CanOpen protocol
Positioning module IMD20, IMD40
EMCY
Emergency messages are trigg
y intern
in the d
sen
h priority to the
Can bus. A superordinate control can thus react very quickly
bnormal behaviour of individual
m
en
By default
essage is characterised by the identifier 0x80 +
mber.
ith the emergency object, 8 data bytes are transferred for the error description. The structure of an
ssage looks as follows:
ered b
al errors
evice and
to an a
t with a hig
co pon
ts.
, the emergency m
node nu
W
emergency me
0x
2 bytes
1 byte
5 bytes
080 +
ode-ID
N
Emergency error c
EEC
ode
Error
register
Manu
urer-
ecific error field
MEC
fact
sp
ID
he first two bytes contain the error code of the fault that occurred. In the 3
rd
byte, the error register
1
h
) is transferred which only includes a rough classification of the type of error. The last 5
ntain manufacturer-specific error information.
n page 40.
Network management -
he network management administers the communication’s basic functions of the participants in the
n network. Here, a master-slave configuration is taken as a basis, in which an NMT master
s the state
ther pa
ts
Status changes of individual or all NMT slaves (Start, Stop, R
are triggered by an NMT object
00. This obj
er and alway
te
he
ontains a
o
term
g
tate of the
data byte defines, if all slaves are addressed at the same time or if individua
T
(object 100
bytes may co
See Fault states o
NMT
T
CanOpe
controls and regulate
of all o
rticipan (NMT slaves).
eset...)
with the Can
by
identifier 0x0
first byte c
ect is sent
command c
by the NMT ma
de de
st
the s
s possesses two data
NMT slave. The second
l nodes only are used.
s. T
inin
CS
ID = 0x000
NMT Master
NMT Slave
2 data bytes
NMT Obj
NMT command
ect
.....
0
Al
co
l nodes rec ve the NMT
mmand.
7
ei
1 - 12
NMT Slave
Recipient
N
he indic
nod
es the N
comm
ode ID
Only t
receiv
ated
MT
e
and.
Command code (CS) of the NMT object
CS Meaning
0x01
“Start Remote Node“
Activate the Operational state
0 02 “Stop
Remote
Node“
Activate the Stopped state
x
0x80 “Enter
Pre-Operational“
Activate the Pre-Operational state
0x81
“Reset Node“
Reset of all parameters and restart
86