Publication 1747-RM001G-EN-P - November 2008
13-98 SLC Communication Channels
ASCII Communications
The SLC 5/03 (OS301 and higher), SLC 5/04, and SLC 5/05 processors
support user-defined ASCII protocol by configuring channel 0 for User mode.
In User mode, all received data is placed in a buffer. To access the data, use the
ASCII instructions in your ladder program. You can also send ASCII string
data to most attached devices that accept ASCII protocol.
Configuring Channel 0 for ASCII Communications
To configure an SLC 5/03, SLC 5/04 or SLC 5/05 processor channel 0 for
ASCII communications, do the following using your programming software.
TIP
Only ASCII instructions can be used when User mode is
configured. If you use a Message (MSG) instruction that
references channel 0, a 14H error occurs.
To bring up the Channel Configuration
interface, double-click on the Channel
Configuration icon.
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