Delta DVP-ES2 User Manual download pdf (Page 660)

100

101

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming

7-4

7.2.2 The Profile

7.2.3 The CAN Interface and the Network Topology

¾ The pins of COM3 (CAN interface)

Pin Description

CAN+ CAN-H

CAN- CAN-L

Signal

ground

White (CAN_H)

Blue (CAN_L)

D+

D-

CAN+

CAN-

Black(SG)

¾ The CAN signal and the data frame format

The CAN signal is a differential signal. The voltage of the signal is the voltage difference between

CAN+ and CAN-. The voltage of CAN+ and that of CAN- take SG as a reference point. The CAN

network can be in two states. One is a dominant level, and is indicated by the logical “0”. The other

is a recessive level, and is indicated by the logical “1”. The CAN signal level is shown below.

The data frame format is shown below. The CAN nodes transmit the CAN messages to the network

from left to right, as the data frame format below shows.

DominantRecessive

Tighten it with a slotted

screwdriver.

1 2 ... 655 656 657 658 659 660 661 662 663 664 665 ... 701 702

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Delta DVP-ES2 User Manual Page 660

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