Varec Network Adapter 4000, Installation And Operation Manual, Page: 21 / 80

11
4000 Configuration
3 Configuration
The Varec Model 4000 Advanced Technology Transmitter (ATT) must be configured for
the specific tank, attached sensors, and host interface. This section provides detailed
information on ATT configuration.
The ATT can be configured with a 1200 Hand Held Terminal or from a host program
such as Varec TankView.
3.1 Configuration Parameters
Configuration parameters associated with ATT operation are entered and modified
using the Model 1200 and can be divided into the following areas:
•
General Configuration - includes units of measure, level calibration, temperature
type selection, and alarm setpoints.
•
Host Configuration - includes the type of host interface used, baud rate selection,
and emulation modes for other level transmitters.
3.2 1200 Hand Held Terminal
The ATT can be used with a 1200 Hand Held Terminal, see Figure 3-3 on page 13. The
Model 1200 provides a local terminal interface to configure the ATT and encoder at
tankside. It is connected to the ATTI bus. It can be physically attached via two banana
plugs located inside the terminal block housing.
The ATT uses the Model 1200 in a different mode of operation. Normally, the Model
1200 polls the ATTI BUS device, recognizes it, and goes into an internal menu system
that is specifically tailored to that ATTI Bus device. The ATT however, uses the Model
1200 in what is called ASCII Terminal mode. In this mode, the Model 1200 sends
keyboard activity to the ATT and displays screen information from the ATT. The ATT can
not be configured with the Rosemount Model 275 Terminal.
Because of the way the ASCII Terminal mode works on the Model 1200, the ATT is unable
to poll any ATTI BUS device while communicating to it. The ATT goes from an operational
mode to an off-line mode. The operational mode is automatically switched to when the
Model 1200 is removed from the ATTI BUS bus.
Warning! The 1200 Hand Held Terminal on the ATT is not Intrinsically Safe. Care must be
taken to only use in a non-hazardous environment.
Function keys F1 through F4, defined in Figure 3-1 on page 12, are used for basic
scrolling of the ATT menus and selection of configuration parameters.