D-RFID-PR3 - v1.04 / 2012-09-21
Strana 1 z 2
D-RFID-PR3 Manual
1.
Introduction
D-RFID-PR3
(
PR3
for short) is external RF receiver module for PLC FATEK. PR3
receives codes from 433 MHz transmitters (
in system SEA D-RFID
) and sends
them to RS485 serial channel (9600 Baud, 7 bits, even parity, 1 stop bit) in protocol
FATEK.
Main Features
External RF receiver module for PLC FATEK
RF Data coding -
system SEA D-RFID
Operates in free 433 MHz band
Serial communication: RS485 – FATEK protocol
2.
Package
1 pc
PR3
(order code D-RFID-PR3)
Warning
Transmitter
D-RFID
and
PLC FATEK
are not part of
PR3
package and
has to be ordered separately.
PR3
can be connected to any PLC FATEK,
which is equipped with RS 485 communication port (e.g. FAC-FBS-CB5).
PR3
accepts only RF signals transmitted in system SEA D-RFID (e.g.
D-RFID
which can
transmit codes for 2 year on internal battery).
3.
Typical application
4.
Installation
1.
Connect PR3 to PLC and switch on the power supply. All LEDs on PR3 are
dark. (In case the red LED lights, check the PLC serial port 3 setting
(9600Bd, even parity, 1 stop bit), if it does not help, try to exchange A and
B RS485 wires).
2.
Locate the D-RFID transmitter near PR3. The green LED RF diode on PR3
starts to blink once per 10 sec.
3.
Test the simple PLC program using WinProladder. (see the simple example
at the end of this document)
5.
Technical specification
Parameter
Symbol
Conditions
MIN.
TYP
MAX
Unit
Dimensions
Width
W
w/o cables
70
mm
Height
H
70
mm
Depth
D
27
mm
Supply
Voltage DC
V
CC
(typically
car battery)
8
12
30
V
DC
Current
I
CC
V
CC
= 12V
mA
Output
RS 485
Number
-
1
-
Protocol FATEK
http://fatek.esea.cz
Temperature
Operational
t
A
-20
+55
°C
Rel. humidity
Operational
h
A
90
%
6.
Hardware
6.1
Indicators (LED diodes), Attenuator
6.2
Connector
7.
Control
7.1
Common operation
Whenever any valid data packet is received the
green RF LED
shortly blinks and
M1801 register in connected PLC is set.
7.2
Received signal gain setting
Turn the red rod on attenuator until the requested gain of PR3 is reached.
8.
Communication protocol
8.1
Common operation
PR3
sends data (using FATEK protocol) to RS 485 serial line with information
concerning received data from D-RFID transmitters. Serial line setting is this:
9600 Baud, 7 bits, even parity, 1 Stop bit.
Example of debug data:
<#02>014708R030005052010800000000000D000000000037AE<#03><#0D>
Example of data concerning D-RFID transmitters:
<#02>014904M18011DR03008443932C1DR0301000002C9DDR03012000000A518<
#03><#0D>
Name
LED diode
Description
RF
LED green
Lights whenever valid RF data
packet is received.
ERR
LED red
Lights whenever any problem in
communication with PLC appears
DBG
LED red
For debug purposes only
ATT
Attenuator
RF signal gain setting
-
Pushbutton
Not used
Pin
Description
1
+
Supply: +8 to +30 V
DC
2
A
RS 485: A (Data +)
3
B
RS 485: B (Data -)
3
GND
Ground: (Supply and RS 485)
+8 to +30 V
DC
RS 485: A
RS 485: B
GND
Attenuator
Min gain
Max gain
LED ERR
LED RF
