Campbell 21X Návod k obsluze Strana 10

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21
X
MICROLOGGER
OVERVIEW
The 9-pin
serial
l/O
port provides
connection to
data storage
peripherals,
such
as the
SM192t16
Storage Module
or RC35 Cassette
Recorder,
and
provides
serial
communication
to
computer
or modem
devices for data transfer
or
remote
programming
(Section
6). This
9
pin port
does
NOT
have
the same
pin
configuration as
the
9
pin
serial
ports
currently used on
many
personalcomputers.
An
SC32A is required
to
OVl.l
ANALOG INPUTS
The
terminals in the
upper
strip
are
for
analog
inputs. The
numbering
on
the
terminals refers to
the diflerential channels; i.e.,
the
voltage
on
the
Hl
input
is
measured with respect
to the voltage
on
the
LOW input. When making
single-ended
measurements either
the
Hl
or
the
LOW
channel
may
be used independently
to measure the
voltage with
respect
to the
21X
ground.
Single-
ov-2
interface the
21X to a RS232
serial
port
(Section
6).
The
panel
also contains two terminal
strips
which
are used
for
sensor inputs, excitation,
control outputs, etc. Figure OV1-2 shows the
21X
panel
and the associated
programming
instructions.
ended channels are
numbered
sequentially,
e
the Hl and LOW sides of differential channel2
are
single-ended
channels 3 and
4, respectively
(Section
13.2).
The
analog input terminal
strip
has
an insulated
cover to reduce temperature
gradients
across
the input terminals. The cover is
required for
accurate thermocouple
measurements
(Section
13.4).
FfGURE OVl-z. 21X Wiring
Paneland Associated Programming
Instructions
SERI
L
I,/o
Tclccommunlcotlons
Progrom Control
Instructlons
96
(Tcpe,
Storog€ Module,
Printer)
97 Initiotc Telecommunicotions
9E Print Chorocter
Input,/Output
Progrom Cont
91
lf
92
lf
Comqnd
'f2J15C7E
ETCITATION OI'TUTS
Input/Output
Instructions
4.
Ex-Dcl-Se
5. AC Holf Br
6. Full Br
7.
5W
Holf
Br
8.
Ex-Del-Dlff
9.
Full Br-Mcx
11.Temp(107)
12 RH
(2o7)
22. Exclt-Del
EEE
tr1
EE
EE
rilE
ANAIOG
INPIIIS
Input/Output
Instructions
1. Volt
(SE)
2.
vott
(uFF)
4.
Ex-Del-Sc
5. AC Holf
Br
6. Full Br
7. 5W Holf
Br
E.
Ex-Del-Dlff
9. Full
Br-Mox
11 Temp
(107)
12 RH-(2O7)
15. Tcmp-TC SE
14. Temp-TC DIFF
17.
Tcmp-Poncl
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