GN-9289 User Manual
Page 40 of (70)
G-series GN-9289 Modbus TCP_UDP Rev. 1.01.docx
Sub-function 0x000A(10) Clear Counters and Diagnostic Register
The goal is to clear all counters and the diagnostic register. Counters are also cleared upon power–up.
Sub-
function
Data Field (Request)
Data Field (Response)
Description
0x000A(10)
0x0000
Echo Request Data
Sub-function 0x000B(11) Return Bus Message Count
The response data field returns the quantity of messages that the remote device has detected on the
communications system since its last restart, clear counters operation, or power–up.
Sub-
function
Data Field (Request)
Data Field (Response)
Description
0x000B(11)
0x0000
Total Message Count
Sub-function 0x000C(12) Return Bus Communication Error Count
The response data field returns the quantity of CRC errors encountered by the remote device since its last
restart, clear counters operation, or power–up.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x000C(12)
0x0000
CRC Error Count
Sub-function 0x000D(13) Return Bus Exception Error Count
The response data field returns the quantity of MODBUS exception responses returned by the remote device
since its last restart, clear counters operation, or power–up.
Exception responses are described and listed in section 3.2.11.
Sub-
function
Data Field (Request)
Data Field (Response)
Description
0x000D(13)
0x0000
Exception Error Count
Sub-function 0x000E(14) Return Slave Message Count
The response data field returns the quantity of messages addressed to the remote device, or broadcast, that
the remote device has processed since its last restart, clear counters operation, or power–up.
Sub-
function
Data Field (Request)
Data Field (Response)
Description
0x000E(14)
0x0000
Slave Message Count
Sub-function 0x000F(15) Return Slave No Response Count
The response data field returns the quantity of messages addressed to the remote device for which it has
returned no response (neither a normal response nor an exception response), since its last restart, clear
counters operation, or power–up.
Sub-
function
Data Field (Request)
Data Field (Response)
Description
0x000F(15)
0x0000
Slave No Response Count
