I/O Expansion Units
Programmable Automation Controller Products
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Website: http://www.icpdas.com E-mail: service@icpdas.com Vol. PAC 1.0.02 (2011.JAN.07)
RS-485 I/O Expansion Unit
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Hot Swap
Auto
Confi guration
Easy
Duplicate
System
Easy
Maintenance
Easy
Diagnosis
Rugged Industrial Environment
˙
Power On Value & Safe Value
˙
Dual Watchdog
˙
+10 ~ +30 V
DC
Power Input
˙
-25 ~ +75 °C Operating Temperature
˙
ESD & Surge Protection
● RU-87Pn Introduction
● Features
5.2. RS-485 I/O Expansion Unit
The RU-87Pn series RS-485 remote I/O expansion unit is designed to
acquire and control remote I/O through RS-485 connections. It comprises
• A CPU module with none-volatile memory to backup/restore I/O
module confi gurations; LED indicators to diagnose the I/O module;
and a RS-485 port for 1.2 Km long distance communication.
• A power module
• A backplane with a number of I/O slots for fl exible I/O confi guration.
With its patent-pending technologies, namely auto configuration and
hot swap, it saves lots of labor on the set up and maintenance of the
automation systems. Reliable 3-piece construction enables users to hot
swap modules during operation, without rewiring. All I/O module data are
backed up in the non-volatile memory of the RU-87Pn. After hot-swapping a
module, all settings are automatically loaded to recover.
Furthermore, with the RS-485 network communication interface and more
than 30 I/O modules for choice, users can apply the unit to nearly any
automation system.
5. Communication
• 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 provides a simple command/response protocol (named DCON protocol) for communication.
All command/response are in easy use ASCII format.
1. Hot Swap
Reliable 3-piece construction enables users to hot swap modules during
operation, without rewiring. All I/O module data are backed up in the non-
volatile memory of the RU-87Pn. After hot-swapping a module, all settings are
automatically loaded to recover.
2. Auto Confi guration
The I-87K I/O modules can be pre-confi gured and backed up in the non-volatile
memory of the RU-87Pn. When the RU-87Pn is power on or plugged in, the RU-
87Pn will automatically checks and restores these confi gurations to each I-87K I/
O modules on it.
3. Easy Duplicate System
Using the DCON Utility, you can easily make a backup of the I-87K module
confi gurations and write to another RU-87Pn. This design can easily and quickly
duplicate many RU-87Pn.
4. Easy Maintenance and Diagnosis
The basic confi gurations (includes station number, baudrate) are set by the rotary
and DIP switches. 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
confi gured and work properly.
If one I-87K module fails, the operator just needs to replace it with one good I-87K
module with the same item number. And then checks 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.
I/O Expansion Units
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ICP DAS CO., LTD
Professional Provider of High Quality Industrial Computer Products and Data Acquisition Systems Vol. PAC 1.0.02 (2011.JAN.07)
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RS-485 I/O Expansion Unit
RS-485 I/O Expansion Unit
6. Rugged Industrial Environment
• Dual watchdog design
The I-87K series I/O modules provides 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.
• 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 plugged in, the
DO or AO modules output preconfi gured Power On Value. When host watchdog is acted, DO or AO modules output preconfi gured Safe Value.
• Wide range power input (10 ~ 30 V
DC
)
• Wide range operating temperature (-25 ~ +75°C)
7. 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.
8. 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.
9. Various Software Develop Toolkits
DLL, ActiveX, Labview driver, Indusoft driver, DasyLab driver, Linux driver