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Chapter 6: can communications, 1 overview, 2 port description – Horner APG XL7 OCS User Manual

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XL7 User Manual

CHAPTER 6: CAN COMMUNICATIONS

Note: For additional CAN information, refer to the CAN Networks manual (MAN0799) on the Horner

websites.

6.1

Overview

All XL7 OCS models provide two CAN network ports, which are implemented with 5-pin connectors.

The connectors are labeled CAN1 and CAN2.

Figure 6.1 – CAN1 & CAN2 Connector Locations

Like the MJ1 serial port, the CAN1 port can be used for XL7 OCS programming by connecting it to the

CAN port of a PC running Cscape. The CAN1 port also allows the XL7 OCS to exchange global data with

other OCS/RCS controllers. Both CAN1 and CAN2 support accessing of remote network I/O devices

(SmartStix, SmartBlock and SmartRail Modules.)

CAN2 port supports CsCAN, CANopen, J1939 and DeviceNet Master (layer 3 as a selectable option – one

only)

6.2

Port Description

The XL7 OCS CAN ports implement the ISO 11898-2 physical layer and the CAN 2.0A data link layer

standards. Also, since the CAN ports are powered by an internal isolated power supply, external CAN

power is not required.

6.3

CAN Port Wiring

Figure 6.2 – CAN1 / CAN2 Port Pins

CAN1 & CAN2 Port Pins

Pin

Signal

Signal Description

Direction

1

V-

CAN and Device Ground -

Black

2

CN_L

CAN Data Low - Blue

In/Out

3

SHLD

Shield Ground - None

4

CN_H

CAN Data High - White

In/Out

5

V+

Positive DC Voltage Input

(10-30VDC) - Red

CAN Connector

Use the CAN Connector when

using CsCAN or other CAN

network.

Torque rating 4.5 – 7 Lb-In

(0.50 – 0.78 N-m)

CAN1

CAN2

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