Creating project files—modbus master to devices – Siemens DTU3005-B User Manual

Page 43

Creating Project Files—Modbus Master to Devices

Siemens Energy & Automation, Inc.

Select the data word (16 bit data) from the list and
press Enter. Continue to set the other data words
in the same manner. Many data items consist of
two words (32 bit data). It is important that you
configure both words in order to transmit useful
information to the DTU3005’s registers.

Use these options as follows:

Select Set Defaults to copy the default cus-
tom device registers to the list. See
Section 5.7.2

for instructions on setting cus-

tom device registers by device type.

Select Clear All to delete all register names from
the list.

Select Set as Defaults to save the current cus-
tom register list as the default custom register list.
This will not change the custom registers of other
devices of the same type. See Section 5.7.1 for
instructions on setting custom device registers for
a single device.

Select Save to save your custom register list and
then Ok to exit this dialog box. Select Cancel to
exit this dialog box without making changes.

To conserve registers when using VDEW devices, you
should set all unused registers to “Not Used” and
place them at the end of the list. The DTU3005 will
only allocate registers for those containing device
data. (This does not apply to SEAbus devices, for
which the DTU3005 allocates 16 registers regardless if
they are used or not.)

5.7.2

Configuring Default Custom Device
Registers

If you are configuring custom device registers for
more than one device of a certain type, you may con-
figure the default custom registers from the Edit menu
Device Defaults

command. After configuring the

default device registers, you may use them for any or
all devices, or further customize individual registers
for any of your devices. SEAbus devices can have 16
custom registers. VDEW devices may have between 1
and 64 custom registers.

To configure default custom registers for a particular
device type:

Select Device Defaults from the Edit menu. A list
of devices appears. If you have configured port 2
for SEAbus devices, only SEAbus devices will

Select the device you wish to configure. The
default custom register configuration menu
appears. The first time you select this command,
the first 16 registers (64 for VDEW devices) from
the device’s standard data register list appear on
the default real-time data list. Not all of the entries
are visible on the menu. Use the scroll bar or the
Page Up

and Page Down keys to view all the

entries.