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Technical description
6 Communication
6.1 Communication ports
VM50.EN004
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171
6.1.3.
Extension port
Parameters
Parameter Value
Unit Description
Note
Protocol
None
SPA-bus
ProfibusDP
ModbusSla
ModbusTCPs
IEC-103
ExternalIO
DNP3
Protocol selection for
extension port
-
SPA-bus (slave)
Profibus DB (slave)
Modbus RTU slave
Modbus TCP slave
IEC-60870-5-103 (slave)
Modbus RTU master for
external I/O-modules
DNP 3.0
Set
Msg#
0 ... 2
32
1
Message counter since the
device has restarted or
since last clearing
Clr
Errors
0 ... 2
16
1
Protocol errors since the
device has restarted or
since last clearing
Clr
Tout
0 ... 2
16
1
Timeout errors since the
device has restarted or
since last clearing
Clr
speed/DPS
Display of current
communication
parameters.
speed = bit/s
D = number of data bits
P = parity: none, even,
odd
S = number of stop bits
1)
Set = An editable parameter (password needed)
Clr = Clearing to zero is possible
1) The communication parameters are set in the protocol specific menus. For
the local port command line interface the parameters are set in
configuration menu.