IDEC FC4A-C10R2 User Manual page 308

17: U C
SER OMMUNICATION
DSR Input Control Signal Option D8105
Special data register D8105 is used to control data flow between the
depending on the DSR (data set ready) signal sent from the remote terminal. The DSR signal is an input to the
to determine the status of the remote terminal. The remote terminal informs the
remote terminal is ready for receiving data or is sending valid data.
The DSR control signal option can be used only for the user communication through the RS232C port 2.
D8105 = 0 (system default):
DSR is not used for data flow control. When DSR control is not needed, set 0 to D8105.
D8105 = 1: When DSR is on, the
D8105 = 2: When DSR is off, the
D8105 = 3: When DSR is on, the
and is used for controlling transmission to a remote terminal with a slow processing speed, such as a
printer. When the remote terminal is busy, data input to the remote terminal is restricted.
D8105 = 4: When DSR is off, the
D8105 = 5 or more:
DTR Output Control Signal Option D8106
Special data register D8106 is used to control the DTR (data terminal ready) signal to indicate the
status or transmitting/receiving status.
The DTR control signal option can be used only for the user communication through the RS232C port 2.
D8106 = 0 (system default):
While the
data. While the
operating status.
17-30
I
NSTRUCTIONS
MicroSmart
ON
DSR signal
OFF
Transmit/receive
MicroSmart
ON
DSR signal
OFF
Transmit/receive
MicroSmart
ON
DSR signal
OFF
Transmit
MicroSmart
ON
DSR signal
OFF
Transmit
Same as D8105 = 0. DSR is not used for data flow control.
is running, DTR is on whether the
MicroSmart
MicroSmart
MicroSmart
ON
DTR signal
OFF
« FC4A M
MicroSmart
can transmit and receive data.
Impossible
Possible
can transmit and receive data.
Impossible
Possible
can transmit data. This function is usually called "Busy Control"
Impossible Possible
can transmit data.
Impossible Possible
is stopped, DTR remains off. Use this option to indicate the
Stopped Running
S U ' M
ICRO MART SER S ANUAL
RS232C port 2 and the remote terminal
using DSR whether the
MicroSmart
Impossible
Impossible
Impossible
Impossible
MicroSmart
is transmitting or receiving
MicroSmart
Stopped
»
MicroSmart
operating
MicroSmart