Name
Description
Value range
Slave
addresses
behind this
route
A list of Modbus slave addresses behind this route entry. The
Filter
slave addresses? parameter must be set to “Yes” for these
addresses to be enabled.
A comma-
separated list of
addresses with
up to 20
addresses
Connection
idle timeout
(TCP)
This parameter defines the timeout in seconds before the device
automatically closes the TCP connection to a slave if there has not
been communication. This frees up the slave's communication
resources and is useful when multiple masters access the same
slave.
The recommended timeout is two times the polling interval of the
master. If the polling interval is very long (over an hour), the
recommended timeout is 200 seconds longer than the polling
interval.
0...32500
Enable TCP
keepalive
If set to “Yes”, connection testing with TCP keepalive packets
between the master and slave devices is enabled for TCP network
communication.
The recommended setting is “Yes” if the polling interval or idle
timeout is very long.
No, Yes
9.4.3.1
Modbus route settings
The route entries define how Modbus packets are routed on network from the serial
master to network slaves. Up to 30 routes can be specified, and each route can have up
to 20 specified slaves. If the routing is based on Modbus addressing or there are more
than 20 slaves behind the route, the address filtering for that entry can be disabled by
setting
Filter
to “No”.
•
The Create new button opens the Route information view, in which it is possible
define settings for the new route.
•
The edit button allows changing the settings for an existing route.
•
The trashcan button allows removing an existing route.
Section 9
1MRS758460 B
Modbus application settings
40
ARG600 Dual SIM Variant
User Manual
