Instruction Manual

System bus (CAN) for Lenze PLC devices
General information
2−5
l
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)
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)