Nokeval 2800-2061, Руководство пользователя

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8
Serial output RS485/RS232 (option)
Meter may be provided with optional serial output and
you can read measurements by e.g. PC. Display
programming can not be made via serial port. Addi-
tional card provides serial signal RS232 and RS485,
only one of those can be selected.
Serial signal is isolated from both input signal and
power supply. Meters with RS485 can be max. 31 in
same loop and longest distance 1000m. RS232 en-
ables only connection of two devices and max. dis-
tance 10..20 m.
In programming stage you can first select card type
(serial) mounted to slot B or C and then address and
Baud rate. Baud rates are: 300, 1200, 2400, 4800,
9600, 19200 and addresses 0...127.
Accept selection and move forward by
-key. You
come back to previous level always by -key.
Program remembers card type mounted, if ithas been
saved by save command when leaving program. In
case you can not choose serial card, slot has
automatically recognized card (plug and play).
Terminal connections:
By serial signal RS485 last unit must be
terminated by 110 ohm resistor. you can
make termination at terminal connectors
or by connecting jumper J1 to ON-
position.
Serial card
6
5
4
3
2
1
Card slot A Card slot B or C
Input
6
5
4
3
2
1
Com
RxD
Serial output
A
B
RS-485
TxD
2000-RS
on
of
f
Te
rm
Fs
on
of
f
on
of
f
on
of
f
Te
rm
Fs
Te
rm
Fs
Te
rm
Fs
R S 232 RS 485
channel's m iddle
un it
(F actory settings)
R S 485
channe l's last
unit
Mainmenu Selection Term Description
- move up/down to menu, - move to the adjustment level/next level, - accept selection/return to the previous level
Baud r 300...19200 Baud rate Baud rate selection: 300..19200
Addres Addre 0...127 Serial address Serial address selection: 0..127
RS-485 Off
Slot B Serial card RS485 not in use
Serial card RS485 installed slot B RS485 serial signal selection.
Note ! if used to serieal signal RS232, selection doesn't
need to make.
Serial signal configuration