Allen-Bradley ClutchBrake PLC-5 Series - Exchanging Data between Processors

4–18 Write Ladder Logic
Publication 65566.5.1 - October 1996
Figure 4.21
Example
Command to Start Inch Mode After Pressing Inch Buttons B151/28
Use this bit as the last logical condition to start inch motion in
combination with pressing Inch buttons manually.
| Simulate Inch |
| Inch Output |
| Buttons Enabled |
| B156 B151 |
+–––] [––––––––––––––––––––––––––––––––––––––––––––––( )––|
| 9 28 |
Figure 4.22
Example
Command to Allow Immediate Press Start in Auto Single Mode B151/29
Use this bit in automatic single stroke mode to start press motion
without first cycling the press manually with Run buttons.
| Start Initiate |
| Auto Auto |
| Single Single |
| I:040 B151 |
+–––] [––––––––––––––––––––––––––––––––––––––––––––( )––|
| 10 29 |
PLC-5 processors have a unique feature that transfers data between
processors in a scanner mode/adapter mode configuration. The
clutch/brake software uses channel 1B and rack address 02 on the
remote I/O network to transfer required information between
processors. The C/B software configures the processor in chassis A
for scanner mode and the processor in chassis B for adapter mode.
Important: For the adapter-mode processor (chassis B), we have
changed the adapter-mode configuration of channel 1B from rack 03
(default) to rack 02. For more information, refer to the documentation
that accompanied your programming software.
ATTENTION: If your application requires additional I/O racks
on this network, use rack addresses other than rack 02, and take
care not to excessively load the network and extend system
response time. Either could cause unpredictable machine
response with possible personal injury and/or equipment damage.
If you want to transfer discrete data bits between processors in chassis
A and B, we reserved one I/O image table word (O:27) for you to use.
The processors exchange information as follows:
• an output in processor A = an input in processor B
(O:027/03 in processor A = I:027/03 in processor B)
• an input in processor A = an output in processor B
(I:027/03 in processor A = O:027/03 in processor B)
Exchanging Data
Between Processors