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SECTION 3. INSTRUCTION SET BASICS

3-9

3.10 ERROR CODES

There are four types of errors flagged by the

CR23X: Compile, Run Time, Editor, and

Mode. Compile errors are errors in programming

which are detected once the program is entered

and compiled for the first time (

, or

Mode entered). If a programming error is

detected during compilation, an E is displayed with

the 2 digit error code. The Instruction Location

Number of the Instruction which caused the error

is displayed to the right of the error code (e.g., E23

105; 105 indicates that the fifth instruction in Table

1 caused error 23). Error 22, missing END, will

indicate the location of the instruction which the

compiler cannot match with an END instruction.

Run time errors are detected while the program

is running. The number of the instruction being

executed at the time the error is detected is

displayed to the right of the error code (e.g.,

E09 06 indicates that an Instruction 6 in the

program is attempting to store data in input

locations beyond those allocated). Run time

errors 9 and 31 are the result of programming

errors. While E08 will display the number of the

instruction that was being executed when the

error occurred, it is unlikely that the instruction

has anything to do with the error.

If there is a run time error in a table with a fast

execution interval, the error may be written to

the display so frequently that it seems the

CR23X is not responding to the keyboard.

Once the program is stopped, normal function

will return. To stop the program some entry

must be changed which requires recompiling

(Section 1.1.4). For example, enter 0 for the

execution interval of Table 1 (i.e., enter

as fast as possible). The

program can easily be stopped by pressing any

key while the CR23X is displaying “Hello” after

applying power (turn the CR23X off and then on

again). This delays program execution for

about two minutes, allowing the program to be

changed.

Error 8 is the result of a hardware and software

"watchdog" that checks the processor state,

software timers, and program related counters.

The watchdog will attempt to reset the

processor and program execution if it finds that

the processor has bombed or is neglecting

standard system updates, or if the counters are

out of allowable limits. Error code 08 is flagged

when the watchdog performs this reset. E08 is

occasionally caused by voltage surges or

transients. Frequent repetitions of E08 are

indicative of a dead lithium battery, a hardware

problem, or a software bug. Check the lithium

battery voltage (

). If the lithium battery

voltage is good (2.4 volts or higher), contact

Campbell Scientific for assistance as a

hardware or software bug is indicated. The

CR23X keeps track of the number of times (up

to 99) that E08 has occurred. The number can

be displayed and reset in the

Mode

(Section 1.6) or with the Telecommunications A

command (Section 5.1).

Error 10 is displayed if the primary power drops

below 11 volts. When this happens, the CR23X

stops executing programs. The low voltage

counter (

Window 9, Section 1.6) counts

the number of times the voltage drops below 11

volts and displays a double dash (--) if the

CR23X is currently in a low voltage shut down.

Low voltage shut down terminates when voltage

is raised above 11 volts.

Editor errors are detected as soon as an

incorrect value is entered and are displayed

immediately.

Mode errors indicate

problems with saving or loading a program.

TABLE 3.10-1. Error Codes

Code Type Description

03 Editor Program table full

04 Compile Intermediate Storage full

05 Compile Storage Area #2 not

allocated

08 Run Time CR23X reset by

watchdog timer

09 Run Time Insufficient Input Storage

10 Run Time Low battery voltage

11 Editor Attempt to allocate more

Input or Intermediate

Storage than is available

12 Compile Duplicate

13 Run Time Low 5 V supply

20 Compile SUBROUTINE encountered

before END of previous

subroutine

21 Compile END without IF, LOOP or

SUBROUTINE

22 Compile Missing END

23 Compile Nonexistent

SUBROUTINE

24 Compile ELSE in SUBROUTINE

without IF

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 373 374

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