Bit
Name
Description
5
Status of the protective field in monitoring
case 6:
0 = Interrupted
1 = Free
6
Status of the protective field in monitoring
case 7:
0 = Interrupted
1 = Free
7
Status of the protective field in monitoring
case 8:
0 = Interrupted
1 = Free
4.5.1.3
Emergency
A safe multibeam scanner uses the node ID N to send an emergency message to
inform the other devices of an error state.
Table 27: Emergency messages
CAN-ID
DLC
Data
80h + N 8
ErrL
ErrH
Err-Reg M1
M2
M3
M4
M5
ErrL, ErrH
Emergency error code. 16-bit low byte/high byte
1020h: Configuration error
1030h: Critical error
Err-Reg
Error register. CANopen object SDO 1001h
M1 ... M5
Reserved
4.5.1.4
NMT – Network management
NMT – Network management
The broadcast object NMT is used to start, stop or initialize CANopen devices. For this
purpose, one device in the CANopen network must perform the role of the NMT master.
This is usually the PLC. All other devices are regarded as NMT slaves. NMT services are
broadcast services for which the slaves do not generate any responses.
All NMT objects start with the CAN ID 00h.
Broadcast service for an NMT slave with node ID N
Table 28: Network management for an NMT slave with node ID N
CAN-ID
DLC
Data
00h
2
OP
N
Broadcast service for all NMT slaves
Table 29: Network management for all NMT slaves
CAN-ID
DLC
Data
00h
2
OP
0
OP
NMT command
Explanation
80h
Go into pre-operational
After booting, an NMT slave automatically goes into the
pre-operational state. In this state, communication via
SDOs is allowed but not via PDOs. The NMT slave can be
switched from another state into this state.
PROJECT PLANNING
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