Protocols Supported By Mailbox 2.0; Protocol 0X80 (Parameter Access); Table 33: Protocols Supported By Mailbox 2.0; Table 34: Protocol 0X80, Description Of Services - WAGO -I/O-SYSTEM 750 Manual

80 Appendix
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10.2

Protocols Supported by Mailbox 2.0

Messages can be exchanged between different devices using the Mailbox 2.0
transfer procedure. Messages that are exchanged can be read by the
communication partner only when they are structured in line with a known
protocol. The Mailbox 2.0 transfer procedure uses the field "Protocol ID" 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.
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The I/O module supports the following protocols:

Table 33: Protocols Supported by Mailbox 2.0

Protocol ID Protocol Name Description
0x80
0x81
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10.2.1

Protocol 0x80 (Parameter Access)

This protocol implements confirmed services for reading, writing, storing and
restoring of parameters.

Table 34: Protocol 0x80, Description of Services

Service
Read
Write
Save
Restore
Set password
The structure and length of the PDUs for this protocol differ for request and reply
messages.
Parameter Protocol for reading and writing of parameters
access
Diagnostics Protocol for transfer of diagnostics messages
Description
Reading of a parameter addressed by a table and register
number.
Writing of a parameter addressed by a table and a register
number. Written values are initially saved only to a volatile
memory. The service "Save" must be used to save parameters
to a non-volatile memory.
Save all parameters to a non-volatile memory.
Restore factory default settings. All current parameter values
will be overwritten.
You must perform this service one time before any parameters
can be written.
WAGO-I/O-SYSTEM 750
Version 1.2.0, valid from FW/HW-Version 01/01
750-658 CAN Gateway
Manual