Modbus RTU I/O Expansion Unit
Modbus is a communication protocol developed by Modicon in 1979 for linking devices with Modicon PLCs using a master/slave relationship. Different versions of Modbus today include Modbus RTU, Modbus ASCII and Modbus TCP. Where Modbus RTU and ASCII are based on serial communication like RS-232 and RS-485, and Modbus TCP is based on Ethernet communication. It's a standard, truly open and widely used in industrial automation field.

The iP-8000-MRTU series is an I/O unit with Modbus protocol. It supports most of high profile I-8K and I-87K series I/O modules. SCADA and HMI software can easily access variant I/O signals via the iP-8000-MRTU.

智慧型 USB I/O 擴充單元
此單元是用RS-485 網路來擴充上面的 I-87K 系列的 I/O 模組。它具備一個電源模組、一個 USB 的通訊介面、一個 CPU 模組和數個 I/O 插槽。

最重要的特色是

1. 熱插拔 (Hot Swap)
   更換或插入 I-87K 模組時，USB-87Pn 並不需要關閉電源。因此整個系統可以持續運作，而無任何中斷。
   
2. 自動組態 (Auto configuration)
   I-87K 模組的組態可以被預先設定好，並儲存於 USB-87Pn 上的記憶体。當USB-87Pn 的電源啟動時，或是某一個 I-87K 模組插入時，這個 USB-87Pn 就會自動檢查、回存組態設定到每個需要更新組態的 I-87K 模組上。

只有高版的 I-87K 模組可以插在這個單元上面。

Modbus TCP I/O Expansion Unit
Modbus is a communication protocol developed by Modicon in 1979 for linking devices with Modicon PLCs using a master/slave relationship. Different versions of Modbus today include Modbus RTU, Modbus ASCII and Modbus TCP. Where Modbus RTU and ASCII are based on serial communication like RS-232 and RS-485, and Modbus TCP is based on 乙太網 communication. It's a standard, truly open and widely used in industrial automation field.
The iP-8000-MTCP series is an I/O unit with Modbus protocol. It supports most of high profile I-8K and I-87K series I/O modules. SCADA and HMI software can easily access variant I/O signals via the iP-8000-MTCP.

Intelligent Remote Redundant Ethernet I/O expansion unit
The unit is the intelligent remote redundant I/O unit with Modbus TCP protocol. It can be equipped with 2 power modules, 2 communication module, 8 I/O modules. The unit offers redundancy options for various functions- ranging from power redundancy to I/O redundancy. Besides, there are most of I/O modules, such as DI, DO, AI, AO, PI, PO, HART and etc, can be used in the units. Only the F-8K modules can be plugged in the unit.

The most important features are

1. Auto configuration
   Each slot configuration can be pre-configured and stored in the CPU module, Once a module is plug in, the CPU module will write the pre-configured data to the module.
2. Hot Swap
   All F-8K modules circuit design allow it to be hot swapped. The unit don't need to power off while swapping I/O modules.
3. Redundancy
   Support redundant communication, power and I/O function to enhance the reliability of the system.
4. Open Communication protocol
   Due to the Modbus TCP protocol, iDCS-8830 can be integrated in various PC/PAC/PLC system easily.