Rockwell Automation 1771-DB Basic Module User Manual - Series A - Manual (Page 155)

Error Messages and Anomalies
Chapter 9
9–3
EXTRA IGNORED — Error occurs when an INPUT statement requiring
numeric data, receives numeric data followed by letters. Letters are
ignored. Error also occurs from CALL 61.
MEMORY ALLOCATION — A MEMORY ALLOCATION error occurs
when:
user memory (RAM) is full.
BASIC cannot determine memory bounds because the system control
value MTOP is altered.
RAM contains an incomplete program file.
you attempt to access STRINGS that are “outside” the defined string
limits.
NO DATA — A NO DATA message occurs if a READ STATEMENT is
executed and no DATA STATEMENT exists or all DATA was read and a
RESTORE instruction was not executed. The message ERROR: NO DATA
– IN LINE XXX is printed to the console device.
PROGRAMMING — If an error occurs while the BASIC Module is
programming an EPROM, a PROGRAMMING error occurs. An error
during programming destroys the EPROM file structure. You cannot save
any more programs on that particular EPROM once a PROGRAMMING
error occurs. If the EPROM size is exceeded, the previously stored
program may be partially altered.
Your module generates the following messages when an error occurs while
trying to execute a CALL routine.
NEGATIVE VALUES NOT VALID — This error occurs when you
attempt to convert a negative number with CALL 21 or 27.
CHECKSUM ERROR FROM RECORDER — This error occurs when
bad data is received from the tape while executing CALLS 33, 34 or 39.
You should check for correct cable connections and baud rate. Also check
your tape cartridge.
9.2
Error Messages from
BASIC (continued)
9.3
Error Messages from
CALL Routines
9.3.1
Data Conversion
CALL Error Messages
9.3.2
Peripheral Port Support
CALL Error Messages