Campbell Scientific CR10 CR10 Measurement and Control - Page 140

SECTION

9.

INPUT/OUTPUT INSTRUCTIONS

CD16AC's may be

addressed,

making

it

possible to control

a

maximum of 256 ports

from the first three datalogger

control

ports.

For

each

Rep,

the

16

ports

of

the addressed

SDM-CD16AC are sent according

to

16

sequential input locations starting at

the

input

location specified in parameter

3.

Any

non-zero

value stored in

an

input location activates

(connects to ground)

the

associated SDM-

CD16AC

port.

A value

of

zero

(0) deactivates

the port (open

circuit).

For example, assuming

2

Reps and

a

starting input location of

33,

OUTPUT

1

through

16 of

the

first

SDM-

CD16AC are set according

to

input locations

33

through 48, and

OUTPUT

1

through

16 of

the

second SDM-CD16AC are set according

to

input locations

49

through

64.

See the SDM-

CD16AC

manualfor detailed

instructions and

examples.

PARAM.

DATA

NUMBER

TYPE

DESCRIPTION

01:

2

Reps (# of CD16AC

modules sequentially

addressed)

02:

2

Starting

Address

(base

4:00..33)

03:

4

Starting input location

***

105

SDF12

RECORDER

***

Instruction

105

allows data

to

be

collected from

a SDI-12

sensor.

A single

Control

Port

is

connected to

the

SDI-12 sensor

data

line;

the

SDI-12 ground should be connected to a "G"

terminal on the

CR'|0

wiring

panel.

The

CR10

may also be used as

the

12

volt

power supply

for

sensors.

lf

multiple SDI-12 sensors are

used, each

sensor

requires a separate

lnstruction

105.

Instruction 105 is only in

standard

PROMs OS10-1.1 and OS10-1.2.

PARAM.

DATA

NUMBER

TYPE

DESCRIPTION

4

ADDRESS

(0-e)

2

COMMAND

(Table

1)

2

PORT (1-8)

4

INPUT

LOC.

FP

MULT

FP

OFFSET

Input locations

altered:0-9

(SDl-12

sensor

dependent)

lntermediate

Locations

required:

9

9-16

01:

02".

03:

04:

05:

06:

PARAMETER

1.

ADDRESS

Enter the address of the SDI-12

sensor

(0-9).

Non-standard addresses may be used entering

the appropriate ASCII code.

PARAMETER2.

COMMAND

Enter

a

number

to

select the command

to

be

sent to

the

SDI-12

sensor.

Usually

0

is

entered

to

select

the

M

command.

The following

Standard SDI-12 commands are supported by

the

CR10:

TABLE

9-6.

SDI-12

Command Codes

ENTRY

COMMAND

DESCRIPTION

lnitiate Measurement

Additional

Measurement

commands

specified

by

the SDI-12 sensor

Initiate Verify

sequence

Send

ldentification

OM

1..9

M1..M9

10

11

V

I

The

result of

a

M, M1-M9, or V

command

sequence is

numericaldata,

stored in

an

input

location. The

response to

the

I

command

is

information,

which

is

written directly

to

Final

Storage regardless of the Output Flag's state.

The

*7

mode of the datalogger

cannot be

used

with this type of data.

PARAMETER3.

PORT

Enter the

CRlO control

port connected to

the

SDI-12 sensor data

line.

Any

port 1-8

(C1-CB)

may be

used.

Default port

is C8.

PARAMETER

4.

INPUT LOCATION

Input location where

the

returned data

is

stored.

lf

multiple values

are

returned from

the

SDI-12

sensor they are stored

in

sequential input

locations beginning

at

the

specified location.

ERRORS

lf

the

CR10 receives either

an

incorrect

response

or

no response is received

from

a

SDI-12 sensor, the CR10

will

retry

the

operation.

lf, after

the

retries,

a

valid

response

has not been received,

the

CR10 will store a

-

99999

in

the

input location specified

in

Parameter

4.

Only the

first

location will

be

altered.

Sequential locations will contain values

f

rom previous measurements.

Campbell Scientific CR10 CR10 Measurement and Control - Page 140

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