Camille Bauer LINAX A325 Operating Instructions Manual page 21

Advanced Graphic Data Manager
address, subnetmask or gateway from a DHCP server. Without DHCP, these settings have to be
made directly in the unit (depending on the network to which the unit should be connected).
• The IP address assigned by DHCP is required in the PC software supplied to be able to
communicate with the unit. It can be viewed under "Setup –> System –>
Communication –> Ethernet" or under "Diagnosis / Simulation –> Device information /
ENP".
• If the unit has been switched off for an extended period, it is given a new "leasing time"
IP address. Alternatively, the network administrator can also set up the system such that
the unit is always given the same IP address.
• A maximum of 5 Ethernet connections can be established to the unit at the same time
(e.g. 2 x PC software and 3x per Web server).
• If multiple PCs are to read out stored measured values (via different Ethernet connections
or other
communication interfaces such as a USB, for example), these PCs must receive different
read-out IDs (configure in the PC software supplied under "Unit –> Display/change unit
setup/add new unit –> Select unit –> Extras –> Unit readout").
Ethernet connection
An IEEE 802.3-compatible connection is available on a shielded RJ45 plug connector on the rear of
the unit as the network connection. This can be used to connect the unit with a hub or switch to
units in an office environment. For safe spacing distances, the office equipment standard EN 60950
must be observed. The assignment corresponds to a standards-compliant MDI port (AT&T258) such
that a shielded 1:1 cable with a maximum length of 100 meters (328 ft) can be used here. The
Ethernet port is designed as 10/100–BASE–T. Direct connection to a PC is possible with a crossover
cable. Half-duplex and full-duplex data transfer is supported. Alternatively, a GPRS modem can also
be connected to the Ethernet interface.
Fig. 10: RJ45 socket (AT&T256 assignment)
Meaning of the LEDs
Beneath the Ethernet connection (see rear of unit) there are two light emitting diodes which
indicate the status of the Ethernet interface.
• Yellow LED: link signal; is on when the unit is connected to a network. If this LED is not
illuminated then communication is impossible.
• Green LED: Tx/Rx; when the unit is receiving or sending data it flashes irregularly, otherwise is
continuously on.
4.3.6 PROFIBUS or Modbus option
• PROFIBUS–DP slave:
The unit can be integrated into a fieldbus system as per the PROFIBUS–DP standard by means of
the PROFIBUS-DP interface. Up to 40 analog inputs and 14 digital inputs can be transmitted via
PROFIBUS–DP and stored in the unit. For bidirectional communication in cyclic data transfer.
Baudrate: maximum 12 Mbit/s
• Modbus RTU slave:
Up to 40 analog inputs and 14 digital inputs can be transmitted via Modbus and stored in the unit.
Wiring
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