/O modules including analog input/output, digital input/output, counter/frequency I/O modules.

RU-87Pn is designed to operate in harsh and noisy environment, so the hardware is manufactured with wide power input range (10~30VDC),isolated power and operating temperature (-25J ~ +75J). It simplifies installation and maintenance of I/O modules with hot swappable and auto configuration, fault and error detection, dual watchdog, programmable power on and safe values.

Various software development kits (SDK) and demos are provided, such as DLL, ActiveX, Labview driver, Indusoft driver, Linux driver, OPC server, etc. The I-87K series I/O modules plugged in the RU-87Pn can be easily integrated into variant software system.
Taiwan patent
China patent
USA patent
Germany patent
  Hot Swap  
The RU-87Pn doesnt need to shut down its power to replace or plug I-87K I/O modules. Therefore, the whole system can keep operating without any interruption.
  Auto Configuration  
Configurations of I-87K I/O modules can be pre configured and stored in the nonvolatile memory of the RU-87Pn. When the RU-87Pn is power on or an I-87K I/O module is plug in, the RU-87Pn automatically check and restore these configurations to each I-87K I/O modules on it.
  Easy Duplicate System  
Using the DCON Utility, you can easily make a backup of the I-87K module configurations and write to another RU-87Pn. This design can easily and quickly duplicate many RU-87Pn.
  Easy Maintenance and Diagnostic  

The basic configurations (includes station number, baudrate) are set by the rotary and DIP switch. The operator can use only one screwdriver to set the RU-87Pn. And there are several LED status indicators to show whether I-87K modules are configured and work properly.

If one I-87K module is damaged, the operator just need to get one good I-87K module with the same item number to replace the damaged one. And then check the LED indicators to know whether the replacement is performed correctly. The switch and LED design makes it easy for maintenance. There is no PC and Notebook needed.

  • RS-485 industrial multi-drop network

The RU-87Pn uses the industrial EIA RS-485 communication to transmit and receive data over long distance (1.2 Km).

  • DCON protocol

I-87K series I/O modules plugged in a RU-87Pn provide a simple command/response protocol (Called DCON protocol) for communication. All command/response are in easy used ASCII format.

  Rugged Industrial Environment  
  • Programmable Power On Value & Safe Value

The DO and AO type I-87K I/O modules provide programmable Power On Value & Safe Value. When RU-87Pn is power on or the module is plugged in, the DO or AO modules are acted as their Power On Value. When host watchdog is acted, DO or AO modules are acted as their Safe Value.

  • Dual watchdog design

The I-87K series I/O modules provide module watchdog and host watchdog. The module watchdog is a hardware watchdog, the host watchdog is a software watchdog. The module watchdog is designed to automatically reset the microprocessor when the module hangs. The host watchdog monitors the host controller (PC or PLC). The output of module can go to the safe value state when the host fails.

  • Wide range power input (10 ~ 30 VDC)
  • Wide range operating temperature (-25 J ~ +75 J)
  Fully Software Support  

The free charge software utility and development kits include

  • DCON Utility: for configuration
  • OPC Servers:

OPC is an industrial standard interface based on OLE technology. With the OPC server, I/O modules can be easily integrated to any software that has OPC client capability.

  EZ Data Logger  
EZ Data Logger is a small data logger software. It can be applied to small remote I/O system. With its user-friendly interface, users can quickly and easily build a data logger software without any programming skill.
  Variant Software Develop Toolkits  
  DLL, ActiveX, Labview driver, Indusoft driver, DasyLab driver, Linux driver  
Copyright© ICP DAS Co., Ltd. All Rights Reserved