Lenze DDS System bus CAN for PLC Uživatelský manuál stáhnout pdf (Strana 19)

System bus (CAN) for Lenze PLC devices

General information

2−7

PLC−Systembus EN 2.0

2.6 Transmission of process data

Process data are data for control−oriented concerns, e. g. setpoints and actual values.

· Process data are transferred as so−called PDOs (Process Data Objects) with a high priority via

the system bus.

· Transmitting and receiving the process data is effected by the use of specific system blocks:

CAN

(integrated)

XCAN

(AIF interface)

FIF−CAN

(FIF interface)

For Drive PLC only!

CANaux

For ECSxA only!

Information

CAN1_IO AIF1_IO_AutomationInterface FIF_CAN1_IO CANaux1_IO Cyclic process data (sync−controlled)

CAN2_IO AIF2_IO_AutomationInterface FIF_CAN2_IO CANaux2_IO Event− or time−controlled process data

CAN3_IO AIF3_IO_AutomationInterface FIF_CAN3_IO CANaux3_IO Event− or time−controlled process data

Tip!

In the following subchapters you’ll receive further information on the CAN1_IO ... CAN3_IO process

data objects of the CAN interface. This information also applies to the process data objects of the

AIF−, FIF− and CAN−AUX interface!

2.6.1 Process data channels

Process data channel 1: CAN1_IO

The CAN1_IO SB can be used for the data exchange of cyclic process data (e. g. setpoints and

actual values) with a higher−level host system.

cyclic process data (sync−controlled)

process data channel 1

CAN1_IN

CAN1_OUT

Host

Fig. 2−2 Process data channel 1 (CAN1_IO) for the cyclic data exchange

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 177 178

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Lenze DDS System bus CAN for PLC Uživatelský manuál Strana 19