Allen-Bradley ClutchBrake PLC-5 Series - Page 77

4–15Write Ladder Logic
Publication 65566.5.1 - October 1996
Figure 4.15
Example
Commands to Indicate the Absence of Physical Inputs B151/20,
B151/21, and Physical Outputs B151/19, B151/22
When customizing your design to omit certain valve hardware
wiring, program the following command bits unconditionally to tell
the software to ignore corresponding physical inputs that are absent:
Program this bit When
B151/19 Aux Valve 1 Enabled Auxiliary valve 1 is not used
B151/20 Aux Valve Stems Enabled Auxiliary valves have no valve stem switches
B151/21 C/B Valve Stems Enabled C/B valves have no valve stem switches
B151/22 Aux Valve 2 Enabled Auxiliary valve 2 is not used
| Aux Valve 1 |
| Enabled |
| B151 |
+––––––––––––––––––––––––––––––––––––––––––––––––––( U )––|
| 19 |
| Auxiliary |
| Valve Stems |
| Enabled |
| B151 |
+––––––––––––––––––––––––––––––––––––––––––––––––––( U )––|
| 20 |
| Clutch/Brake|
| Valve Stems |
| Enabled |
| B151 |
+––––––––––––––––––––––––––––––––––––––––––––––––––( U )––|
| 21 |
| Aux Valve 2 |
| Enabled |
| B151 |
+––––––––––––––––––––––––––––––––––––––––––––––––––( U )––|
| 22 |
Figure 4.16
Example
of the Command to Clear a Fault Generated by C/B Software B151/23
You can clear a processor fault by switching the press mode selector
to OFF. As an alternative, you can use a remote pushbutton to clear
a processor fault by programming bit B151/23 as follows:
| Remote Fault |
| Pushbutton Reset |
| B156 B151 |
+–––] [––––––––––––––––––––––––––––––––––––––––––––( )––|
| 13 23 |