User's Manual

Rev 1.3 SignalFire Telemetry
4
Remote Modbus Stick Node Re-Scan
It is possible to cause a remote Modbus Stick to re-scan for attached Modbus devices by writing to
one of the gateway’s configuration registers. This is useful to discover a Modbus device that is added
to an existing Modbus node. The scan may be initiated by one of the two methods. First, if the radio
address of the Modbus Stick is known, writing this address to gateway register 3000 will result in a
scan. Second, if the Modbus ID of one of the already registered devices attached to a Modbus Stick is
known, a scan will be started by writing the ID to gateway register 3002.