Rockwell Automation MMCL Using the Mining, Mineral, and Cement Library (MMCL) in RSLogix 5000 Appli - Manual (Page 28)

Publication RA-UM002B-EN-P - November 2010
28 Control Group
Enabling Automatic
Operation
Each Control Group CtrlGrp provides two outputs, an EnAutoStart (enable
automatic start) and an EnAuto (enable automatic operation) signal, that are
used for motor control and that may be switched by Machine Group Modules
MaGrp. The bits are used in the application, to interlock the automatic
operation of modules, such as Motors/Valves etc., that use the signals as
inputs. A module will start only if both EnAutoStart AND EnAuto are ON
and it will stop if the EnAuto is OFF. A restart is only possible if the
EnAutoStart (OR the EnAuto) was set OFF for a cycle.
Note: In a chain of Devices the EnAuto Input is normally used as a process
Interlock.A following Device, has controlled his EnAuto from the previous
Module, connected to their RdyAuto.Control Group Module automatic start
/-stop timing