Campbell Scientific CR10X Measurement and Control System - Manual (Page 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