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Modbus Addressing Tool
This tool allows to address Barionet extension devices connected to the Barionet. Each extension unit needs an unique Modbus address, only the Modbus address range from 255 down to 249 is supported by this application.
The default Modbus address of the Barionet extension units is 255, if not changed.
Before the Barionet can communicate with extension units, the Barionet serial settings must be set in the Barionet SERIAL setup (for RS485) to the same values of the extension unit (default:19200,8,enable-even,1)!
Note: On this addressing tool all fields must be filled, not required fields have to be filled with 0 (default), e.g. when only a new Modbus address should be assigned then define correct values in under "Serial Number" and "R274" and make sure all other fields are filled with 0 and then click on "Set".
Serial Number
Enter the serial number found on the device label in the format xxx-xxx (on the backside of the extension unit, below the barcode).
R272
R6: Startup defaults for relays. Bit 0 to 5 may be set to control which relays are activated by default at system startup. Define 0 if you will not change the default!
X8: Input pull-up resistor settings. Bit 0 - 7 may be set to activate input pull-ups. Define 255 if you will not change the default !
R273
R6/X8/IO12: Serial interface mode. Bit 0 selects 9600 (1) or 19200 (0), and Bit 7 selects no (1) or even (0) parity. Other bits are not used. Define 0 if you will not change the default !
R274
R6/X8/IO12: Device address on the Modbus/RTU network. Assign a Modbus address in the range from 249 to 255.
R275
IO12/R6: Reserved for future use. Define 0 if you will not change the default!
X8 I/O type selection. Bit 0 to 7 may be set to select input or output operation per I/O point (1=output, 0=input).
Note:
All fields must be filled, otherwise the setup change wont work!
These register numbers are used in the Modbus/RTU protocol, as refered to under "Command 69" in the manual, and all are numbered xxx-1 relative to the register numbers in the complete register map in the device manual.
After changing the setting of any extension reload the page (click "Reload page" button) and check below in addressing table.
Addressing table
The addressing table lists the discovered extension devices on the Barionet. It displays the device type, the firmware version of the discovered extension devices, and the range of Barionet registers for the IOs of each extension device assigned from this application.
To refresh the view (e.g. after Modbus address change) reload this web page. If multiple extension devices have the same Modbus address, then only one (the first answering) will be displayed. In this case change to an unique modbus address of these devices.
Device types:
B1 = R6
B2 = X8
B3 = IO12