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Serial Communications Instructions Section 3-23
Precautions Communications parameters consist of the protocol mode, baud rate, data
format (protocol macro transmission method and protocol macro maximum
communications data length), and other parameters. Refer to CJ-series Serial
Communications Boards and Serial Communications Unit Operation Manual
(W336) for the serial port that is to be set for details.
Related Flags and Words The following flags can be used as required when executing STUP(237).
These flags are in the Auxiliary Area.
Examples When CIO 0.00 turns ON in the following example, the communications
parameters for serial port 1 of the Serial Communications Unit will be
changed to the settings contained in the 10 words from D100 to D109. In this
example, the setting are changed the protocol mode to the protocol macro
mode.
Name Address Contents
Serial Port 1 Parameters
Changing Flag
A619.01 ON when the communications parame-
ters are being changed for serial port 1.
Serial Port 2 Parameters
Changing Flag
A619.02 ON when the communications parame-
ters are being changed for serial port 2.
Port Parameters Changing
Flags for ports 1 to 4 on
Serial Communications
Units 1 to 15.
A620.01 to
A620.04
A635.01 to
A635.04
ON when the communications parame-
ters are being changed for a port on a
Serial Communications Unit.
S: D100
S+1: D101
S+2: D102
S+9: D109
6
6
0.00
#0110
D100
D30000
D30001
D30002
D30009
to to
to to
Port setting: Default, Protocol mode: 6 hex (protocol macro).
Baud rate: Default (9,600 bps)
Transferred
DM words allocated to the communications
setup of the Serial Communications Unit
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