0X08) Diagnostics - Hitachi HX-RIO3 Series User Manual

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9.2.1. 8(0x08) Diagnostics

Sub-function 0x0000(0) Return Query Data
The data passed in the request data field is to be returned (looped back) in the response.
The entire response message should be identical to the request.
Sub-function Data Field (Request)
0x0000(0) Any
Sub-function 0x0001(1) Restart Communications Option
The remote device could be initialized and restarted, and all of its communications event counters are cleared.
Especially, data field 0x55AA make the remote device to restart with factory default setup of EEPROM.
Sub-function Data Field (Request)
0x0001(1) 0x0000, 0xFF00
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)
0x000A(10) 0x0000
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)
0x000B(11) 0x0000
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)
0x000D(13) 0x0000
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)
0x000E(14) 0x0000
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.
Data Field (Response)
Echo Request Data
Data Field (Response)
Echo Request Data
Data Field (Response)
Echo Request Data
Data Field (Response)
Total Message Count
Data Field (Response)
Exception Error Count
Data Field (Response)
Slave Message Count
HX-RIO3 Series
Description
Description
Reset Only
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Description
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