94 Appendix
WAGO-I/O-SYSTEM 750
750-658 CAN Gateway
Manual
Version 1.2.1, valid from FW/HW-Version 01/01
Table 43: Protocol 0x81, Description of Services
Service
Description
Diagnostics
Transmission of a diagnosis as a message.
The table below shows the structure of PDUs for this protocol:
Table 44: Protocol 0x81, PDU Structure
Service PDU
Structure of PDU (Bytes 0 … 5)
0
1
2
3
4
5
Diagnostics
0xFF EC1 EC0 0x00 EQ
-
Table 45: Protocol 0x81, Structure of PDUs, Legend
Description Description
-
This byte is not used by this PDU
EC1
Event or error code, top byte (MSB)
EC0
Event or error code, bottom byte (LSB)
EQ
Event qualifier:
Bit 7 … 6
Mode
0: reserved
1: One-time message
2: Event disappears
3: Event appears
Bit 5 … 4
Type:
0: reserved
1: Notification
2: Warning
3: Error
Bit 3 … 0
(reserved)