Connecting The Fronius Modbus Card To The Modbus System - Fronius Modbus Card Bedienungsanleitung

The following jumper settings are possible on the Fronius Modbus Card:
Connecting the
Fronius Modbus
Card to the Mod-
bus system
To set up a connection between the Fronius Modbus Card and a Modbus system, the fol-
lowing materials are required:
-
-
2-wire connection
with bus termination
2-wire connection
without bus termination
(factory setting)
NOTE! Laying the data lines used on the Master at a defined level is recommend-
ed as follows:
- D1 via a resistance at 5 V
- D0 via a resistance to ground
Possible resistance values according to Modbus specification: 450 to 650 Ohm
2-pin or 4-pin cable with cable cross section of 0.2 - 1.5 mm²
(not supplied with the Fronius Modbus Card)
6-pin plug for connection to the Modbus system
(1) (2) (3) (4) (5)
(6)
4-wire connection
with bus termination
4-wire connection
without bus termination
Connect to the Modbus system by set-
1
ting up connections (2) - (5) for the
Modbus plug (1) based on "Assign-
ment of connections for connection to
the Modbus system" below
– The lines (6) - (7) lead to the other
bus participants
– If the Fronius Modbus Card is the
last bus participant, one of the two
lines (6) - (7) is no longer used,
and the jumper must be set for the
bus termination.
– Tightening torque to be used for
(7)
plugs with screw terminals:
0.25 Nm
Insert the 6-pin plug into the Fronius
2
Modbus Card
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