Siemens SENTRON ATC6500, Руководство пользователя

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MODBUS communication
10.6 Reading parameters by means of MODBUS
3KC ATC6500 transfer control device
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Manual, 05/2019, L1V30538268002A-01
10.6 Reading parameters by means of MODBUS
It is possible to read the status of the ATC6500 parameters via MODBUS.
For an understanding of the numeric designation of the parameters and the corresponding
functions, please refer to chapter Parameterization (Page 155).
Procedure for reading the parameters
1.
Using function 06, write the value of the menu to be read to the address 5000h.
2. Write the value of the submenu to be read (where present), using function 06, to the
address 5001h.
3. Using function 6, write the value of the parameters to be read to the address 5002h.
4. Perform function 4 at the address 5004h, with the number of the register corresponding to
the length of the parameter (see table).
Type of parameter Number of registers
Text length 6 characters (e.g. P14.0x.06) 3 registers (6 bytes)
Text length 16 characters (e.g. P14.0x.05) 8 registers (16 bytes)
Text length 20 characters (e.g. P15.0x.03) 10 registers (20 bytes)
Abs (numerical value) < 32768 (e.g. P01.05) 1 register (2 bytes)
Abs (numerical value) < 32768 (e.g. P12.01) 2 registers (4 bytes)
IP address (e.g. P08.0x.06) 2 registers (4 bytes)
5. In order to read another parameter in the same menu / submenu repeat step 4, or if you
wish to read a new parameter, repeat step 1.