PLC second intermediate

Status of input devices are stored in ________ Register.

• Output single
• Input single
• Output group
• Input group

Each instruction on a ladder diagram has a reference number associated with it which is_________

• Its instruction comment
• Its position identifier on the ladder rung
• a number referencing the instructions associated input status table bit addrress
• the instructions input address

Holding register is also known as_______.

• Input register
• Output Register
• Working Register
• Group Register

Address O1: 02/00, in which ‘:’ is known as__________.

• Bit delimiter
• File delimiter
• Rack No.
• File No.

Address I1: 02/00, in which ‘I’ is known as__________.

• Terminal No.
• File Type
• Rack No.
• File No.

Address O1: 02/00, in which ‘/’ is known as__________.

• Bit delimiter
• File delimiter
• Rack No.
• File No.

The main difference between a TON and a TOF timer is ___________

• TON maintains accumulated time on loss of power to rung logic while TOFF cannot.
• TOFF maintains accumulated time on loss of power to rung logic while TON cannot.
• TOFF timer begins timing when logic continuity, to rung is lost and TON begins timing when logic continuity to rung is maintained
• TON timer begins timing when logic continuity to the timing rung is lost and TOFF viceversa

The______ specifies at what rate the timer will increment

• preset time
• base time
• reset time
• rise time

A _________timer initiates an action at a specified time after enable input is made low.

• ON delay timer
• OFF delay Timer
• Retentive timer
• Pulse repetitive Timer

For Retentive timers ________input is mandatory.

• Enable
• Marker relay
• Reset
• Active