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4.3. PHASE 2 - HMI-BHP/VMF-485LINK Recognition
Having correctly wired the components and set the dip switches SW1, the sequence of operations to be
performed to start the recognition of the FCWI unit to the VMF-485LINK accessory is as follows:
1. Power the HMI/BHP unit;
2. Supply voltage to the expansion VMF-RS485LINK;
3. Keep the T1 button of the VMF-RS485LINK expansion pressed until the DL6 (red) and DL5 (white)
LEDs flash simultaneously;
4. Wait for the end of the recognition procedure of the HMI / BHP units' control card. During this phase,
the VMF-RS485LINK expansion sends read commands to the slave device connected to it, if a cor-
rect response follows the read command, the recognition procedure of the unit ends, otherwise, it
continues with the sending of other read commands in which the modbus address associated with
the node is increased;
5. If the unit recognition procedure is completed correctly, the expansion will start continuously send-
ing/receiving modbus commands; this normal operating condition will be indicated by the expan-
sion with the red LED DL6 off and the white LED DL5 flashing.If we are in this condition, the VMF-RS-
485LINK gateway is ready to be connected, through the slave port (M3), to a supervision system such
as the VMF-E5 and VMF-E6 panel.If the VMF-RS485LINK expansion fails to establish a serial commu-
nication with the unit, it automatically goes into an error condition (failed communication with the
slave device) which will be indicated by the flashing of the red DL6 LED only.
Funzioni (4/4)
Indirizzo: 1
Recupero Refriger: Off
Res. El. Serbatoio: Logica 1
Contatto Memoria: Off
(5) From the “Functions 4/4” page, select the
“Address” function:
Indirizzo
Range: 1~153 Default: 1
+
-
1
OK Cancella
(6) Set the desired value and confirm by press-
ing the "OK" key:
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