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

10: U C
SER OMMUNICATION
Sample Program – User Communication RXD
This example demonstrates a program to receive data from a barcode reader with an RS232C port using the user communication
RXD2 (receive) instruction.
System Setup
Mini DIN Connector Pinouts
Description
Shield
NC No Connection
NC No Connection
TXD Transmit Data
RXD Receive Data
NC No Connection
NC No Connection
SG Signal Ground
NC No Connection
•
Caution
Description of Operation
A barcode reader is used to scan barcodes of 8 numerical digits. The scanned data is sent to the SmartAXIS through the RS232C
port 2 and stored to data registers. The upper 8 digits of the data are stored to data register D20 and the lower 8 digits are stored
to data register D21.
Setting User Communication Mode in WindLDR Function Area Settings
Since this example uses the RS232C port 2, select User Protocol for Port 2 in the Function Area Settings using WindLDR. See
"Programming WindLDR" on page 10-4.
Setting Communication Parameters
Set the communication parameters to match those of the barcode reader. See "Programming WindLDR" on page 10-4. For details
of the communication parameters of the barcode reader, see the user's manual for the barcode reader. An example is shown
below:
Communication Parameters:
Baud rate: 9600bps
Data bits: 7
Parity check: Even
Stop bits: 1
10-26
I
NSTRUCTIONS
RS232C Communication
Cartridge
FT1A-KP1C
To Port 2 (RS232C)
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 barcode reader may not
work correctly and may be damaged.
S AXIS P
MART
User Communication Cable
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.
/L U ' M FT9Y-B1378
RO ITE SER S ANUAL
Barcode Reader
To RS232C Port
IDEC DATALOGIC
D-sub 25-pin Connector Pinouts
Pin Description
1 FG Frame Ground
2 TXD1 Transmit Data
3 RXD1 Receive Data
7 GND Ground
DS4600A