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INWORD()
Reads in a 16-bit word from a port
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Syntax
INWORD(<nPort|cHexPort>) --> nWord
Argument
<nPort|cHexPort> Designates a port address from which a word with a
16-bit value is read. This value can be a decimal integer or
hexadecimal string.
Returns
INWORD() returns the word read from the designated port, or a value of -
1 when an error occurs.
Description
CA-Clipper Tools always attempts to offer finished solutions at the
highest-possible level for such standard hardware as a serial interface
port. However, if you read highly specialized systems and their ports
from CA-Clipper, use INBYTE() or INWORD(). INWORD() allows you to read
from interfaces that return the data from a port as a 16-bit value.
Note
. A returns random value for a nonexistent port or one that
cannot be read.
Examples
Show a read from a 16-bit port:
. With a decimal parameter:
? INWORD(512) // Read from an additional device
. With a hexadecimal parameter:
? INWORD("200") // The same port address
See Also:
INBYTE()
OUTWORD()
NUMHIGH()
NUMLOW()
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