Campbell Scientific CR10 CR10 Measurement and Control - Page 136

SECTION

9.

INPUT/OUTPUT INSTRUCTIONS

o4'.

Option,

4

digit code

ABCD

A

Trigger

0

-

Trigger

on

1st

analog channel

1

-

Digitaltrigger

on

Control Port

#1

2

Same as 0, but

set

DigitalControl

Port

#1

high when

trigger

is met, low

when done

measuring

B

Trigger option

0

-

Trigger

immediately

1

-

Trigger

if

above limit (high)

2

-

Trigger if below

limit (low)

3

-

Trigger on

rising edge

4

-

Trigger

on

falling edge

C

Destination

0

-

lnput Storage

1

-

Serialport

9600 baud

2

-

Serialport

76,800 baud

3

-

Serialport

76.800 baud to

sM192/716

D

Measurement

0

-

Differential

measurement

1 -

Single-ended

measurement

Scan

interval

(ms,

minimum

1.333

x

reps,

limited

to

1.333-50

ms)

Number of scans (units

of

1000)

Number of samples

saved before

trigger

(not

used with serial output)

Trigger

limit

(mV,

unscaled measurement)

Excitation

voltage

(mV)

1st input location

in

which

to

store data

Multiplier (not used with

serialoutput)

Otfset

(not used with

serialoutput)

05:

FP

07:

08:

09:

10:

FP

4

FP

4

4

FP

FP

12:

9-12

***

24

CALIBRATION

r**

FUNCTION

Put

19

calibration values into input

locations.

lf

C

C-)

is keyed before entering

the

input

location, then the automatic calibrations are

simply displayed, not

measured.

Otherwise,

calibration takes place only

when

Instruction 24

is executed; automatic calibration is disabled

(Section

13.7).

Input locations

altered:

19

,**

25

PORT

READ

***

FUNCTION

The status of a group of ports selected by

a

mask is read and placed in

an

input location.

The

status

is

a

base

2

representation

of

the

ports converted

to base

10.

Port

1 is

the

least

significant

bit,

For example, if all ports are

and

the

port

status

is

as follows:

PARAM.

NUMBER

PORT

VALUE

STATUS

(0=low,

1=high)

DATA

TYPE

DESCRIPTION

4

lnput location number,

key

C

t-)

for

results of

automatic calibration

c8 c7 c6

c5 c4

c3

c2

c1

1286432168421

00

100

Base

10

equivalent:

32

+

16

+

2

=

50

50

willbe

stored in the input location.

The

mask

is

also base

2 representation;

1

indicates

the

port

is

to

be read,

0

results

in

a

0

for

the

port regardless

of

the

status

of

the

port

(AND

operation).

For example,

if

50

(see

example)

is entered for

the

mask, ports 2,

5,

and

6

are

read.

lf only

pofts

4 and 5 are

high,

the status will

be

16

(port

4

is not read).

NOTE:

Voltages

in excess of 5.5 volts

applied to

a

control port can cause the

CR10

to

malfunction.

Campbell Scientific CR10 CR10 Measurement and Control - Page 136

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