36
User Manual
MN032006EN
Effective December 2017
415U Condor-long-range
wireless I/O and gateway
EATON
www.eaton.com
Serial expansion I/O
To change serial port parameters for expansion I/O, click the
serial port (
RS-485
or
RS-232
) in the project tree, and then click
Expansion I/O
in the
Operating Mode
drop down menu
(see
Figure 57
).
By default the RS-485 port is automatically enabled for expansion
I/O. This is to allow you to connect serial expansion I/O modules
with minimal or no module configuration. When you add an ELPRO
Expansion I/O module (such as an 115S-11, 115S-12, or 115S-13)
to the RS-485 port of the 415U-2, the I/O is automatically available
from within the I/O store of the 415U-2. See
page 75
for location
addresses, or refer to the 115S Expansion I/O User Manual.
The default data rate and data format are standard 9600, N81 with
no flow control, which matches the default serial baud rate and data
format of the 115S serial expansion module. You can adjust serial
parameters for compatibility or faster serial performance. If you
change the baud rate or data format, the serial port parameters
on the expansion I/O module also need to be changed. To do this
use the Modbus Serial I/O Module option from the MConfig
Utilities menu.
Figure 57. Expansion I/O
Maximum No.
Expansion Modules
to Poll
Maximum number of slave addresses that the 415U-2 will scan or poll. Default is 3. If adding more than 3 x 115S
expansion I/O module or the address used are greater than 3, this number will need to be increased to match the
largest address.
Advanced
Selecting the Advanced check-box displays the Request Pause, Response Wait, and Maximum Time fields. If a 115S
module is directly connected to the 415U-2, it will operate correctly using the default settings. You may need to
change the default settings if the 115S is located remotely from the host module.
Request Pause
Delay between serial requests, in milliseconds
Response Wait
Serial response timeout, in milliseconds. A serial retry is sent if a response is not received within this
timeout period.
Maximum Tries
Maximum number of request retries performed on the serial port. This should be set to 1 (no re-tries) for directly
connected expansion I/O.
Serial Modbus RTU slave
When a serial port is configured as a Modbus RTU slave, the only
parameters that need to be configured are data rate, data format,
and flow control. To configure these parameters, click the serial
port (
RS-485
or
RS-232
) in the module project tree, and then click
Modbus RTU Slave
in the
Operating Mode
drop down menu. The
Modbus slave device ID is configured by clicking Modbus in the
project tree (see the next section).
