Rockwell Automation RECOMM-CNET ControlNet Communications Module - Manual (Page 24)

4-4 ControlNet Communications Module
4.5 Selecting Master-Slave
A hierarchy determines the type of device with which the module
exchanges data. In a Master-Slave hierarchy, a module exchanges
data with a scanner.
To set a Master-Slave hierarchy
Step 1. Enable the desired I/O in DPI I/O Config (13). Refer to
figure 4.3.
Step 2. Set the bits in the M-S Input (25). This parameter
determines the data transmitted from the scanner to the
drive. A “1” enables the I/O. A “0” disables the I/O.
Bit 0 is the right-most bit. In figure 4.4, it is highlighted and equals
“1.”
Step 3. Set the bits in the M-S Output (26). This parameter
determines the data transmitted from the drive to the
scanner. A “1” enables the I/O. A “0” disables the I/O.
Bit 0 is the right-most bit. In figure 4.5, it is highlighted and equals
“1.”
Step 4. Reset the module. Refer section 4.7.3 for this procedure.
Figure 4.4 – Master-Slave Input Screen on an LCD OIM
Figure 4.5 – Master-Slave Input Screen on an LCD OIM
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
RECOMM-CNET
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
RECOMM-CNET
Parameter #: 26
M-S Output
x x x x x x x x x x x 0 0 0 0
1
Status/Fdbk b00