WAGO-I/O-SYSTEM 750
Appendix 93
750-658 CAN Gateway
Manual
Version 1.2.1, valid from FW/HW-Version 01/01
Table 41: Protocol 0x80, PDU Structure
Service PDU
Structure of PDU (Bytes 0 … 5)
0
1
2
3
4
5
Request: Read
0x00 0x01 TAB REG
-
-
Request: Write
0x00 0x04 TAB REG D1
D0
Request: Save
0x00 0x09
-
-
-
-
Request: Restore
0x00 0x0c
-
-
-
-
Request: Set password
0x00 0x0d 0x35 0x12
-
-
Reply without parameter
0x00 RSP
-
-
-
-
Reply with parameter
0x00 RSP D1
D0
-
-
Table 42: Protocol 0x80, Structure of PDUs, Legend
Description Description
-
This byte is not used by this PDU
TAB
Table number
REG
Register number
D1
Parameter, top byte (MSB)
D0
Parameter, bottom byte (LSB)
RSP
Reply status:
0x00
Executed successfully
0x01
Execution failed
0x02
Access denied
0x03
Table protected
0x04
Incorrect data length
0x05
Unknown table
0x06
Unknown register
[0x07...0xFF]
(reserved)
Note
Overlapping (concurrent) execution of confirmed services is
prohibited!
A confirmed service consists of the transmission of a request and the
reception of a reply. Overlapping execution of confirmed services is
prohibited. Once a service request has been transmitted, the reply must
first be received before a further request can be sent.
12.2.2 Protocol 0x81 (Diagnostics)
This protocol implements the transmission of diagnoses as an unconfirmed
service.