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Cooper Bussmann 245U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 2.19
RS-232 / RS485 Modbus TCP/RTU Converter
Modbus Server TCP
Port
Port number used for the Modbus TCP. Standard port is 502.
Pauses Between
Requests
Enter the delay between serial request retries, in milliseconds.
Response Timeout
Enter the serial response timeout, in milliseconds. A serial retry will be sent if a
response is not received within this timeout period.
Connection Timeout
Enter the TCP connection timeout 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 Request
Retries
Enter the maximum number of request retries performed serially.
Maximum
Connections
Enter the maximum number of simultaneous TCP connections to the server allowed.
3.13 Multicast Pipe Manager
Previously, it has been difficult to connect a single TCP device (such as a SCADA or DCS system) to multiple
remote multicast serial devices. Multicast pipe allows this type of connection. An example would be a SCADA
system that needs to communicate with multiple remote serial devices. A modem can be placed at each remote
location and connected serially to each device. A multicast pipe is configured to communicate with all devices
using a multicast address and port, for example, 224.0.1.1:5000. The SCADA then communicates with the remotes
using TCP via the IP address of the multicast manager and the port selected in the configuration, for example,
5001.
Figure 42 Multicast Pipe