Lika EM58 MB, User Manual

Page: 35 / 92

ES58 • EM58 MODBUS®
If the connection succeeds, the
Device connected
message as well as the model
of the connected device are displayed in the group box between the
DEVICE
and
the
FUNCTIONS
group boxes. Actually the software is able to recognize
automatically the model of the connected device and changes the lay-out of
the software tool's pages consequently.
The values of the registers that are currently set in the device are shown in the
INPUT REGISTERS
and
HOLDING REGISTERS
group boxes.
Furthermore the
Read Params
and
Write Holding
buttons appears in the
DEVICE
group box.
Read Params
When you press the
Read Params
button you send a single command to read
the Input Registers and the Holding Registers. The Input Registers and the
Holding Registers listed in the page are updated according to the values of the
device in the moment when the request is transmitted (instantaneous reading).
To read the registers uninterruptedly you must press the
Continuous reading
button, see on page 37.
Write Holding
When you press the
Write Holding
button you send a command to write all
Holding Registers at the same time. It is also possible to press the
ENTER
key in
the keyboard of your personal computer: it sends a command to write the only
MAN ESx58x_EMx58x MB E 1.3 Quick reference 35 of 92