Sample Program - User Communication Txd - IDEC FT1A Series User Manual

10: U C
SER OMMUNICATION
Sample Program – User Communication TXD
This example demonstrates a program to send data to a printer using the user communication TXD2 (transmit) instruction, with the
optional RS232C communication cartridge installed on the port 2 connector of the 24-I/O type SmartAXIS.
System Setup
M i i n D I N C o n n e c o t r
Description
Shield
NC No Connection
NC No Connection
TXD Transmit Data
NC No Connection
DSR Data Set Ready
NC No Connection
SG Signal Ground
NC No Connection
The name of BUSY terminal differs depending on printers, such as DTR. The function of this terminal is to send a signal to remote
equipment whether the printer is ready to print data or not. Since the operation of this signal may differ depending on printers,
confirm the operation before connecting the cable.
•
Caution
Description of Operation
The data of counter C2 and data register D30 are printed every minute. A printout
example is shown on the right.
Programming Special Data Register
Special data register D8105 is used to monitor the BUSY signal and to control the
transmission of print data.
Special DR Value
3
D8105
(011)
The SmartAXIS monitors the DSR signal to prevent the receive buffer of the printer from overflowing. For the DSR signal, see "DSR
Input Control Signal Option D8105" on page 10-12.
10-24
I
NSTRUCTIONS
RS232C Communication
Cartridge
FT1A-KP1C
To Port 2 (RS232C)
P n i o u s t
Color Pin
— Cover
Black 1
Yellow 2
Blue 3
Green 4
Brown 5
Gray 6
Red 7
White 8
Do not connect any wiring to the NC (no connection) pins; otherwise, the SmartAXIS and the printer may not work
correctly and may be damaged.
While DSR is on (not busy), the SmartAXIS sends data.
While DSR is off (busy), the SmartAXIS stops data transmission.
If the off duration exceeds a limit (approx. 5 sec), a transmission busy
timeout error will occur, and the remaining data is not sent. The
transmit status data register stores an error code 2.
S AXIS P
MART
User Communication Cable 1C
FC2A-KP1C
2.4m (7.87 ft.) long
Attach a proper connector to the open
end of the cable referring to the cable
connector pinouts shown below.
Cable Connection and Pinouts
Description
/L U ' M FT9Y-B1378
RO ITE SER S ANUAL
To RS232C Port
D s - u b 9 - p n i C o n n e c o t r
Pin Description
1 NC No Connection
2 NC No Connection
3 DATA Receive Data
4 NC No Connection
5 GND Ground
6 NC No Connection
7 NC No Connection
8 BUSY Busy Signal
9 NC No Connection
Printout Example
--- PRINT TEST ---
11H 00M
CNT2...0050
D030...3854
--- PRINT TEST ---
11H 01M
CNT2...0110
D030...2124
Printer
P n i o u s t