Default firmware features:

• Supports Modbus/RTU to Modbus/TCP converter.
  I-8000E -MTCP's COM Port can be setted as gateway mode, and connect to Modbus/RTU device. Host PC can link the Modbus/RTU device by Modbus/TCP protocol with enthernet.
• Supports VxComm technique for every COM port of controllers.
  When the serial device does not support Ethernet, user still can use virtual COM Port to access the device by Ethernet . Just set I-8000E -MTCP's COM Port as VxComm mode, and install VxComm driver on PC, then mapping a virtual COM Port to I-8000E -MTCP's COM Port. After all, user's program can communicate with serial COM Port of remote device by standard RS-232 process.
• Supports 8K and 87K DI/DO/AI/AO modules.
  Refer to Modbus Utility on line help
• Automatically scan I/O modules and range I/O registers address to continuous.
  You can plug I/O modules in any slot. The Modbus firmware can automatically scan all slots and range I/Os to registers in continuous.You can use Modbus Utility to see the I/O address mapping.
• Support power on value and safe value for analog/digital output module
  Refer to Modbus Utility on line help
• Allowed several host PCs (client) access simultaneously.
  It depends on how many serial ports on the 7188E/8000E and how many serial ports of 7188E/8000E that each PC connected on it. See FAQ for detail, http://www.icpdas.com/faq/7188e/hardware/003.htm
• Firmware modifiable
  We provide the Modbus SDK allowing users to develop their custom Modbus firmware.

• Supports extra user-defined command protocol (TCP/P)
  Modbus/TCP support 2 basic data format (bit and 2-byte integer). If the client did not spport Modbus protocol or if the client use other format of data(such like character, float...), user still can define his own particular protocol for any format of data.
• Register based programming method (easy to use)
  Modbus function supports 4 register able (iMemory_AI, iMemory_AO, iMemory_DI, iMemory_DO), you can use them to save user defind data(such like expanded I/O data). When Modbus/TCP client query I-8000E -MTCP main control unit, Modbus main function will return the data of the 4 register table to client.
• Provides user-defined registers
  I/O on slot will use the register at begining of these 4 register table. Each register table has most 300 register memories for I/O on slot. User can define other registers that not used.
• Communicate with Modbus/RTU device
  By using ModbusMaster2Slave function (define in MBTCP_8E.h), Modbus/RTU device can be integrated to I-8000E -MTCP register easily. I-8000E -MTCP requires the Modbus/RTU device I/O data, put then into its registers. The hoat PC can get all I/O data by reading the registers of I-8000E -MTCP.
• Communicate with other device
  For serial device which did not support Modbus/RTU protocol, we defined functions to link them and put the I/O data to registers. User can modify the device to support Modbus/TCP.
• Firmware programmable
  Modbus firmware is based on Xserver SDK. For fireware development, refer Xserver demo. Download Xserver demo on http://ftp.icpdas.com/pub/cd/8000cd/napdos/8000/843x883x/tcp/xserver/xserver.htm