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9.13
MODBUS Slave
Addressing and con
fi
guration of the MODBUS Slave interface.
Via this interface the device can be networked with a master building control system, the device then
operates as a pure Slave and uses the MODBUS-RTU protocol.
The connection is made to the terminals
“
2A (2D+)
”
,
“
2B (2D-)
”
of the MODBUS Slave interface (
installation / RS-485 interfaces for MODBUS RTU).
Information
•
In the IO Setup the
“
COM function must be set
”
to
“
MODBUS Slave
”
so that this menu group is
displayed (factory setting).
•
MODBUS settings (baud rate, parity) are saved after a reset (
menu group
“
Start
”
->
“
Reset
”
or
interrupt voltage supply).
MODBUS Slave
Bus Address
The device address is factory set to the highest available MODBUS address: 247.
Setting range MODBUS Address: 1 - 247.
247
Bus Address
MODBUS Slave
Addressing
Switch addressing to
“
ON
”
before setting
“
address
”
.
OFF
Addressing
MODBUS Slave
UART Baudrate
Setting transfer rate
Valid values: 4800, 9600, 19200, 38400, 115200
Factory setting: 19200
19200
UART Baudrate
MODBUS Slave
UART Mode
Setting transfer format
Valid values: 8O1, 8N1, 8E1
Factory setting: 8E1
8E1
UART Mode
Operating Instructions
UNIcon MODBUS Master
Programming
L-BAL-E207-GB 1723 Index 003
Part.-No.
89/114