Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B - Manual (Page 161)

Publication 900-UM007D-EN-E - January 2011
Parameter Adjustments & Application Considerations 4-25
Switching 40% ATExecute/Cancel
When AT-1 (40% AT Execute/Cancel) is set for either the Event Input
Assignment1 or Event Input Assignment 2 parameter, 40% AT will be
executed when event input 1 or 2 turns ON and will be cancelled when the
input turns OFF
Switching Setting Change Enable/Disable
When WTPT (Setting Change Enable/Disable) is set for either the Event
Input Assignment 1 or Event Input Assignment 2 parameter, the setting
change will be disabled when event input 1 or 2 turns ON and will be enabled
when the input turns OFF.
Switching Alarm Latch Cancel
When LAT (Alarm Latch Cancel) is set for either the Event Input Assignment
1or Event Input Assignment 2 parameter, all alarm latches (alarms 1 to 3,
heater burnout, HS alarm, and heater over-current latch) will be cancelled
when event input 1 or 2 turns ON.
Table 4.P
Setting Input Status
Event Input 1 or 2 OFF 40% AT cancelled
Event Input 1 or 2 ON 40% AT executed
Table 4.Q
Setting Input Contact Status
Event input 1 or 2 OFF Enabled
Event input 1 or 2 ON Disabled
Table 4.R
Setting Input Contact Status
Event input 1 or 2 OFF ---
Event input 1 or 2 ON Cancelled