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Splitter Mode

The splitter mode is used to connect an IP port to a set of serial ports or to connect a serial port to a set of other serial ports. It can be used in one of these modes at a time, IP or serial, but not both at once.

Modbus Broadcast

Messages from the modbus master connected to the source port are broadcast to all of the destination ports. If one of the destination ports accepts the modbus master request then the response is returned to the source port.

The source port is connected to a modbus master and each enabled COM port is connected to a modbus slave.

The configuration parameters are:

Protocol Type of modbus and transport method to use.
IP Port IP port number. It is best to use 1024 and above since lower numbers are well-known ports. A modbus master is connected to this port.
Src Port Serial port number in the range 0 to 4. A modbus master is connected to this port.
Dst Port Serial port number in the range 0 to 4. A modbus slave is connected to each of these ports.

Example #1: Modbus IP Splitter

The primary link uses modbus IP to connect the satellite dish to both modbus slaves. The secondary link uses modbus broadcast to connect the IP Host to both modbus slaves.

Modbus IP Broadcast

Example #2: Modbus Serial Splitter

The primary link uses modbus IP connect the satellite dish to both modbus slaves. The secondary link uses modbus broadcast to connect the serial modem to both modbus slaves.

Modbus Serial Broadcast

broadcast.txt · Last modified: 2023/08/29 14:19 by