Evco EPH4DXP1SA Manual do Utilizador descarregar pdf (Página 11)

EVCO S.p.A. c-pro 3 hecto MCSA | User manual ver. 2.0 | Code 144MCSAE204

page 11 of 52

- connect the termination of the CAN port (120 Ω, 0.5 W); position micro switch 1 in the ON position in order to connect the

CAN port termination (connect the termination of the first and last network element termination).

Note: switches n° 1, 2 and 3 are not used in this application

CAN BUS

CAN port.

Clamp Meaning

CAN + + signal

CAN - - signal

GND earth

The maximum number of devices that can make up the CAN network (32) depends on the bus load; the bus load

depends on the CANbus communication baud rate and the type of device in the network.

For example: a CAN network can be made up from a programmable controller, four I/O expansions and four user terminals

with 500,000 baud rate.

The maximum length of the CAN port connection cables depends on the CANbus communication baud rate, as follows:

- 1,000 m (3,280 ft) with baud rate of 20,000 baud

- 500 m (49,987.20 cm) with baud rate of 50,000 baud

- 250 m (24,993.60 cm) with baud rate of 125,000 baud

- 50 m (164 ft) with baud rate of 500,000 baud.

Connect the CAN port using a twisted pair cable.

For the settings relative to the CAN port, see chapter 6 “CONFIGURATION”.

DIGITAL OUTPUTS

Digital outputs 1, 2, 3, 4 and 5 (electro-mechanical relays).

Clamp Meaning

CO1/2 common digital outputs 1 and 2

NO1 digital output 1 normally open contact

NO2 digital output 2 normally open contact

NO3 digital output 3 normally open contact

CO3/4/5 common digital output 3/4/5

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Evco EPH4DXP1SA Manual do Utilizador Página 11