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10.9 Register 0x113C and 0x113D: Restore Modbus-Connection-Parameters
Registers 0x113C and 0x113D serve for resetting the parameter-register 0x1120 and 0x1130 to
0x113B to the default settings.
For this purpose, write 0x6C6F to register 0x113C. To activate the reset of the registers, write 0x6164
("load") within 30 seconds in register 0x113D.
Both registers can also be written with one single request using the function codes FC16 and FC23.
The service resets the parameters without saving them. This can be achieved by using a following
"save" service.
10.10 Register 0x113E and 0x113F: Save Modbus-Connection-Parameters
Registers 0x113E and 0x113F are used for the non-volatile saving of parameters in registers 0x1120
and 0x1130 to 0x113B.
For this purpose, write 0x7361 to register 0×113E. To activate the saving of the registers, write
0x7665 ("save") within 30 seconds in register 0x113F.
Both registers can also be written with one single request using the function codes FC16 and FC23.
10.11 Bit Areas: Mapping of Input Discrete- and Coil-Areas
As described before, the digital in and outputs can be read and, in case of outputs, be written in the
data area for the packed in- and output data.
In order to set for example a single output (single coil), the following functions are available for read-
ing and writing single bits:
FC1 ("Read Coils"),
FC2 ("Read Discrete Inputs"),
FC 5 ("Write Single Coil")
FC15 ("Write Multiple Coils")
Data mapping of input discrete and coil areas:
Mapping: input discrete area
Contains all digital inputs starting with offset "0".
Mapping: coil area
Contains all digital outputs starting with offset "0".
NOTE
In the packed process data, the digital I/O data are stored following the variable in- and
output data area of the intelligent I/Os, which means they are stored with a variable offset,
depending on the station’s I/O-configuration.
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