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5.2 Ethernet Configuration
It is possible to use PC software Observer II for data logging from multiple units of recorders connected
on standard Ethernet. Total number of devices that can be connected depends on the hardware interface
selected for the application. For example, 255 hardware devices can be connected on Ethernet. Maximum
1024 tags can be configured at Observer II for data logging, archiving and analysis. The tags cover AI,
Math, DI, DO, Counter & Totalizer.
1. Make sure that network adapter in PC is properly configured. IP address, Subnet mask and
Gateway should be configured at the PC for using Observer II program. Please contact System
administrator to set Unique IP address for the PC.
2. Install Observer II application software in PC. The software may be installed from setup available
in the CD supplied as per the order.
3. Ethernet configuration at Recorder
Please refer to 4.4 Instrument entering IP address, subnet mask and gateway address manually at
the recorder.
Gateway refers to a device on a network that sends local area traffic to other networks.
Subnet mask numbers help to define the relationship between host and rest of the network.
For every LAN, the Network administrator shall define Subnet mask and Gateway. Obtain subnet
mask and gateway address for the LAN at the place where the recorder to be connected. Enter
these details at the Recorder manually using front buttons.
By default, subnet mask address: 255.255.255.0
By default, Gate way: 0.0.0.0
Allocate the Unique IP address to the recorder and enter IP address at the recorder manually.
Contact System administrator for obtaining free IP address available at user LAN. Naming
duplicate IP address may disable the communication between the recorder and PC/LAN HUB.
4. Local area network uses UTP cable for Ethernet connectivity. Maximum UTP cable distance
between the recorder and LAN/HUB/PC should be less than 100 Meters. If the distance is more
than 100 Meters, additional LAN accessories/equipments may be required for increasing signal
strength. Please contact network administrator for more information on extending LAN.
5. Two different types of cables shall be used for connecting the recorder on Ethernet as follows. For
connecting the recorder to LAN HUB, then standard straight-through Ethernet cable should be
used. For connecting the recorder to PC/Notebook directly, then crossover Ethernet cable should
be used.
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