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Event Management - MODBUS
MODBUS
In this part of the switch configuration menu, the properties of the
Modbus TCP and RTU protocols are configured.
Buses –
Serial line configuration, modes
None, Slave RTU
or
Master RTU
.
Slave settings –
Device configuration as Slave RTU or TCP.
Master settings
–
Configuration of the device as a
Master
and its
parameters.
Slave Configuration
In the event, the switch behaves as a device in Modbus Slave RTU or TCP.
Master Configuration
This section describes the configuration where the switch behaves as a
Modbus Master RTU or TCP device. The configuration of this menu is
closely linked to Events (Event management), where automatic actions
are combined with Modbus registers.
Slaves (Modbus Slave Device Specifications)
The Modbus Master switch supports connection to eight Modbus Slave devices. The Modbus Slave
setting allows the Slave devices to be used together in both RTU and TCP mode. Each line represents one
connection to the Modbus Slave device and creates a link for the connection in the
Slots
menu.
Modbus Slave in RTU or TCP Mode
Setting whether it is a Modbus device connected to RS485 or via TCP.
Register R
emap (Modbus Register Specification)
Register remap
specifies the specific registers to be used and creates a link for the
Slots
menu. Each
switch supports the configuration of 64 different registers and their combinations
Register
1….64
-
The registry label is stored only in the SIMULand.v4 project
Type
- Register type and its specifications
Count
- The number of registers to be read starts at the Register address. All other expected responses
cannot exceed the allowed length: 256 bytes.
Reverse word order
– A proprietary feature where 32-bit messages are read after 16-bit registers in the
reverse order of the Modbus protocol.
Slots (Menu mapping Slaves - Registers)
The
Slots
menu combines the configuration from the
Slaves
(Modbus Slave Device Specification) and
Register remap
(Modbus Register Specification) menus. The combination of these two menus provides
the switch with all the necessary information for reading and writing Modbus registers in devices
connected to the serial interface or via TCP.
Slot
1….64
– Name, description of the connection of tables from the menu
Slaves
and
Register remap
. It
is stored only in the SIMUland.v4 project, not in the device.
Enable
– Allows the use of a given line, connection.
Slave index
– Number, line index from the
Slaves
menu.
Register remap
- Number, line index from the
Register remap
menu.
REGISTRY NAME
TYPE
READ-WRITE FUNCTION
EXAMPLE OF USE
Coil
1-bit
Read-Write
Relay output
Discrete
1-bit
Read-Only
Digital input
Input
16-bit
Read-Only
Analog input
Holding
16-bit
Read-Write
Analog output
