U:\Hovedbibliotek\Produkter\Standard\Uniflo 1200\2. Kundemappe UK\8_Option
Board_Communication\8.1_communicatiom_controller\Communication_board_230210.doc
Page 11 of 15
Communication_board_230210.doc
4.1 Set up
Uniflo with modem
Set up as described for "Communication board connected directly to GSM modem" or "Communication
board connected directly to PSTN modem" type. This will be the Modbus MASTER.
Uniflo's without modem
Set up as described for "Communication board connected via bus to GSM modem" or "Communication
board connected via bus to PSTN modem" type, this will be the Modbus SLAVE's.
When connecting Uniflo's together on a Bus it's important that all units have different "Modbus SLAVE
address". Typical the Master is given the "Modbus SLAVE address" "1-10", the first SLAVE is given the
"Modbus SLAVE address" "11-20", the second SLAVE is given the "Modbus SLAVE address" "21-30" and so
on.
"Modbus SLAVE address" is set under the "Miscellaneous" tab.
Notice:
Modbus SLAVE address" may only be changed when using optical head or Uniwire
, not by
modem
It's recommended that the MASTER is first connected, set up and tested. Hereafter connect, set up and test
one SLAVE unit at the time.
4.2 Cables
Communication board to GSM/PSTN cable:
The communication board and the GSM/PSTN modem must be connected with a cable that transfers both
power supply and communication.
The following signals are transferred:
•
+5V
•
2*GND
•
TxD
•
RxD
The cable is of type LIYY 5x0,34mm
2
and it's always mounted on the GSM/PSTN modem.
Communication board to GSM/PSTN modem connections:
Pin Communication board
GSM/PSTN modem Pin
1 TxD – green
GND – white
6
2 RxD – brown
RXIN – green
5
3 Com – white
TXOUT – brown
4
4 GND – gray
GND – gray
3
5 +5V - yellow
+5V BA/+5V MO - yellow 1/2
On the GSM/PSTN modem the yellow wire can be placed in two different positions:
1) GSM/PSTN modem mounted with Backup board use position 1 (+5V BA)
2) GSM/PSTN modem without Backup board use position 2 (+5V MO)
