Rockwell-automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Manual de usuario descargar pdf (Pagina 175)

Publication IASIMP-QS010B-EN-P - October 2009 175

Network Communication Chapter 2

Read and Write ASCII Characters

Create and Modify Strings of ASCII Characters

Convert Data to or from ASCII Characters

Instruction Code Description

ABL Determine when the buffer contains termination characters

ACB Count the characters in the buffer

ACL Clear the buffer

Clear out ASCII Serial Port instructions that are currently executing or

are in the queue

AHL Obtain the status of the serial port control lines

Turn on or off the DTR signal

Turn on or off the RTS signal

ARD Read a fixed number of characters

ARL Read a varying number of characters, up to and including the first set of

termination characters

AWA Send characters and automatically append one or two additional

characters to mark the end of the data

AWT Send characters

Instruction Code Description

CONCAT Add characters to the end of a string

DELETE Delete characters from a string

FIND Determine the starting character of a substring

INSERT Insert characters into a string

MID Extract characters from a string

Instruction Code Description

STOD Convert the ASCII representation of an integer value to a SINT, INT,

DINT, or REAL value

STOR Convert the ASCII representation of a floating-point value to a REAL

value

DTOS Convert a SINT, INT, DINT, or REAL value to a string of ASCII characters

RTOS Convert a REAL value to a string of ASCII characters

UPPER Convert the letters in a string of ASCII characters to upper case

LOWER Convert the letters in a string of ASCII characters to lower case

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Rockwell-automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Manual de usuario Pagina 175