5. CONFIGURATION
TCP Port: if there are multiple instances of the protocol added in a single Ethernet interface, different TCP ports must be
selected for each instance. Some TCP ports, among the possibilities mentioned above, are reserved and therefore cannot be
used. See table Reserved TCP/UDP ports.
Mapping Disabling: composed of 32 bits, it is used to disable, individually, the 32 MODBUS relations configured in
Device Mappings space. The relation is disabled when the corresponding bit is equal to 1, otherwise, the mapping is enabled.
This field is limited by the size of output variables addressable memory (%Q) at CPU, which can be found in section Memory.
Default Value: factory default cannot be set for the Mapping Disabling field, since the creation of a protocol instance can
be made at any moment within the application development. The MasterTool IEC XE software itself allocate a value from the
range of direct representation output variables (%Q), still unused.
Communication Time-out: the settings present on the button Advanced... on the TCP connection, are described in the
notes of the section Device Configuration – Configuration via Symbolic Mapping.
5.5.8.2.3. Mapping Configuration – Configuration via Direct Representation (%Q)
The MODBUS relations settings, viewed in the figures below, follow the parameters described in table below:
Figure 77: MODBUS Data Type
Figure 78: MODBUS Function
In table below, the number of factory default settings and the values for the column Options, may vary according to the
data type and MODBUS function (FC).
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