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MODBUS communication
11.8 Reading parameters by means of MODBUS
3KC ATC6300 transfer control device
170
Manual, 03/2018, L1V30535632002A-01
11.8
Reading parameters by means of MODBUS
It is possible to read parameters of the ATC6300 via MODBUS.
For an understanding of the numeric designation of the parameters and the corresponding
functions, please refer to chapter Parameterization (Page 115).
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
Numbers of registers
Text length 6 characters (e.g. P14.0x.06)
3 registers (6 byte)
Text length 16 characters (e.g. P14.0x.05)
8 registers (16 byte)
Text length 20 characters (e.g. P15.0x.03)
10 registers (20 byte)
Abs (numerical value) < 32768 (e.g. P12.05)
1 register (2 byte)
Abs (numerical value) < 32768 (e.g. P12.01)
2 registers (4 byte)
IP address (e.g. P08.0x.06)
2 registers (4 byte)
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.
11.9
Changing parameters by means of MODBUS
1.
Write the value of the menu to be changed to the address 5000h using function 06.
2.
Write the value of the submenu to be changed (where present), using function 06, to the
address 5001h.
3.
Using function 6, write the value of the parameters to be changed to the address 5002h.
4.
Perform function 16 at the address 5004h, with the number of the register corresponding
to the length of the parameter (see table).
5.
In order to change another parameter in the same menu / submenu repeat step 4, or if
you wish to read a new parameter, repeat step 1.
6.
In order to carry out changes to the parameters successfully, it is necessary to save
these in the EEPROM of the device.
For this purpose, execute the command in accordance with chapter Commands (use with
MODBUS function 06) (Page 164). (Using function 6, write the value 5 to the address
2F03).
Содержание SENTRON ATC6300
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