INSTRUCTION
i
Read this instruction before installation
of the product
RCW-M
1
Number Description
Number Description
1
Communication/Test
button
5
RS485 terminal
2
LED lights
6
Power terminal
3
DIP switch set 2
7
RS485 terminal resistor (jumper)
4
DIP switch set 1
8
Service connection
Commissioning
This product must be connected to a separate transformer to
prevent damage to the communication port.
Connect the reciever to 24 V AC
supply voltage. LED 5 and 6 will light up
when the receiver is powered on.
Connect to Modbus master controller
Connect the receiver to the master controller via the RS485 terminal.
The receiver will be in
Connected
status as default when powered on,
which means that it will forward signals received from sensors to the
controller. LED 5 will turn on with a steady light.
Disconnect the Modbus receiver
To disconnect the receiver, press and hold the
Test button
for approx.
3 seconds. Release the button when you hear 2 beeps. LED 5 will start
flashing to indicate that the receiver is disconnected.
To connect the receiver again, press and hold the
Test button
for approx.
1 second. There will be 1 beep and LED 5 will stop blinking and light up
with a steady light to indicate that it is connected.
Configuration
The receiver has two sets of DIP-switches for configuration.
Set 1: RS-485 Parity and Baud rate setting
Function
Switch 1
Switch 2
Value
Parity
OFF
OFF
None*
ON
OFF
Even*
OFF
ON
None*
ON
ON
Odd*
* 1 or 2 stop bits
Wireless receiver with Modbus communication
The Modbus receiver can pair with up to 16 digital or analogue sen-
sors. It monitors the sensors and reports the information to the user
via Modbus communication.
1
2
3
4
5
6
7
LED 1
LED 2
LED 3
LED 4
LED 5
LED 6
8
N -A +B
G
G0
RCW-M
12808F
MA
Y 17
EN
Function
Switch 3
Switch 4
Value
Baud rate
OFF
OFF
9600
ON
OFF
19200
OFF
ON
38400
ON
ON
38400
Set 2: For Modbus address setting
DIP-
switch
Bit
Position
1
Bit0
ON
2
Bit1
ON
3
Bit2
ON
4
Bit3
ON
5
Bit4
ON
6
Bit5
ON
7
Bit6
ON
8
Bit7
ON
If all DIP-switches are OFF, the address is 1.
Examples:
•
If DIP-switch 1,3 and 5 is ON, the Modbus address will be
00010101 = 21
•
If DIP-switch 2 and 4 is ON, the Modbus address will be
00001010 = 10
Programming mode on the receiver
To be able to pair sensors with the receiver, the receiver must be in
Programming
mode.
To enter
Programming
mode: press and hold the
Test button
on the
receiver until you hear 1 short beep (approx. 1 second). This indicates
that the receiver has entered
Programming
mode. LED 6 will start
flashing.
To exit
Programming
mode
,
press and hold the
Test button
for approx.
1 second. LED 6 will light up with a steady light.
The receiver will exit
Programming
mode automatically if it is idle for
6 minutes.