SECTION 9. INPUT/OUTPUT INSTRUCTIONS

data line became active. If this occurs the sensor CR10 will not respond to the SDI-12 recorder. Most instructions execute fast enough that when Instruction 106 misses the initial SDI- 12 address, a subsequent retry by the recorder will work.

PARAM.

DATA

 

NUMBER

TYPE

DESCRIPTION

01:

4

ADDRESS (0-9)

02:

4

TIME/VALUES

 

 

tttn:

 

 

ttt=time(sec)

 

 

n=no. values

03:

4

LOCATION starting

 

 

loc. for n values

Input locations altered:

0

Intermediate locations required: 82. This requires that the default setting of 64 be increased. The *A mode (second window) is used to specify Intermediate locations.

PARAMETER 1. ADDRESS

Enter the address for the CR10 acting as a SDI-12 sensor (0-9). Each SDI-12 sensor must have a unique address. Non standard addresses may be used by entering the appropriate ASCII code.

PARAMETER 2. TIME/VALUES

Enter the time required for the sensor CR10 to complete subroutine 98 followed by the number of input locations to be returned to the SDI-12 recorder. The format of the entry must be 'tttn' where ttt specifies the time and n is the number of input locations values.

The time to complete subroutine 98 is the time required to execute all instructions from Instruction 106 (SDI-12 sensor) to the final Instruction 95 (End). The entered time may be longer than the actual time without slowing the data exchange because the sensor CR10 signals the SDI-12 data recorder when the data is ready for transfer. If the entered time is too short the sensor CR10 will not respond properly and the data values will not be transferred. Enter a time of 0 to transfer the values already stored in input locations, in this case the remainder of the subroutine is not executed.

A maximum of 9 input locations can be transferred at one time since 'n' is a single digit.

9-20

See Parameter 3 LOCATION description for information on transferring more than 9 locations.