Omron C200HW-CORT21-V1, Operation Manual

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Setting up a network
Section 3-3
45
3-3-2-9 Storing / Restoring of Parameters
Storing Parameters
The C200HW-CORT21-V1 allows storage of parameters of the Communi-
cation Profile Area and of the Manufacturer Specific Profile Area in non-
volatile memory. Appendix B lists the stored parameters.
At power-on, the Unit is initialised with the stored parameter values.
The parameters are stored via an SDO access to the object at index 1010h.
The following figure shows the structure of this object.
Index Sub-index Object Default value
1010h -
Store Parameters
-
1010h 00h Number of entries
1
1010h 01h Save all parameters
1
Reading from sub-index 01h returns the value ‘1’, which means that
parameters are only saved on command. The parameters are saved when
the ASCII codes of the signature text ‘save’ are written to sub-index 01h.
Note that the character 's' is sent as the least significant byte, therefore the
32-bit 'value' of the signature text becomes 65766173h:
Store Parameter Signature
e v a s
65h 76h 61h 73h
Any other value than 65766173h written to sub-index 01h will result in an
abort response.
Storing of all parameters takes approximately four seconds. Writing to any of
the parameters that need to be stored, or issuing another store or restore
command during this period will not be possible and will result in an abort
message. If the Unit is reset during these four seconds, the Unit will:
•
restart with factory default values
•
indicate an error on the 7-segment display (see section 6-5)
•
send an emergency message to indicate an non-volatile memory error
(see section 6-2, EEC = FF00h).
This error is also indicated when it is not possible to write to the non-volatile
memory. The error is resolved when a store command has been carried out
successfully.