Omega DP41-B Series, Руководство пользователя

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Communication Menu Configuration
26
StNd Serial Communication Interface Standard Submenu:
The following are the supported Communication Interface Standards: RS-232, RS-485 Half duplex and
RS-485 Full duplex.
Press ‘ RESET/ENTER ’ 23) Display shows "StOREd" stored message momentarily and then advances
to the "StNd" Serial Communication Interface Standard submenu.
Press ‘ RESET/ENTER ’ 24) Display flashes "RS-232" RS-232 Serial Communication Interface
Standard as default or previous selection.
Press ‘
䊱
/MAX ’ 25) Scroll or select only two types: "RS-232" Standard of Point-to-Point
Operation Class (one meter) or "RS-485" RS-485 Standard of Multi-Point
Operation Class (more than one meter) for your choice of Communication
Operation Class.
• "RS-232" RS-232 Standard is Point-to-Point Operation Class which
supports full duplex, direct connection between two (and only two)
devices for data exchanges, short distances and moderate data rate
such as the meter and your digital computer. No addresses are used
unless the meter is programmed for a "one meter bus".
• This controller, whether is setup with default RS-232 Serial
Communication or not, must be inspected visually for proper jumper
configuration of Communication RS232/RS485 Standard on
Communication Option Board And match it with this Menu Configuration
before attempting to communicate. Refer to Serial Communication
Option Manual.
• "RS-485" Standard of Multi-Point Communication Operation Class
shared wiring for a Data Terminal Equipment (DTE as host device or
computer) and more than one Data Communication Equipment (DCE as
meter/controller with compatible communications), designates a "Bus".
Several panel meters and a personal computer can share a bus, with the
computer serving as controller. The controller can acquire data by
transmitting the preassigned address for a meter followed by a
command for the meter to send selected information. When used, the
meter(up to 32 meters) can share a bus (with addresses from 0 to
decimal 199); all meters receive the data when the address is "00" .
• This "RS-485" option must be setup along with the jumper configuration
on the Communication Option Board to insure proper communication for
your selected-Communication Interface Standard.