Campbell Scientific CR10X Measurement and Control System - Manual (Page 150)

SECTION 9. INPUT/OUTPUT INSTRUCTIONS
9-18
*** 100 SDM TDR ***
FUNCTION
Instruction 100 is used to control and measure
the CSI TDR Soil Moisture Measurement
System with control ports C1, C2, and C3. See
the TDR manual for information on Instruction
100.
*** 101 SDM-INT8 ***
FUNCTION
The 8 channel Interval Timer (INT8) is a
measurement module which provides processed
timing information to the datalogger. Each of the 8
input channels may be independently configured to
detect either rising or falling edges of either a low
level AC signal of a 5 V logic signal. Each channel
may be independently programmed. See the
SDM-INT8 manual for detailed instructions and
examples.
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 2 SDM Address (00..33,
base 4)
02: 4 *Input config; channels
8,7,6,5
03: 4 *Input config; channels
4,3,2,1
04: 4 **Function; channels
8,7,6,5
05: 4 **Function; channels
4,3,2,1
06: 4 ***Averaging option
07: 4 Input location number
08: FP Mult
09: FP Offset
Execution Time: 2.3 ms + 1.65 ms/value +
averaging interval if used
Intermediate locations required: 1
* Input configurations:
0 = 5V logic level, rising edge
1 = 5V logic level, falling edge
2 = low level ac, rising edge
3 = low level ac, falling edge
** Function:
0 = none
1 = period in ms
2 = frequency in kHz
3 = time since previous channel's
edge in ms
4 = time since channel 1 in ms
5 = counts on channel 2 since
channel 1, linear interpolation
6 = frequency in kHz (low resolution)
7 = counts
8 = counts on Channel 2 since
Channel 1, no interpolation
*** Averaging option:
0 Average over execution interval
0- Continuous averaging
XXXX Averaging interval in ms,
XXXX>0
XXXX- Capture all events until XXXX
edges of channel 1 (09999)
9999- Test memory
Input locations altered: 1 per function
*** 102 SDM-SW8A ***
FUNCTION
The 8 channel SDM-SW8A Switch Closure
Input Module is a peripheral for measuring up to
8 channels of switch closure or voltage pulse
inputs. Each channel may be configured to
read single-pole double-throw (SPDT) switch
closure, single-pole single-throw (SPST) switch
closure, or voltage pulse. Output options
include counts, duty cycle, or state.
The SW8A is addressed by the datalogger,
allowing multiple SW8A's to be connected to
one datalogger. 16 addresses are available,
but for most applications Campbell Scientific
recommends no more than 4 SW8A's be
connected to one datalogger.
If more channels are requested than exist in
one module, the datalogger automatically
increments the address and continues to the
next SW8A. The address settings for multiple
SW8A's must sequentially increase. For
example, assume 2 SW8A's with an address of
22 and 23 are connected, and 12 Reps are
requested. Eight channels from the first SW8A
and the first 4 channels from the second SW8A
will be read.
Only one Function Option (Parameter 3) may be
specified per P102 Instruction. If all 4 functions
are desired, 4 P102 Instructions are required.