Protocols Supported By Mailbox 2.0; Table 54 Protocol 0X80, Description Of Services; Table 55 Protocol 0X80, Pdu Structure - WAGO 750 Product Manual

750-1632/000-100

8.3 Protocols Supported by Mailbox 2.0

Messages can be exchanged between different devices using the Mailbox 2.0 transfer
procedure. The respective communication partner can only understand exchanged mes-
sages if they are structured in line with a known protocol. The Mailbox 2.0 transfer proce-
dure uses the "Protocol ID" field of the expanded header to identify the protocol being
used.
Each of the transmitted messages consists of the header and a protocol data unit (PDU)
whose length and structure are based on the specific protocol.
Protocol 0x80 (Parameter Access)
This protocol implements confirmed services for reading, writing, storing and restoring pa-
rameters.
Service
Read
Write
Save
Restore
Set password
The structure and length of the PDUs for this protocol differ for request and reply mes-
sages.
Service
Request: read
Request: write
Request: save
Request: re-
store
Request: set
password
Reply without
parameter
Reply with pa-
rameter
Legend
–
TAB
REG
D1
D0
Product manual | Version: 1.1.0
Proportional Valve Module 2-3-4
Structure of PDU (Bytes 0 ... 5)
0 1
0x00 0x01
0x00 0x04
0x00 0x09
0x00 0x0c
0x00 0x0d
0x00 RSP
0x00 RSP
This byte is not used by this PDU
Table number
Register number
Parameter, top byte (MSB)
Parameter, bottom byte (LSB)
Table 54: Protocol 0x80, Description of Services
Description
Reading a parameter addressed by a table and regis-
ter number.
Writing a parameter addressed by a table and a regis-
ter number.
Written values are initially saved only to volatile mem-
ory. The "Save" service must be used to save parame-
ters to non-volatile memory.
Save all parameters to non-volatile memory.
Restore factory settings.
This overwrites all values of all parameters.
This service must be executed once before any pa-
rameters can be written.
Table 55: Protocol 0x80, PDU Structure
2 3
TAB REG
TAB REG
– –
– -
0x35 0x12
– –
D1 D0
Appendix
4 5
– –
D1 D0
– –
– –
– –
– –
– –
83