6–122 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
S4 CONTROLS CHAPTER 6: SETPOINTS
Operand types and descriptions
The following tables of Logic Operands, taken from Function Code FC134B in the 3 Series 
Communications Guide, show the list of available Logic Inputs. Where specific event 
descriptions are not given, a general description applies as follows:
General descriptions of operands originating from protection, control, and monitoring 
elements:
General descriptions of operands originating from digital elements such as contact, virtual 
and Remote inputs, Output Relays, and Virtual Outputs:
"..operand name..Trip PKP" The function setpoint of the element has been programmed as "Trip" and the element picked up
"..operand name.. Trip OP" The function setpoint of the element has been programmed as "Trip" and the element operated
"..operand name.. Trip DPO" The function setpoint of the element has been programmed as "Trip" and the element operation 
dropped out
"..operand name..Alarm PKP" The function setpoint of the element has been programmed as "Alarm" and the element picked up
"..operand name.. Alarm OP" The function setpoint of the element has been programmed as "Alarm" and the element operated
"..operand name.. Alarm DPO" The function setpoint of the element has been programmed as "Alarm" and the element operation 
dropped out
"..operand name.. Block" The operation of the element has been blocked
"..operand name.. Off "The status of the selected input or output is OFF 
"..operand name.. On "The status of the selected input or output is ON 
Element Operands Event Description
Contact Inputs Contact IN 1..10 On
Contact IN 1..10 Off
Virtual Inputs Virtual IN 1..32 On
Virtual IN 1..32 Off
Remote Inputs Remote IN 1..32 On
Remote IN 1..32 Off