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5 canopen function, 1 overview of communication functions, Communication profile – JUMO 902910 CANtrans T RTD Temperature Probe with CANopen Output Operating Instructions User Manual

Page 14: Objects, Canopen function, Overview of communication functions

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5 CANopen function

5.1

Overview of communication functions

Communica-
tion profile

The CAN interface communication functions correspond to the CANopen
communication profile DS-301.

Objects

Data exchange with CANopen devices takes place in the form of objects.
The table below contains the supported objects; these will be explained in the
sections that follow.

Object

CAN identifier

Function

Note

NMT

0

network management

bus master is the sender

SYNC

0x80

PDO synchronization

bus master is the sender

EMERGENCY

0x80 + node ID

alarm message

TPDO 1

0x180 + node ID

measurement 1 and
status

identifier changeable
via object dictionary
0x1800,1

TPDO 5

inactive

measurement 2 and
status

identifier changeable via
object dictionary
0x1804,1
only with twin probe

SDO (tx)

0x580 + node ID

access to parameters
(object dictionary)

slave (CANtrans) to
master

SDO (rx)

0x600 + node ID

access to parameters
(object dictionary)

master to
slave (CANtrans)

Heartbeat

0x700 + node ID

device monitoring

cyclic “sign of life”

Bootup

0x700 + node ID

device monitoring

once, after power ON

LSS(tx)

0x7E4 = 2020

setting of baud rate,
or node ID

slave (CANtrans) to
master

LSS(rx)

0x7E5 = 2021

setting of baud rate,
or node ID

master to
slave (CANtrans)