Rev 1.15
SignalFire Telemetry
7
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.
Setup
The DIN Gateway requires an initial configuration over RS-232 using the SignalFire Toolkit. Connect a
USB-Serial cable (can be purchased from SignalFire) between a computer and the Gateway’s DB9 port.
The following items must be configured to set up a SignalFire network:
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Radio Network
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Radio Network Group
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Corporate ID/Encryption Key
NOTE: If used with an Ethernet Gateway module the DB9 on the Ethernet module must be used for
ToolKit access.
