Campbell-scientific CR10X Measurement and Control System Instrukcja Użytkownika Pobierz pdf (Strona 152)

SECTION 9. INPUT/OUTPUT INSTRUCTIONS

9-20

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

manual for detailed instructions and examples.

PARAM. DATA

NUMBER TYPE DESCRIPTION

01: 2 Reps (# of CD16AC

modules sequentially

addressed)

02: 2 Starting SDM Address

(base 4: 00..33)

03: 4 Starting input location

Input locations read: 16 per repetition

*** 105 SDI-12 RECORDER ***

NOTE: Version 1.2 of the SDI-12

specification has been implemented in the

CR10X. Features added in this version are

marked with a dagger (†) and may not be

supported by older SDI-12 sensors.

Instruction 105 allows data to be collected from

SDI-12 sensors. The sensor’s SDI-12 data line

is connected to a control port (C1-C8). The

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

terminal on the CR10X wiring panel. SDI-12

power may be connected to 12V.

If multiple SDI-12 sensors are used, up to ten

sensors may be connected to a single control

port, but each sensor must have a unique

address and requires a separate Instruction

105.

CAUTION: Instruction 97 with the voice

option and the SDI-12 instructions may not

be in same table. Instruction 97 must be in

Table 1 and the SDI-12 instructions must be

in Table 2.

PARAM. DATA

NUMBER TYPE DESCRIPTION

01: 4 Address (0-9, †10-

126)

02: 2 Command (Table 9-8)

03: 2 Control Port (C1-C8)

04: 4 Input location number

05: FP Mult

06: FP Offset

Input locations altered: 1-9 (†1-99), depending

on the SDI-12 sensor

Intermediate locations required: 21

PARAMETER 1. ADDRESS

Enter the address of the SDI-12 sensor (0-9).

†Extended addresses (10-126) may be used by

entering the decimal equivalent for the

appropriate ASCII character (see Appendix E).

For example, address ‘A’ would be entered as

65.

PARAMETER 2. 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 CR10X:

TABLE 9-8. SDI-12 Command Codes

ENTRY COMMAND DESCRIPTION

0 M Initiate Measurement

0 -- C †Initiate Concurrent

Measurement

1..9 M1..M9 Additional

Measurement

commands specified

by the SDI-12 sensor

10 V Initiate Verify

sequence

11 I Send Identification

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 361 362

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