Create heartbeat connection

The device serial port and the OBLOQ serial port may lose contact after a long time without data communication. By this command, the device and OBLOQ can maintain a certain frequency of data exchange.

Request:

"|1|3|2000|\r"

or

"|1|3|-2|\r"

Parameters:

2000 Set heartbeat data transmission frequency, unit: milliseconds, 2000 means by every 2 seconds OBLOQ will send data to the communication device.

-2 Negative number indicates that OBLOQ stops sending data.

Returns:

"|1|3|\r"

Arduino Sample:

softSerial.print("|1|3|2000|\r");