Analog outputs (optional) – Vaisala DM500 User Manual
Page 77
Chapter 14 _________________________________________________________ Output Interfaces
VAISALA _______________________________________________________________________ 75
3.
Select ►
Communications
, press .
4.
Select
Comm. mode
, press
SET
.
5.
Select one of the following mode, press
SELECT
:
STOP: Outputs measurements only by command. All
commands can be used.
RUN: Outputs measurements automatically in a format set by a
serial command FORM. Only serial command S can be used.
POLL: Outputs measurements only with the serial command
SEND.
MI70 Link: Sets the MI70 Link program communication
parameters. Other communication settings have no effect when
using MI70 Link software.
6.
Set the polling address if needed, select
Polling address
, press
SET.
7.
Give the address for POLL communication mode by using
numerical buttons, press
OK
.
8.
Select
Baud rate
, press
SET
.
9.
Select one of the following baud rate, press
SELECT
:
300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600,115200
bps
10.
Select
Serial format
, press
SET
.
11.
Select the data bits (7 or 8), parity (N = none, E = even,
O = odd) and stop bits (1 or 2), press
SELECT
.
12.
Select
Echo
or
Half duplex
, press
NO/YES
to turn the functions
on/off.
13.
To return to the main view, press
EXIT
.
Analog Outputs (Optional)
DMI500 user interface can be equipped with three optional 4...20 mA
passive current outputs. These 2-wire channels must be powered with
12...28 VDC external power supplies (not provided). The analog
outputs are galvanically isolated from electronics but they are not
isolated from each other. Thus, you need a separate (isolated) power
supply for each monitored analog channel.