User manual
92 www.cooperbussmann.com/wirelessresources
Cooper Bussmann 245U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 2.19
4.9 Internal Diagnostics Modbus Registers
There are a number of internal diagnostic registers that can be accessed via Modbus TCP/RTU that will help with
analyzing and diagnosing the radio network. To access these registers, the Modbus server needs to be enabled
and a Modbus server address needs to be configured. For details, see “3.15 Modbus I/O Transfer.” After enabling
the Modbus client, you can access the following information by reading the corresponding Modbus address at the
server ID address.
NOTE The normal default interface is “wi0.” If additional interfaces are added by entering virtual WDS
connections (either client or access point) as described in “3.17 Repeaters (WDS),” they will take on the
next available interface number (wi1, wi2, and so on).
Connection Information
Register Module Description
5000 Both Total number of associated stations.
5001 Both Current radio channel. See “3.9 Radio Configuration” for channel details.
5002 Both Number of wireless interfaces configured, including virtual interfaces wi1–wi10.
5010 Both Wireless adapter (wi0) – link status.
5011 Both Wireless adapter (wi0) – link status inverted.
5012 Both Wireless adapter (wi0) – number of associated stations for this interface.
5013 AP Only Wireless adapter (wi0) – points to the starting register of the access point’s station list.
First interface (wi0) will always start at 5200 and dynamically enter data depending on
the number of STAs. The remaining interfaces (wi1-wi10) will be entered after wi0 data.
Register 5023, 5033 (and so on) will indicate the starting location for each interface.
5014 STA Only Wireless adapter (wi0) – RSSI and BGND of RX message from the access point, for
example, hexadecimal 5F5D = 5D for RSSI, and 5F for BGND. (Convert the value from
hexadecimal to decimal and add a “-”. For example, 5F = -95dB.)
5015 STA Only Wireless adapter (wi0) – Transmit data rate from the access point.
5016 STA Only Wireless adapter (wi0) – MAC address of the access point.
5020-5026 As per 5010-5016 As per registers 5010–5016, but for the next wireless adapter (wi1).
5030-5036 As per 5010-5016 As per registers 5010–5016, but for the next wireless adapter (wi2).
5040-5046 As per 5010-5016 As per registers 5010–5016, but for the next wireless adapter (wi3).
....etc As per 5010-5016 As per registers 5010–5016, but for the next wireless adapter (wi10).
5200 AP Only RSSI of the client (STA).
5201 AP Only Transmit data rate to client (STA).
5202 AP Only MAC address of client (STA).
....etc AP Only Dynamic list of STAs. Refer to register 5023, 5033 (and so on) for the starting register of
each wiinterface.
9999 Both Reset the module (enter FFFF to reset module).
Statistic Registers
Register Module Description
4500 Both Total data packets received on the interface.
4502 Both Received frames with antenna 1 (TX/RX).
4504 Both Received frames with antenna 2 (RX).
4506 Both Receiver / default antenna switches.
4508 Both Receive message failed due to bad CRC.
4510 Both Receive message failed due to decryption.
4512 Both Receive message failed due to MIC failure.
4514 Both Receive message failed due to FIFO overrun.
4516 Both Beacon missed interrupts.