Rockwell Automation 20-COMM-D DeviceNet Adapter Series B FRN 2.xxx - Manual (Page 33)

Configuring the Adapter 3-5
20-COMM-D DeviceNet Adapter User Manual
Publication 20COMM-UM002G-EN-P
Selecting Master-Slave or
Peer-to-Peer Hierarchy
A hierarchy determines the type of device with which the adapter exchanges
data. In a Master-Slave hierarchy, the adapter exchanges data with a master,
such as a scanner (1756-DNB, 1771-SDN, 1747-SDN, and so forth). In a
Peer-to-Peer hierarchy, the adapter exchanges data with one or more
DeviceNet adapters connected to other drives. (The drives must have
compatible Logic Command/Status words.)
Setting a Master-Slave Hierarchy (Scanner-to-Drive Communication)
1. Enable the desired I/O in Parameter 13 - [DPI I/O Cfg].
See Setting the I/O Configuration on page 3-4 .
2. Set the bits in Parameter 25 - [M-S Input].
This parameter determines the data received from the master by the
drive. A ‘1’ enables the I/O and a ‘0’ disables the I/O.
Bit 0 is the right-most bit. It is highlighted above and equals ‘1’.
3. Set the bits in Parameter 26 - [M-S Output].
This parameter determines the data transmitted from the drive to the
scanner. A ‘1’ enables the I/O and a ‘0’ disables the I/O.
Bit 0 is the right-most bit. It is highlighted above and equals ‘1’.
4. Reset the adapter (see Resetting the Adapter on page 3-12 ).
The adapter is ready to receive I/O from the master (that is, scanner). You
must now configure the scanner to recognize and transmit I/O to the adapter.
See
Chapter 4 , Configuring the I/O .
Bit Description
0 Logic Command/Reference (Default)
1 Datalink A Input
2 Datalink B Input
3 Datalink C Input
4 Datalink D Input
5…15 Not Used
Port 5 Device
20-COMM-D
Parameter #: 25
M-S Input
x x x x x x x x x x x 0 0 0 0 1
Cmd/Ref b00
Bit Description
0 Status/Feedback (Default)
1 Datalink A Output
2 Datalink B Output
3 Datalink C Output
4 Datalink D Output
5…15 Not Used
Port 5 Device
20-COMM-D
Parameter #: 26
M-S Output
x x x x x x x x x x x 0 0 0 0 1
Status/Fdbk b00