Hach-Lange SC 200 Profibus network card User Manual - Manual (Page 8)

Configure the network
D A N G E R
Electrocution Hazard. Always remove power from the instrument before
making any electrical connections.
The Profibus network card provides an interface for RS485 connection.
Before use, the network card must be configured for the location in the
network. Use the switch settings on the top of the network card for
configuration (refer to the Installation section).
1. Termination switch–Termination Off. Set the switch to this position if
this is not the last slave on the bus.
2. Termination switch–Termination On ("T" position). Set the switch to
this position if this is the last or only slave device on the bus.
Operation
User navigation
Refer to the controller documentation for keypad description and
navigation information.
Setup the network
When the Profibus network card is installed, the controller requires the
correct configuration of the device and data order.
Note: Refer to the controller documentation for keypad description, basic navigation
information and controller setup.
1. Select Network setup from the Settings menu.
2. Select, enter or change values and then push the ENTER key.
Option Description
Telegram Manages the Telegram data structure. Auto configuration:
The Telegram is automatically configured with 16 data bytes
from each sensor and the controller. In the Auto configuration
the Telegram structure can be viewed and a new auto
configuration can be started. Manual configuration: The
Telegram is configured manually. The devices and the device
data tags included in the Telegram can be selected.
• View configuration— Views the current Telegram data
configuration
• Start Auto config— Starts a new auto configuration process
which may need some sensor setup changes
• Add/Remove devices— Selects the devices included in the
Telegram
• Add/remove tags— Selects telegram data tags for each
device
• Setup telegram mode— Selects the auto configuration
(default) or the manual configuration mode.
Profibus
DP Selects one of the following options:
Address— Changes the slave address
Data order— Sets the sequence of bytes when transmitting
floating point values. A floating point value consists of 4 bytes.
• Normal = IEEE Float Big Endian (Default setting)—The pairs
are not swapped. This mode fits to all known Profibus master
systems.
• Swapped = IEEE Float word wise swapped: Swaps the first
pair of bytes with the last pair.
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