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Cooper Bussmann 915U-2 Wireless Mesh I/O and Gateway User Manual
Rev Version 1.2.2
Connection Timeout
TCP connection timeout period, in seconds. If no Modbus/TCP data is received within
this timeout period, the TCP connection will be dropped. Set this field to zero for no
timeout.
Maximum Tries
Maximum number of request retries that are performed on the serial port.
Maximum Number
of Connections
Maximum number of simultaneous TCP connections that can be made to the TCP
server.
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 56).
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 915U-2, the I/O is automatically available
from within the I/O store of the 915U-2. See Appendix E 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. Serial parameters can be adjusted 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 115S Configuration Utility, which can be
downloaded from the Cooper Bussmann Website at www.cooperbussmann.com/wirelessresources.
Figure 56 Expansion I/O
Maximum No.
Expansion Modules
to Poll
Maximum number of slave addresses that the 915U-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.
Maximum Number
of Connections
Maximum number of simultaneous TCP connections to the server allowed.
Request Pause
Delay between serial requests, in milliseconds
