IDEC FC6A-C16K1CE Communications Manual page 110

5: U C
SER OMMUNICATION
DTR Output Control Signal Option D8106
Special data register D8106 is used to control the DTR (data terminal ready) signal to indicate the FC6A Series MicroSmart
operating status or transmitting/receiving status.
The DTR control signal option can be used only for the user communication through the RS232C port 1 to port 3.
The control status of each port is allocated as shown below:
Bit 15
D8106
D8106
2-bit Binary Value
00
01
10
11
5-34
I
NSTRUCTIONS
While the FC6A Series MicroSmart is running, DTR is on whether the FC6A Series MicroSmart is transmitting or
receiving data. While the FC6A Series MicroSmart is stopped, DTR remains off. Use this option to indicate the FC6A
Series MicroSmart operating status.
FC6A Series MicroSmart
ON
DTR signal
OFF
Whether the FC6A Series MicroSmart is running or stopped, DTR remains off.
FC6A Series MicroSmart
ON
DTR signal
OFF
While the FC6A Series MicroSmart can receive data, DTR is turned on. While the FC6A Series MicroSmart can not
receive data, DTR remains off. Use this option when flow control of receive data is required.
Receive
ON
DTR signal
OFF
Same as D8106 = 00.
FC6A S M S A
ERIES ICRO MART
5 4 3 2 1 0
0 0 0 0 0 0
Port 3 Port 2 Port 1
Description
Stopped
Stopped
Impossible
- -O T C
LL IN NE YPE OMMUNICATION
Running Stopped
Running Stopped
Possible Impossible
M FC9Y-B1730
ANUAL