IDEC FC6A-C16K1CE - Sample Program - User Communication RXD

FC6A S ERIES M ICRO S MART A LL - IN -O NE T YPE C OMMUNICATION M ANUAL FC9Y-B1730 5-47
5: U SER C OMMUNICATION I NSTRUCTIONS
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
RXD1 (receive) instruction.
System Setup
Description of Operation
A barcode reader is used to scan barcodes of 8 numerical digits. The scanned data is sent to the FC6A Series MicroSmart through
the Serial Port 1 (RS232C) 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 Serial Port 1 (RS232C), select User Protocol for Port 1 in the Function Area Settings using WindLDR.
See "Programming WindLDR" on page 5-25.
Setting Communication Parameters
Set the communication parameters to match those of the barcode reader. See "Programming WindLDR" on page 5-25. For details
of the communication parameters of the barcode reader, see the user’s manual for the barcode reader. An example is shown
below:
To RS232C Port
To Serial Port 1 (RS232C)
Attach a proper connector to the open
end of the cable referring to the cable
connector pinouts shown below.
Communication Cable
(part no: FC6A-KC1C)
5 m (16.4 ft.)
Serial Port 1
Barcode Reader
FC6A Series MicroSmart
RJ45 Connector D-sub 25-pin Connector Pinouts
Pin Description
1 FG Frame Ground
2 TXD1 Transmit Data
3 RXD1 Receive Data
7 GND Ground
Description Pin
Color
Shield — Cover
RXD Receive Data White/Orange 1
TXD Transmit Data Orange 2
DTR Equipment Ready White/Green 3
A Blue 4
B White/Blue 5
DSR Data Set Ready Green 6
NC No Connection White/Brown 7
SG Signal Ground Brown 8
Do not connect any wiring to the NC (no connection) pins; otherwise, the FC6A Series MicroSmart and the barcode reader
may not work correctly and may be damaged.
Caution
Communication Parameters:
Baud rate: 9,600 bps
Data bits: 7
Parity check: Even
Stop bits: 1