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3-4
Section
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3-4-9 No-Protocol Communications
The TXD(48) and RXD(47) instructions can be used in no-protocol mode to ex-
change data with standard serial devices. For example, data can be received
from a bar code reader or transmitted to a serial printer. The serial devices can
be connected to the RS-232C port or Peripheral port, as shown in the following
diagrams.
CPM2C CPU Unit
RS-232C devices
Bar code reader
Serial printer
Other serial device
Note See
One-to-one Computer Connections
on page 69 for details on the system
configurations that can be assembled for serial communications.
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