5.9.1
Addressing member MODBUS Master Interface
Up to
32
members can be connected at the MODBUS Master interface.
No other components are required for the patented automatic addressing (activation
menu group
MODBUS Master: AutoAddressing). Only the connections
“
ID1
”
and
“
ID2
”
of the Slave members are
connected additionally next to the bus connection and at the
“
ID
”
connection of the MODBUS Master
for this.
The
“
ID
”
connection of the MODBUS Master must be connected to the
“
ID1
”
or
“
ID2
”
connection of the
fi
rst Slave member
. This is recognised as a result and occupied by address
1
.
For the following users the connection
“
ID1
”
or
“
ID2
”
of a Slave user respectively is connected with
connection
“
ID1
”
or
“
ID2
”
of the next Slave user.
The automatic addressing of other users is initiated by the previous user via this connection.
The individual members can be addressed in advance without this device by an external terminal or a
PC.
Alternatively, the addressing can be done manually by a separate hand held terminal or PC software,
the appropriate number of members must then be entered on the MODBUS Master (
menu group
MODBUS Master: BUS Slavecount).
Information
•
If a repeater is necessary and automatic addressing should be carried out, only the repeater of the
Z-G-1NE type can be used, only it can relay the addressing signal.
•
Depending
“
on
”
the
“
version,
”
the connections for MODBUS A (D+), B (D-) are available single or
double at the Slave members. These are connected with each other internally electrically.
•
The connections for the automatic addressing
“
ID1
”
and
“
ID2
”
are
not directly
connected with each
other internally. These may not be bridged; any order of connection is possible.
•
When using the connection box the cable shield of the CAT5 cable is internally connected to
“
PE
”
by
an RC element.
•
The communication parameters are
fi
xed
Programming: Menu group MODBUS Master.
Operating Instructions
UNIcon MODBUS Master
Electrical installation
L-BAL-E207-GB 1723 Index 003
Part.-No.
13/114