Depending on the ERD model, you can have a serial port for different uses, as a transparent serial port to be accessed remotely, as a MODBUS serial port, etc.
We now detail the parameters that can be configured in the serial port.
Baud Rate: Transfer speed of the serial port (2400, 4800, 9600, 19200, 38400, 57600, 115200)
Data bits: Can be 7 or 8 bits
Parity: Error control system (none, even, odd)
Flow control: Allows automatic control of communication traffic according to the network availability. It is generally used for massive data transfer to avoid loss of information (on , off)
Stop bits: Allows to define the number of stop bits (1, 2)
The ERD will attempt to group several data before sending the packet through the network; this makes a better use of the bandwidth and reduces communication costs. The implemented criteria for the packet end are the following:
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If the end character criteria is enabled and the time window is disabled, the ERD will store the received data for an indefinite time until the configured character is received or the 1000 characters are accumulated. |
If both criteria are used, whichever is the earliest will cause data to be sent.
