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The operating principle is the following:
When the concentrator receives a response from the device, it will impose a delay equivalent to the
“InterFrame” parameter between the last byte of the last received frame and the rst byte of the next
frame it sends to that device. The time is valid for the entire bus. So, if a new frame is emitted to
another device than the previous one, the delay will nevertheless be applied. Below is a serial interface
conguration example:
type;baudrate;data_bits;parity;stop_
bits;wires;protocol;interframe(ms)
SERIAL1;9600;8;N;1;2;Modbus;0
SERIAL2;1200;8;N;1;4;SMANET;0
SERIAL3;19200;8;N;1;2;PW1;0
In this example, the rst serial port is congured at 9600 bauds, 8 data bits, no, parity, 1 stop bit, 2
communication wires, “modbus” protocol and no inter-frame time.
The 2nd serial port is congured at 1200 bauds, 4 wires to be used with the SMA-Net protocol.
The 3rd serial port is congured at 19200 bauds, 2 wires to be used with the PowerOne protocol.
When editing this le using Excel, the following display is shown using the CSV format:
type br data_b parity stop_bits wires protocol interframe
SERIAL1 9600 8 N 1 2 Modbus 0 ms
SERIAL2 1200 8 N 1 4 SMANET 0 ms
SERIAL3 19200 8 N 1 2 PW1 0
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