Western Reserve Controls 1782-JDO Uživatelský manuál stáhnout pdf (Strana 26)

Western Reserve Controls WRC-CANR-DF-DN and –SM User’s Manual

PUB 14.2 Revision 4.03

• Additional diagnostics:

o A “heartbeat” feature has been added to the fiber link on Series III and IV WRC-

CANR-DF-DN units. A heartbeat message is generated between the 2 CANR

units when no CAN activity is present for approximately 0.5 sec, allowing each

unit to confirm the status of the link.

o The NSB LED indicates the health of the fiber connection for both normal traffic

and the heartbeat.

8.5. 12km Single-mode Fiber Link and Diagnostics (WRC-

CANR-DF-SM)

The WRC-CANR-DF-SM Series IV can be used with single-mode fiber optic cable and has the

following fiber serial link characteristics:

• Extends your applications for up to 12km at any CAN baud rate.

o This significantly increases opportunities for applications requiring longer range

network extension than can be accomplished using single mode fiber.

• Additional diagnostics:

o As with the mulitmode fiber, a “heartbeat” feature has been added to the fiber link

on WRC-CANR-DF-SM Series IV units. A heartbeat message is generated

between the 2 CANR units when no CAN activity is present for approximately 0.5

sec, allowing each unit to confirm the status of the link.

o The NSB LED indicates the health of the fiber connection for both normal traffic

and the heartbeat.

8.6. Enhanced CAN Support

The CANR now supports CAN 2.0 Part B, as well as Part A. It also can operate up to 1M Baud

and with CANopen baud rates. (See factory for details.)

8.7. Field Programmable Updates

The CANR Series III and IV units have their programs held in flash memory, which can be

updated in the field. Contact the factory for details.

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Western Reserve Controls 1782-JDO Uživatelský manuál Strana 26