Rockwell Automation Allen-Bradley 842D, User Manual

Page: 37 / 58

Using DeviceNet Explicit Messaging 6-3
Example Values
One of the following tables of data is sent to and received from the
1747-SDN. Values shown are in hexadecimal (even the MAC ID).
Data Description
The table below defines the data types and is followed by their
definitions.
Table 1: Preset (set service) Example to position 00 00 00 00h (0 decimal)
Offset 0 1 2 3 4 5 6 7
N20:0 00 04 - - - - - - -
N20:10 02 01 00 0A 10 MacID 002F 0001 000A 00 00 00 00
... - - - - - - - -
N20:50 02 01 00 00 90 MacID - -
- - - - - - - - -
Table 2: Preset (set service) Example to position 01 35 D0 B2h (20304050 decimal)
Offset 0 1 2 3 4 5 6 7
N20:0 00 04 - - - - - - -
N20:10 02 01 00 0A 10 MacID 002F 0001 000A D0 B2 01 35
... - - - - - - - -
N20:50 02 01 00 00 90 MacID - -
- - - - - - - - -
Table 3: Data Type (see definitions on next page)
Offset 0 1 2 3 4 5 6 7
N20:0 Delete
Block Cmd - - - - - - -
N20:10 TX ID,
Command Port, Size Service
Req,
MacID Class Instance Attribute Preset
ValueLSW Preset
ValueMSW
... - - - - - - - -
N20:50 RX ID,
Status Port, Size Service
Rsp,
MacID - -
- - - - - - - - -