Delta DVP-ES2/EX2/SS2/SA2/SX2/SE CAN+ CAN-H Can CAN-L, ¾ The can signal and the data frame format

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

7.2.2 The Profile

7.2.3 The CAN Interface and the Network Topology

¾The pins of COM3 (CAN interface)

Pin	Description
CAN+	CAN-H
CAN-	CAN-L
SG	Signal
	ground

White (CAN_ H) Blue (CAN_ L)

Black(SG)

CAN+

CAN-

SG

D+

D-

Tighten it with a slotted screwdriver.

¾The 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.

RecessiveDominant

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.

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