
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 93 www.weidmuller.com Rev 2.136
4.9 - Internal Diagnostic Modbus Registers
There are a number of internal diagnostic registers that can be accessed via Modbus TCP/RTU that will help with
analysing and diagnosing the radio network. To access these register the Modbus Server will need to be enabled and a
Modbus Server address will need to be configured (See 3.14 - “Modbus I/O Transfer” for details on how this is done).
After enabling the Modbus Client you can then access the following information by reading the corresponding Modbus
Address at the Server ID address.
Note: ‘wi0’ is the normal default interface. If more interfaces are added by entering in virtual WDS
connections (either Client or AP) in section 3.16 - Repeaters (WDS) then they will take on the next
available interface number i.e. wi1, wi2, etc
Connection Information
Total number Associated Stations
Current Radio Channel. See section 3.1 - “Selecting a Channel” for
channel details
Number Wireless Interfaces configured, includes Virtual Interfaces –
wi1-wi10
Wireless Adaptor (wi0) - Link Status
Wireless Adaptor (wi0) - Link Status Inverted
Wireless Adaptor (wi0) - Number Associated Stations for this interface
Wireless Adaptor (wi0) - Points to the starting register of the AP's
Station List. First interface (wi0) will always start at 5200 and
dynamically enter data depending on the number of STA’s. Remaining
interfaces (wi1-wi10) will be entered after wi0 data. Register 5023,
5033, etc will indicate starting location for each interface.
Wireless Adaptor (wi0) – RSSI & BGND of Rx message from AP e.g.
Hex 5F5D = 5D for RSSI and 5F for BGND (Convert value from hex to
dec and add a “-“ e.g. 5F = -95dB)
Wireless Adaptor (wi0) - Transmit Data Rate from the Access Point
Wireless Adaptor (wi0) - MAC Address of the Access Point
As per registers 5010-5016 but for the next Wireless Adaptor (wi1)
As per registers 5010-5016 but for the next Wireless Adaptor (wi2)
As per registers 5010-5016 but for the next Wireless Adaptor (wi3)
As per registers 5010-5016 but for the next Wireless Adaptor (wi10)
Transmit Data Rate to Client (STA)
MAC address of Client (STA)
Dynamic list of STA's Refer to register 5023, 5033, etc for starting
register of each wi interface
Reset module (enter FFFF to reset module)
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