Fnio s-series – Beijer Electronics NA-9379 User Manual
Page 67
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MODBUS Programmable I/O NA-9379
FnIO S-Series
Copyright(C) CREVIS Co.,Ltd Support +82-31-899-4599 URL : www.crevis.co.kr
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)
Data Field (Response)
Description
0x0000(0)
Any
Echo Request Data
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 makes the remote device to restart with factory default setup of EEPROM.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x0001(1)
0x0000, 0xFF00
Echo Request Data
Reset
0x0001(1)
0x55AA
Echo Request Data
Reset with Factory Default*
*All expansion slot configuration parameters are cleared.
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 6.2.11.
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