
UK
CabinetModule CR2014
17
Terms and abbreviations
10
0b ���
binary value (for bit coding), e�g� 0b0001 0000
0d ���
decimal value, e�g� 0d100
0x ���
hexadecimal value, e�g� 0x64 (= 100 decimal)
Baud rate
transmission speed (1 baud = 1 bit/s)
CAL
CAN application layer
CAN-based network protocol on application level
CAN
controller area network (bus system for the use in mobile vehicles)
CAN_H
CAN high; CAN connection/cable with high voltage level
CAN_L
CAN low; CAN connection/cable with low voltage level
CANopen
CAN-based network protocol on application level with an open configuration interface
(object directory)�
CiA
“CAN in Automation e�V�”(user and manufacturer organisation in Germany/Erlangen)
definition and control body for CAN and CAN-based network protocols
CiA DS
draft standard (published CiA specification which usually has not been modified or
supplemented for one year)
CiA DSP
draft standard proposal (published CiA specification draft)
CiA WD
work draft (work draft accepted for discussion within CiA)
CiA DS 301
specification for CANopen communication profile;describes the basic communication
between network participants such as the transfer of process data in real time, the
exchange of data between devices or the configuration stage
supplemented by the following CiA specifications depending on the application:
CiA DS 401
device profile for digital and analogue I/O modules
CiA DS 402
device profile for drives
CiA DS 403
device profile for HMI
CiA DS 404
device profile for measurement and control technology
CiA DS 405
specification for interfaces to programmable systems (IEC 61131-3)
CiA DS 406
device profile for encoders
CiA DS 407
application profile for local public transport
COB
CANopen communication object (PDO, SDO, EMCY, ���)
COB-ID
CANopen identifier of a communication object
Communication cycle the synchronisation time to be monitored; max� time between 2 synch objects
EMCY object
emergency object (alarm message; device indicates an error)
Error Reg
error register (entry with an error code)
Guarding Error
node or network participant could or can no longer be found
guard MASTER: one or several SLAVES no longer reply
guard SLAVE: no polling of the device (SLAVE)
Guard Time
during this time the network participant expects a “node guarding” of the network
master
Heartbeat
cyclic monitoring with parameter setting among network participants
In contrast to “node guarding” no superior NMT master is required�
ID (also identifier)
identifier; identifies a CAN message; the numerical value of the ID also contains a
priority for the access to the bus systemID 0 = top priority�
Idx
index; together with the subindex it forms the address of an entry in the object
directory
Life Time Factor
number of attempts in case of a missing guarding reply
Monitoring
is used to describe the error class (guarding monitoring, synch etc�)
NMT
network management
NMT master/slaves
the NMT master controls the operating states of the NMT slaves
Node Guarding
adjustable cyclical monitoring of slave network participants by a higher master node
as well as monitoring of this polling process by the slave participants
Node ID
node identifier (identification of a participant in the CANopen network)
Object (also OBJ)
term for data/messages which can be exchanged in the CANopen network
Object directory
contains all CANopen communication parameters of a device as well as device-
specific parameters and data;
access to the individual entries is possible via the index and subindex