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SI-DeviceNet User Guide
57
Issue Number: 2
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11.2
SI-DeviceNet Object
Class:
0x03 (3)
The DeviceNet Object provides the configuration and status of the SI-DeviceNet port.
11.2.1 MAC-ID
The MAC-ID is read from Pr
S.01.004
at power up and reset. When this attribute is
written to, the SI-DeviceNet will update the MAC-ID in Pr
S.01.004
and reset, causing
the new value to take effect immediately.
11.2.2 DataRate
The Data Rate is read from Pr
S.01.007
at power up and reset. When this attribute is
written to, the SI-DeviceNet will update the Data Rate in Pr
S.01.007
. The new value is
not stored automatically, and the SI-DeviceNet is not reset.
Table 11.4 shows the attribute values for each data rate.
Table 11.4 DeviceNet data rate
11.2.3 AllocationByte
Returns 2 bytes of information. The low byte contains the Allocation Byte, with each bit
assigned as shown in the table below.
The high byte indicates the MAC-ID of the master device which allocated the Master/
Slave pre-defined connection set. A value of 255 means the pre-defined Master/Slave
connection set has not yet been allocated.
Name:
MAC-ID
Class
0x03
Default
63
Instance
0x01
Data Type
USINT
Attribute
0x01
Access
Get/Set
Name:
DataRate
Class
0x03
Default
0
Instance
0x01
Data Type
USINT
Attribute
0x02
Access
Get/Set
Setting
bits/sec
0
125K
1
250K
2
500K
Name:
AllocationByte
Class
0x03
Default
0
Instance
0x01
Data Type
USINT
Attribute
0x05
Access
Get
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