10
IE-SNC-T43(4)11-02
States of register Lo
0x??
----------------------------------------------------------------------------------------------
Exceptional response:
----------------------------------------------------------------------------------------------
FUNCTION Code of function
0x83
----------------------------------------------------------------------------------------------
DATA
Code of exception
0x??
----------------------------------------------------------------------------------------------
During sending of query to transducer initial register address and number of registers to read are
sent. Register addresses are indexed from zero – register 0x2001 se physically sent as value
0x2000, 0x2002 as 0x2001…)
04 (0x04): Reading 16-bit input gates (Read Input Registers)
This function is also possible to use for reading values from transducer, syntax is the same as with
function 03 (0x03): Reading of 16-bit registers. Addresses of available registers are specified
in chapter „
Modbus registers of the
transducer at page
14
.“
16 (0x10): Setting of several 16-bit registers (Write Multiple Registers)
Setting of transducer address and communication speed is possible to perform by writing to
transducer registers.
Attention! During write to transducer registers it is not enabled to write any number of registers.
Always below procedure should be strictly followed. If procedure is not followed, permanently loss
of important settings stored in transducer can occur! It is recommended to use procedure described
in chapter „
Setting of transducer, selection of communication protocol
“ for transducer setting
instead. Procedure enables also setting of all parameters of selected communication protocol.
Request:
-----------------------------------------------------------------------------------------------------
FUNCTION
Function
code
0x10
-----------------------------------------------------------------------------------------------------
DATA
Initial address Hi
0x??
Initial
address
Lo
0x??
-----------------------------------------------------------------------------
Number of registers Hi
0x??
Number of registers Lo
0x??
-----------------------------------------------------------------------------
Number
of
Bytes
0x??
(of sent data)
-----------------------------------------------------------------------------------------------------
Response:
-----------------------------------------------------------------------------------------------------
FUNCTION
Function
code
0x10
-----------------------------------------------------------------------------------------------------
DATA
Initial address Hi
0x??
Initial
address
Lo
0x??
-----------------------------------------------------------------------------
Number of registers Hi
0x??
Number of registers Lo
0x??
-----------------------------------------------------------------------------------------------------
Exceptional response: