gefran SBI-DN, Инструкция по эксплуатации, Страница: 23 / 70

SBI-DN
23
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Interface Board DeviceNet
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3.2.2.5 Object Specific services
Class Instance
32
hex
n/a Required Get_APC_
Value
Read APC option
parameter value
33
hex
n/a Required Set_APC_
Value
Writes APC option
parameter value
dn395
Service
Code
Need in
implementation Service
Name
Description of
Service
3.2.2.6 Behavior
This object is the interface between the DeviceNet networkand all parameters of
the optional APC card that can be mounted on the drive. The access to the APC
parameter is made by the parameter index and the data type: if the parameter
does not exist or cannot be accessed for any reason (i.e. try to write a read only
parameter) a specific APC error code is returned.
Hereafter are reported patterns of how to compose the data frame for read/write
APC parameters.
3.2.2.6.1 Write APC Parameter
In this example the writing of a APC parameter is reported; cases of positive and
wrong writing are distinguished.
3.2.2.6.1.1 Write APC Parameter Request
The data frame for writing a APC parameter is composed as follows:
DATA TYPE FIELD VALUE MEANING
Byte
Service
Code
33hex
Set APC Parameter -
Object Specific Service.
Class ID 67hex
APC Parameter Access
Class Object.
Instance ID XXXX
APC Parameter Index in
format Low byte-High byte.
Data Type
2)
XX
APC specific data type
code.
N/U 00
Not used; has to be set to
zero.
XX
Low byte-Low word APC
parameter value.
XX
High byte-Low word APC
parameter value.
XX
Low byte-High word APC
parameter value.
XX
High byte-High word APC
parameter value.
dn3960
VALUE
See Note
1)
Byte
1) Byte or Word depending on the type of allocation executed by the Master.
2) For codes see APC- manual.