EVCO EPD4DF3 Installer manual - Manual (Page 49)

EVCO S.p.A. EVDRIVE03 | User manual ver. 3.4 | Code 144EPDE344
page 49 of 70
8 SERIAL COMMUNICATION
8.1 Preliminary information
It is possible to control the EVDRIVE03 driver by connecting it to a controller.
The controller sends information to the driver necessary for its correct functioning, and the driver responds with its
internal states, such as (for example) the pressure and temperature measurements, alarms, certain parameters, etc.
The connection methods available on the EVDRIVE03 are CANBUS, MODBUS RS-485, and MODBUS on the setting and
programming port, according to the model.
The protocol to be used for communication with the controller must be selected via parameter Enabling mode (Pr06).
8.2 CANBUS serial communication
The EVCO controllers primarily use a protocol based on CANBUS for communication with controllable systems.
The exchange of data is based on a list of variables or parameters that the controller may send to the driver, and a list
of variables the driver sends to the controller to provide its state data.
8.3 MODBUS serial communication
Serial communication via the programming and RS-485 port may use the MODBUS protocol. The accessible variables
and parameters are those shown in the tables in the section “Configuration”. These same tables also include MODBUS
addresses (base 1).
The same rules covered earlier for the communication alarm management also apply to the valve Enable valve
command (EnaV) (see “Communication error”).
The port configuration can be performed using dedicated configuration pages on the LCD display (for the built-in
versions) or Vgraph (for the blind versions used with a remote user interface).
The default setting for each MODBUS communication port is 9600 bps, even parity, 1 stop bit.