Confirming the Unit Settings and Design ContentsFP2 Serial Data Unit
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3.2 Setting the Transmission Speed and Transmission Format
3.2 Setting the Transmission Speed and Transmission
Format
When serial communication is being carried out with the external device using the serial
data unit, the transmission speed and transmission format must be specified in advance
to match those of the external device that serves as the other station.
With the FP2 serial data unit, the transmission speed and transmission format are set
to match those of the external device using the transmission format setting switches
(DIP switches), and other transmission format parameters are set automatically to
values determined ahead of time.
To change the values of these automatically set transmission format items, set the
changes in the shared memory and then turn the software reset (Y1D) function on and
then off to make the changes effective.
Changing the transmission speed and transmission format
Item Settings when
shipped from factory
Contents set by
switches, which can
be changed
Contents set in
shared memory,
which can be changed
Transmission speed 9600bps 4800bps
9600bps
19200bps
4800bps
9600bps
19200bps
Data length 8 bits 7 bits
8 bits
7 bits
8 bits
Parity check Valid (odd parity) — Invalid
Odd parity
Even parity
Stop bit length 1 bit — 1 bit
2 bits
Control signals CS and
CD
Invalid — Invalid/Valid
End code C
R
(H0D) — Any code
C
R
(H0D)
C
R
(H0D) and LF (H0A)
EXT (H03)
Start code Invalid — Invalid/Valid
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