Instruction Manual
Table Of Contents
- System bus (CAN) for Lenze PLC devices
- This documentation is valid for ...
- Contents
- 1 Preface and general information
- 2 General information on the system bus (CAN)
- 2.1 Introduction
- 2.2 Interfaces of the Lenze PLCs for system bus connection
- 2.3 Identification of the nodes
- 2.4 Structure of the CAN telegram
- 2.5 Network management (NMT)
- 2.6 Transmission of process data
- 2.7 Transmitting parameter data
- 2.8 Free CAN objects
- 2.9 Application recommendations for the different CAN objects
- 2.10 Monitoring mechanisms
- 3 Configuration (system bus - CAN interface)
- 3.1 CAN baud rate
- 3.2 CAN boot-up
- 3.3 Node address (node ID)
- 3.4 Identifiers of the process data objects
- 3.5 Cycle time (CAN2_OUT/CAN3_OUT)
- 3.6 Delay time (CAN2_OUT/CAN3_OUT)
- 3.7 Synchronisation
- 3.8 Reset node
- 3.9 System bus management
- 3.10 Mapping indexes to codes
- 3.11 Remote parameterisation (gateway function)
- 3.12 Monitoring processes
- 3.13 Diagnostics
- 4 Configuration (AIF interface)
- 5 Configuration (FIF interface)
- 6 Configuration (CAN-AUX system bus interface)
- 7 CAN system blocks
- 8 FIF-CAN system blocks (only Drive PLC)
- 9 CAN-AUX system blocks (only ECSxA)
- 10 LenzeCanDrv.lib function library
- 10.1 Overview
- 10.2 Version identifiers of the function library
- 10.3 L_CanInit - initialising the CAN driver
- 10.4 L_CanClose - deactivating the CAN driver
- 10.5 L_CanGetStatus - querying the driver status
- 10.6 L_CanGetRelocCobId - querying the COB-ID range
- 10.7 L_CanPdoTransmit - transmitting a CAN object
- 10.8 L_CanPdoReceive - receiving a CAN object
- 11 LenzeCanDSxDrv.libfunction library
- 11.1 Overview
- 11.2 Version identifiers of the function library
- 11.3 L_CanDSxInitIndexCode - Configuration of index mapping
- 11.4 L_CanDSxOpen - initialising the CanDSx driver
- 11.5 L_CanDSxClose - deactivating the index mapping
- 11.6 L_CanDSxOpenHeartBeat - initialising a "Heartbeat"
- 11.7 L_CanDSxHeartBeat - carrying out a "Heartbeat"
- 11.8 L_CanDSxCloseHeartBeat - deactivating the "Heartbeat"
- 11.9 L_CanDSxOpenNodeGuarding - initialising the "Node Guarding"
- 11.10 L_CanDSxNodeGuarding - carrying out a "Node guarding"
- 11.11 L_CanDSxCloseNodeGuarding - deactivating the "Node Guarding"
- 12 Index
11.7 L_CanDSxHeartBeat − carrying out a "Heartbeat"
System bus (CAN) for Lenze PLC devices
LenzeCanDSxDrv.lib function library
11−8
L
PLC−Systembus EN 2.0
11.7 L_CanDSxHeartBeat − carrying out a "Heartbeat"
Function block
Use this FB to cyclically monitor the CAN connection between the PLC and other system bus nodes
by means of the so−called "Heartbeat" mechanism.
· Here the FB assumes the function of the "heartbeat consumer" and therefore has to be called
up on the monitoring PLC.
· The "Heartbeat" monitoring mechanism first has to be initialised in the CanDSx driver using
the function L_CanDSxOpenHeartBeat.
(^ 11−7)
L_CanDSxHeartBeat
tHeartBeatConsumerTime
wDrvNr
byNodeAddr
bRun
CTRL
nState
Heartbeat producer
(Node address = )byNodeAddr
System bus
(CAN)
©©©
FB call in: o Cyclic task
(PLC_PRG)
Þ Time−controlled task
(INTERVAL)
o Event−controlled
task (EVENT)
o Interrupt task
Inputs Data type Information/possible settings
wDrv Word Driver number for the CAN interface of the PLC that is to be used
10 On board system bus (CAN)
byNodeAddr Byte Node address of the node to be monitored.
1...128 Node address
bRun Bool Activate "Heartbeat" monitoring.
TRUE Monitoring is activated.
· The FB now continuously monitors whether the node with the node address
byNodeAddr sends its "Heartbeat" message within the set monitoring time
tHeartBeatConsumerTime via the system bus and outputs a corresponding
status at output nState.
tHeartBeat
ConsumerTime
Time Monitoring time within which the "Heartbeat" message has to arrive from the node to be
monitored, so that no "Heartbeat" event (nState = −10) is actuated.
· Adjust this time in accordance with the "heartbeat producer time", by which the node to be
monitored sends the "Heartbeat" message.
· Recommended setting: 200 ... 2000 ms
· Maximum setting: 65535 ms