Ascii Serial Port Instructions; Chapter 6 - Allen-Bradley Micro800 General Instructions Manual

ASCII serial port instructions

ASCII serial port instructions are communication instructions that use or alter the
communication channel for receiving or transmitting data.
Function block
ABL on page 110
ACB on page 111
ACL on page 114
AHL on page 116
ARD on page 118
ARL on page 121
AWA on page 123
AWT on page 125
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
Description
Determine number of characters in buffer (up to and including end of line character)
Determine total number of characters in buffer
Clear the receive and transmit buffers
Set or reset modem handshake lines
Read characters from the input buffer and place them into a string
Read one line of characters from the input buffer and place them into a string
Write a string with user-configured characters appended to an external device
Write characters from a source string to an external device

Chapter 6

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