Gefran Modbus/TCP slave- Modbus RTU Master

The GFX4-ETH module can be installed inside GFX4/GFXTERMO4 products and expands communication by means of the Modbus/TCP protocol. The module has two communication channels: • the first channel is a serial port with Modbus RTU protocol, and connects a maximum of four GFX4/GFXTERMO4 devices including the product on which the module is installed, for total of 16 controlled zones (4x4); • the second channel is a ethernet port with Modbus/TCP slave protocol, and lets you connect to a Master Modbus/TCP. The node address is assigned by means of the two rotary switches (1...99) on the product that houses the module or by means of a software message. The network Master (typically a PLC) recognizes the slave node by means of this address. The slave node recognized by the Master consists of the GFX4/GFXTERMO4 that houses the module plus the GFX4/GFXTERMO4 products connected to the Modbus serial port. The expansion can be installed when the above-mentioned products are ordered or at a later date. You can run the following procedures via the Dip-switches: - Dip-switch 1 ON = reset communication parameters of GFX-ETH board - Dip-switch 2 Select baud rate OFF = 100Mbit/s (default) ON = 10Mbit/s