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 扩充单元
此单元是用RS-485 网路来扩充上面的I-87K 系列的I/O 模组。它具备一个电源模组、一个USB 的通讯介面、一个CPU 模组和数个I/O 插槽。

最重要的特色是

1. 热插拔 (Hot Swap)
   更换或插入I-87K 模组时，USB-87Pn 并不需要关闭电源。因此整个系统可以持续运作，而无任何中断。
   
2. 自动组态 (Auto configuration)
   I-87K 模组的组态可以被预先设定好，并储存于USB-87Pn 上的记忆体。当USB-87Pn 的电源启动时，或是某一个I-87K 模组插入时，这个USB-87Pn 就会自动检查、回存组态设定到每个需要更新组态的I-87K 模组上。

只有高版的I-87K 模组可以插在这个单元上面。

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 乙太网 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.