Lenze DDS System bus CAN for PLC Manual do Utilizador descarregar pdf (Página 17)

System bus (CAN) for Lenze PLC devices

General information

2−5

PLC−Systembus EN 2.0

2.4.2 User data

Via the user data area of the CAN telegram, three different types of data are transported:

Data type Information

Network management data Information on the structure of communication via the CAN network. Chapter 2.5(^ 2−6)

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

values.

· Process data are transmitted as so−called PDOs (Process Data Objects) with a

high priority.

· Process data are processed more quickly by the PLC as parameter data.

· The transmission and reception of the process data is effected by the use of

specific system blocks or the free CAN objects:

Chapter 2.6(^ 2−7)

CAN

(integrated

system bus interface)

SB CAN1_IO for cyclic process data (sync−controlled)

9300 Servo PLC:

Drive PLC:

ECSxA:

Chapter 7.1(^ 7−1)

Chapter 7.2(^ 7−6)

SB CAN2_IO for event− or time−controlled process data Chapter 7.4(^ 7−14)

SB CAN3_IO for event− or time−controlled process data Chapter 7.5(^ 7−17)

XCAN

(automation interface)

SB AIF1_IO_AutomationInterface

for cyclic process data (sync−controlled)

See Manual

· 9300 Servo PLC

· Drive PLC

· ECSxA

SB AIF2_IO_AutomationInterface

for event− or time−controlled process data

SB AIF3_IO_AutomationInterface

for event− or time−controlled process data

FIF−CAN

(function interface,

Drive PLC only!

SB FIF_CAN1_IO for cyclic process data (sync−controlled) Chapter 8.1(^ 8−1)

SB FIF_CAN2_IO for event− or time−controlled process data Chapter 8.2(^ 8−1)

SB FIF_CAN3_IO for event− or time−controlled process data Chapter 8.3(^ 8−1)

CAN−AUX

(integrated

system bus interface,

ECSxA only)

SB CANaux1_IO for cyclic process data (sync−controlled) Chapter 9.1(^ 9−1)

SB CANaux2_IO for event− or time−controlled process data Chapter 9.2(^ 9−1)

SB CANaux3_IO for event− or time−controlled process data Chapter 9.3(^ 9−1)

Free CAN objects By using the functions/function blocks of the LenzeCanDrv.lib function

library, so−called "free CAN objects" additionally can be added to the

fixedly integrated CAN objects.

Chapter 10(^ 10−1)

Parameter data For Lenze devices, parameter data are the so−called codes.

· Parameter settings for instance are carried out in the case of a one−time

setting of the system during commissioning, or in the case of a material

change of the production machine.

· Parameter data are transferred as so−called SDOs (Service Data Objects) via

the CAN network and are acknowledged by the receiver, i. e. the transmitter

receives a feedback on whether the transmission was successful.

Chapter 2.7(^ 2−11)

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