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EK280
Application Manual
180
i
Whilst both of these parameters are available in two instances, they both contain the same value.
The last described parameter overwrites the parameter in the other instance.
8.2.5 Connection parameters
The connection parameters which shall be set for the respective applications will be explained in the
examples below:
8.2.6 Modbus master via the terminal device (RS232 directly, RTU or ASCII format)
8.2.6.1 Connection
The connection of the RS232 interface is described in
and
8.2.6.2 Parametrization of the EK280
n) Parameterization of the functions of the RS232 interface is described in
a) Send the parameter file for Modbus parameterization
−
Send the following parameter file to the EK280 (
EK280_xvx. – RS-232 & Modbus-Master RTU (via connection 8 & ext. power supply) (*)
o) The following Modbus parameters are preset in the file stated above:
−
The first 24 tasks on the task list are processed.
−
A task list is parameterized which writes several Modbus addresses from the standard Modbus table
(
) to the client.
−
Telephone book entries are filled with dummy data.
−
Link 8 is set up for Modbus master communications via the terminal device
−
"Always" is proposed as the supply type (battery operation and external power supply)
−
Reference is made to instance 7 of Modbus master information
Display Designation
Address Value Content
MMDir
Modbus_Master_AdrDirection
7:7C0
0
0: H-Wort first
MMTrM Modbus_Master_TransMode
7:7C1
1
1: RTU
MMAdr
Modbus_Master_SlaveAddress
7:7C2
100 Modbus address of the remote object
MMAdM Modbus_Master_AddressModus
7:7C3
1
1: Phys. mode
MMALx Modbus_Master_TaskListIndex
7:7C4
1
From index 1 (start) of the task list
MMAAz Modbus_Master_TaskListNoTas
ks
7:7C5
24 24 tasks
48
The "x" stands for the version of software on the device, e.g. "2v2".
The star * stands for a small letter which indicates the version of the file, e.g. "a".