Scada, Plc, Sap Flashcards
When are acknowledged alarms deleted?
Never
What are the 3 categories of SCADA alarms?
Critical
Non critical
Event
How many intersite modes are there and what are they?
Normal- Host/jurisdiction is POC
Fallback- Host/jurisdiction Is ACC
Backup-Host/jurisdiction is CBPOC
What is the difference between scheduled and actual time in planning of a WCM?
Scheduled time is the unavailable time and the actual is when work is being done and maintenance has the equipment
Does WCM verify a clearance within a clearance? What does it do?
No it only seems common points or at a piece of equipment being placed in opposite states
Information technology policy: what institutes a security asset violation?
Physical/ electronic information being misused such as a loss of equipment, damage, malicious code infection etc.
What does DWR monitor with information technology?
May monitor all IT resources including internet usage and network traffic to ensure that department policies are being followed
Who can check your usage?
Managers and supervisors
Who can access emails remotely?
anyone
What is a PLC”s original purpose
To replace relay controlled systems
How many parts are there to a PLC and what are they?
Power supply Inputs Processor Outputs Memory system
What is the function of a PLC?
Uses integrated circuits instead of electromechanical devices to implement control functions
What is volatile memory?
Loses programmed contents of operating power is lost
Non volatile:
Retains programmed contents even during a complete loss of operating power
Application memory
Provides a storage area for the user programmed instructions that form the application program
Executive memory:
Collection of permanently stored programs that are a part of a PLC
Ladder diagrams:
Softwired or programmed into PLC’s rather than hardwired
I/O device
Physically hardwired to field devices
ROM
Read only memory
Designed to permanently store a fixed program that can not usually be changed
RAM
Read/write memory
Designed so that info can be written into or read from the memory storage area
Scan
Process of reading the inputs, executing the program and updating the output
PLC
Programmable logic controller
Host
Receiving data from the RTU’s
RTU
Remote terminal unit
Collects and transmits field data to the host system and executes supervisory control
SOE
Sequence of events
RTU collects soe data
Sampled points from engineers
RTU records every change in value
Changes time stamped to the millisecond by the RTU
FEP
Front end processor
Polls all RTU’s to collect data
Performs pre processing of data prior to sending it to host computer
Control scanning
Forward supervisory control commands from host to field termination points
Time command
Provides set point and time scheduling function for control sequences
Jurisdiction and who?
Sending jurisdiction determines which operator and dispatcher work stations can issue controls
Modem
Hardware device that converts data from a digital format to be suitable for a transmission medium
What is on the SAP user menu?
Transaction command bar Main command bar Command field Menu paths Information of the transaction
What is a variant?
A way of saving a set of values in fields within a transaction so that they are already defaulted
Where can you find your time statement?
PT50
“Quota overview”
What is a SAP favorite menu?
Your user menu containing all the transactions that you are authorized to run
How many times can you sign into SAP at once
You can login 4 times with six sessions in each login
What are the two main SAP screens
Maintenance screen
Switching screen
What does it mean when print icon is still available?
Not everything has been printed
SAP stands for?
System application production
SCADA stands for?
Supervisory controls and data acquisition
What are the SAP trigger words?
- tag
- untag
- info
- both
- clear
What can happen when set as prepared?
Cannot make changes to existing lines except for sequencing or adding more text
What are the differences between sw for placement and removal pages
Placement
Green
All lines with tagging sequence numbers are included followed by 2 or 3 pga for issuing and releasing
Removal
Red
All lines with untagging sequence numbers are included
