17: U
SER
C
OMMUNICATION
I
NSTRUCTIONS
17-30
« FC4A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
»
DSR Input Control Signal Option D8105
Special data register D8105 is used to control data flow between the
MicroSmart
RS232C port 2 and the remote terminal
depending on the DSR (data set ready) signal sent from the remote terminal. The DSR signal is an input to the
MicroSmart
to determine the status of the remote terminal. The remote terminal informs the
MicroSmart
using DSR whether 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
MicroSmart
can transmit and receive data.
D8105 = 2:
When DSR is off, the
MicroSmart
can transmit and receive data.
D8105 = 3:
When DSR is on, the
MicroSmart
can transmit data. This function is usually called “Busy Control”
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
MicroSmart
can transmit data.
D8105 = 5 or more:
Same as D8105 = 0. DSR is not used for data flow control.
DTR Output Control Signal Option D8106
Special data register D8106 is used to control the DTR (data terminal ready) signal to indicate the
MicroSmart
operating
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
MicroSmart
is running, DTR is on whether the
MicroSmart
is transmitting or receiving
data. While the
MicroSmart
is stopped, DTR remains off. Use this option to indicate the
MicroSmart
operating status.
DSR signal
ON
OFF
Possible
Impossible
Impossible
Transmit/receive
DSR signal
ON
OFF
Possible
Impossible
Impossible
Transmit/receive
DSR signal
ON
OFF
Possible
Impossible
Impossible
Transmit
DSR signal
ON
OFF
Possible
Impossible
Impossible
Transmit
MicroSmar t
DTR signal
ON
OFF
Stopped
Running
Stopped
Summary of Contents for FC4A-C10R2
Page 1: ...FC4A SERIES Micro Programmable Logic Controller User s Manual FC9Y B812 ...
Page 6: ...PREFACE 4 FC4A MICROSMART USER S MANUAL ...
Page 94: ...2 MODULE SPECIFICATIONS 2 74 FC4A MICROSMART USER S MANUAL ...
Page 184: ...6 ALLOCATION NUMBERS 6 20 FC4A MICROSMART USER S MANUAL ...
Page 218: ...8 ADVANCED INSTRUCTIONS 8 8 FC4A MICROSMART USER S MANUAL ...
Page 240: ...11 BINARY ARITHMETIC INSTRUCTIONS 11 8 FC4A MICROSMART USER S MANUAL ...
Page 244: ...12 BOOLEAN COMPUTATION INSTRUCTIONS 12 4 FC4A MICROSMART USER S MANUAL ...
Page 252: ...13 SHIFT ROTATE INSTRUCTIONS 13 8 FC4A MICROSMART USER S MANUAL ...
Page 274: ...15 WEEK PROGRAMMER INSTRUCTIONS 15 8 FC4A MICROSMART USER S MANUAL ...
Page 378: ...22 DUAL TEACHING TIMER INSTRUCTIONS 22 4 FC4A MICROSMART USER S MANUAL ...
Page 386: ...23 INTELLIGENT MODULE ACCESS INSTRUCTIONS 23 8 FC4A MICROSMART USER S MANUAL ...
Page 408: ...24 ANALOG I O CONTROL 24 22 FC4A MICROSMART USER S MANUAL ...
Page 426: ...26 COMPUTER LINK COMMUNICATION 26 6 FC4A MICROSMART USER S MANUAL ...