KMB NOVAR 2600, Руководство по эксплуатации

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NOVAR 2600 Operating Manual
6. Computer Controlled Operation
Monitoring the currently measured values and the instrument setup can be done not only on the
instrument panel but also using a local or remote computer connected to the instrument via a
communication link. Such an operation is more comfortable, and it also allows you to use all the
options of the instrument, such as adjusting the inputs/outputs or setup and the monitoring of courses
recorded into the internal memory of the instrument, which it is not possible from the panel of the
instrument.
Following chapters describe instrument communication links from the hardware point of view and
embedded webserver only. The detailed description of ENVIS program can be found in the program
manual.
6.1 Communication Links
6.1.1 Local Communication Link
Instruments can be equipped with a serial interface USB 2.0, on the front panel. Using this interface,
adjusting the parameters of the instrument and the transmission of data into a portable computer can
be accomplished. It requires to interconnect the instrument with the PC using the appropriate
communication cable (type USB-A, see optional accessory list).
Considering the fact that the instruments can be also equipped with a remote communication link, the
described communication link is called
Local .
6.1.2 Remote Communication Links
The instruments may be optionally equipped with the remote communication link for operation of the
instrument via a remote computer. Subsequently, this computer can execute a remote adjusting of the
instrument and transmission of current or recorded data.
The type of interface can be either RS-485 or Ethernet. Appropriate connector is situated at the rear
panel. It is supposed the cable for remote communication link to be provided by customer.
One or more instruments can be connected to the remote PC via this link. Each instrument must have
an adjusted proper remote communication address and protocol. These specifications can be set
manually or by the computer via a local communication link in ENVIS program.
The remote communication link is always isolated from the internal circuits of the instrument.
Selected models can be equipped with the second communication link RS-485.
6.1.3 RS-485 Interface (COM)
Up to 32 instruments at a maximum distance of 1,200 metres can be connected to this interface. Used
signals :
A+ , B- , G , and optionally A2+ , B2 -, G2 .
Each instrument must have a different communication address within the range of 1 to 253 preset
during the installation.
A 232/485 or USB/485 level converter connected to a standard serial port must be installed on the
computer side. The converter must provide an automatic communication flow direction switching
function. For suitable converters see optional accessory list.
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