Siemens DTU3005-B - Manual (Page 33)

5
Creating Project Files—Modbus Master to Devices
Siemens Energy & Automation, Inc. 29
5.2 Configuring the Project File
Once you have created or opened the project file,
select Edit from the main menu. When the Device Pro-
tocol for port 2 is set to SEAbus (see Section 5.4), the
following menu items appear:
• Port 1 (Modbus Master) —allows you to select the
protocol (RTU or ASCII) and configure the com-
munications settings for the Modbus Master
device connected to port 1.
• Port 2 (Devices) —allows you to configure commu-
nications settings for SEAbus devices or Siemens
Protective relays connected to port 2.
• Port 3 (Modbus/Passthrough) —allows you to
select whether port 3 is used as a passthrough to
the devices on port 2, or used for connection to a
second Modbus Master device.
• Diagnostics —allows you to indicate if you want
the DTU3005 to write communications diagnostic
information to the Modbus Master.
• Device Command Registers —allows you to indi-
cate which PLC registers will be used for device
commands.
• Device Defaults —allows you to set the default
data registers for more than one device of a cer-
tain type, e.g., set the defaults for all 4720 power
meters or all S7-I/O units. The data registers can
still be customized for each device, as required.
See Section 5.7.2 for more information.
• Device List —allows you to indicate which SEAbus
devices or Siemens protective relays are con-
nected to port 2 and which PLC registers they are
communicating with.
Note: If the Device Protocol for port 2 is set to
VDEW (see Section 5.4), then two addi-
tional menu items are available: Global
Command Registers
and Device Text to
Values Table . See Section 5.8 and Section
for instructions on using these menu items.
In addition, the port 3 menu item is
changed to Port 3 (Modbus Master)
because the passthrough feature is not sup-
ported with VDEW devices. The instructions
in Section 5.3 are applicable to port 1 and to
port 3 for VDEW devices.