Need more practice
A VFD can be manually operated using ______________. - A user interface - A control keypad - A communication interface - Power connections
A control keypad
Which of the following situations would result in Output Y being turned OFF? ...........A.............B......................Y |———][———-][——-+———( )——-| ...................C |—————][—————+ - A=ON, B=ON, C=ON - A=ON, B=ON, C=OFF - A=ON, B=OFF, C=OFF - A=OFF, B=OFF, C=ON
A=ON, B=OFF, C=OFF
Which of the following situations would result in Output Y being turned ON? ...........A.............B......................Y |——]/[———-]/[——-+———( )——-| ...................C |—————]/[—————+ - A=ON. B=ON. C=ON - A=ON, B=ON, C=OFF - A=ON, B=OFF, C=ON - A=OFF, B=ON, C=ON
A=ON, B=ON, C=OFF
What is the first step in configuring an expansion output module? - Click the limits Configuration tab - Add the analog output module to the Tag structure - Open the Tag monitor - Add it to the PLC project
Add it to the PLC project
What protocol does Ethernet/IP use to send and receive industrial device data? - Modbus Protocol - Control Protocol - Device Network Protocol - Common Industrial Protocol
Common Industrial Protocol
What is one of the most common PLC applications? - Controlling start/stop of a varying-speed electric motor - Moderating speed changes of an electric motor - Controlling start/stop of a constant-speed electric motor - All of the above
Controlling start/stop of a varying-speed electric motor
This instruction decreases its count value (CV) by one each time its input turns from false to true. - Timer on-delay (TON) - Timer off-delay (TOF) - Count down (CTD) - Count up (CTU)
Count down (CTD)
With which instruction is the Q input turned on when the CV is equal to or less than zero? - Count down (CTD) - Timer off-delay (TOF) - Timer on-delay (TON) - Count up (CTU)
Count down (CTD)
PLO counter instructions provide this in PLC programs. - Math instructions - Messaging instructions - Count-based logic - lime based logic
Count-based logic
EtherNet/IP streamlines network building by using special files called ________ that compile CIP code automatically. - EDS - RPI - CIP - API
EDS (Electronic Data Sheet)
Which type of sequence uses input sensors to signal to the controller that each step in the sequence is complete? - Automatic sequence - Manual sequence - Event-driven sequence - Time-driven sequence
Event-driven sequence
A network _____________ is powerful enough to convert between different protocols and transmission speeds. - Hub - Server - Gateway - Switch
Gateway
Which of the following is downloaded to HMI memory from the PC? - HMI driver - HMI Ladder Logic Diagram - HMI power requirements - HMI program
HMI program
Which of the following is true for a Static Screen object? - It only interacts with the PLC - It is used to power off the HMI device - It does not interact with the PLC - It is used to display alarms
It does not interact with the PLC
Which type of tags identify the memory locations that store the on/off status of the PLC's I/O terminals? - Symbol tags - Alias tags - Module-defined tags - Non-module-defined tags
Module-defined tags
IPv6 networks generate dynamic IP addresses using ___________. - NDP - ARP - DHCP - ТСР/IР
NDP (Neighbor Discovery Protocol)
Which type of discrete input instruction is closed, or true, when its input terminal is energized by a voltage? - Absolute Instruction - Direct coil instruction - NC contact instruction - NO contact instruction
NO contact instruction
CIP protocol sees each device as a group of __________. - Commands - Devices - Signals - Objects
Objects
When you download a project, the file that is ______________. - Resident in the processor is copied to the RSLogix 5000 software - Open in RSLogix 5000 is copied to the processor - Resident in the processor is merged with the file - Open on the desktop is exported to Excel
Open in RSLogix 5000 is copied to the processor
What are linked by the PLC to I/O instructions in its internal program through the use of addresses? - Physical inputs and outputs - NO contact instructions - NC contact instructions - Output coil instructions
Physical inputs and outputs
Which keyswitch setting on Allen Bradley PLC's will allow the processor mode to be changed from a programming terminal? - RUN - PROG - REM - Cannot be done
REM
Which input is used by a retentive RTO instruction that is not used by the non-retentive TON and TOF instructions? - Enable - Preset - Reset - Reset time
Reset time
Dedicated servers, managed switches, and ___________ are used to control DHCP. - Unmanaged switches - Proxies - Gateways - Routers
Routers
___________ enable packet exchange between subnets. - Routers - Subnet masks - MAC addresses - Gateways
Routers
Which non-retentive timer instruction turns on its output when its input turns true? - TFO - TON - TOF - TNO
TOF
Which type of non-retentive timer only turns on its Q output after the elapsed time is equal to the preset time? - TFO - TON - TOF - TNO
TON
What are function blocks? - They are PLC programs - They are unique blocks of data used in a PLC program - They are special PLC instructions that package multiple rungs of logic for insertion into a PLC program - They are manufacturer-supplied software built into the PLC's firmware
They are special PLC instructions that package multiple rungs of logic for insertion into a PLC program
This type of counter instruction counts from 0 to a preset value before turning on its output. - Timer off-delay (TOF) - Count up (CU) - Timer on-delay (TON) - Count down (CTD)
Timer on-delay (TON)
6. Ethernet/IP uses the ____________ protocol to stream time-critical data. - CIP - UDP - ТСР/IР - RPI
UPD (User Datagram Protocol)
The VFD's _________ enable(s) users to navigate parameter menus and to monitor and edit VFD settings. - User interface - Control keypad - Communication interface - Control connections
User interface
In ladder logic of Allen Bradley PLCs, the instruction that resembles a set of normally-open contact and looks like —-][---, is a(n) instruction. - XIC - XIO - OTE - OUT
XIC (Examine if closed)
