123
Reference Manual
00809-0100-2460, Rev DE
Service and Troubleshooting
October 2018
Service and Troubleshooting
6.10 Modbus TCP configuration
The Modbus TCP implementation is limited by license. License options are available depending on the
required number of Modbus TCP clients. The Modbus TCP license options are:
Disabled
Single client
Five clients
If Modbus TCP is enabled by license the network configuration has to be set according to user
requirements.
Figure 6-4. Modbus TCP Configuration
Table 6-3. Modbus TCP configuration
Menu Description
Extra Modbus TCP port/Port
number
If needed, an extra Modbus TCP port may be specified in the range 50000 to 65535.
502 is the default port.
Max. response time
Maximum response time. No response within this time interval is regarded as communication failure.
Max. response time, FC17
Maximum response time for FC17 (device identification).
Idle time
Time until TCP keep alive starts in case there is no active communication between the Rosemount
2460 and the host. TCP keep alive sends transmissions to verify that the idle connection is still active.
Interval time
Interval for TCP keep alive messages.
Count
Number of lost TCP keep alive messages before it is considered that there is no connection to the host.
Client whitelisting
Restricts replies via Modbus TCP IP (Eth 1) to system hub for selected IP addresses
(1)
.
1. A minimum of one IP address must be specified, otherwise the system hub will not send any replies.
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