In the context of Modbus communication, what considerations should be made when configuring the data format (e.g., 8E1) for serial communication with devices?

When configuring the data format for Modbus communication, it is essential to ensure that the settings match the requirements of the devices being communicated with. The data format typically includes parameters such as the number of data bits (8), parity (E for even, N for none, O for odd), and stop bits (1). It is crucial to configure these settings correctly to establish a successful communication link with Modbus devices.

// Example configuration for serial communication with Modbus devices
$serial = new PhpSerial;

$serial->deviceSet("/dev/ttyUSB0");
$serial->confBaudRate(9600);
$serial->confParity("E");
$serial->confCharacterLength(8);
$serial->confStopBits(1);

$serial->deviceOpen();