5. CONFIGURATION
Maximum Simultaneous Requests: it is used with a high scan cycle. This parameter is fixed in 1 (not editable) when the
configured protocol is MODBUS RTU over TCP.
Communication Time-out: the Communication time-out is the time that the client will wait for a server response to the
request. For a MODBUS Client device, two variables of the system must be considered: the time the server takes to process
a request and the response sending delay in case it is set in the server. It is recommended that the time-out is equal or higher
than twice the sum of these parameters. For further information, check Communication Performance section.
Mode: defines when the connection with the server is finished by the client. Below follows the available options:
Connection is closed after a time-out or Connection is never closed in normal situations: Those options presents the same
behavior of Client, close the connection due non response of a request by the Server before reaching the Communication
Time-out.
Connection is closed at the end of each communication: The connection is closed by the Client after finish each request.
Connection is closed after an Inactive Time: The connection will be closed by the Client if it reach the Inactive Time
without performing a request to the Server.
Inactive Time: inactivity connection time.
5.5.8.1.3. Mappings Configuration – Configuration via Symbolic Mapping
The MODBUS relations configuration, showed on figure below, follows the parameters described on table below:
Figure 73: MODBUS Data Type
Configuration Description Default Options
Value Variable Symbolic variable name -
Name of a variable declared
in a program or GVL
133
To Next Page
Loading...
Need help?
General
