ALTUS Nexto NX3004 User Manual

4. Configuration
88
Devices Configuration – Configuration for Direct Representation (%Q)
The configuration of the slave devices, viewed in Figure 4-19, comprises the following parameters:
Figure 4-19. Device Configuration
Configuration
Description
Default Value
Option
Name
Name of the instance
MODBUS_Device
Identifier, according to
IEC 61131-3
Slave Address
The MODBUS slave
address
1
0 to 255
Communication
Time-out (ms)
Sets the time-out of the
application level
1000
10 to 65535
Maximum Number
of Retries
Sets the number of retries
before reporting a
communication error
2
0 to 9
Mapping Disabling
Initial address used to
disable MODBUS
relations
-
0 to 2147483644
Table 4-54. Device Configuration - MODBUS Master
Notes:
Instance Name: this field is the identifier of the device, which is checked according to IEC 61131-3,
i.e. does not allow spaces, special characters and start with numeral character. It’s limited in 24
characters.
Mapping Disabling: composed of 32 bits, used to disable, individually, the 32 MODBUS relations
configured in Device Mapping space. The relation is disabled when the bit, corresponding to relation,
is equal to 1, otherwise, the mapping is enabled. This field is limited by the size of outputs variables
(%Q) addressable memory of each CPU, which can be found in chapter Technical Description.
Default Value: the factory default value cannot be set to the Disabling Area of Mappings field,
because the creation of a Protocol instance may be held at any time on application development. The
MasterTool IEC XE software itself allocate a value, from the range of output variables of direct
representation (%Q), not used yet.
For further details on the slave address, time-out and maximum number of retries parameters see
notes in section Devices Configuration – Configuration for Direct Representation (%Q).

ALTUS Nexto NX3004 Specifications

General

Brand	ALTUS
Model	Nexto NX3004
Category	Processor
Language	English