Networking and Computer Basics Quiz

Questions and Answers

What does the term RPI refer to in the ControlLogix hardware environment?

Rapid Protocol Integration

Requested Packet Interval (correct)

Real-time Processing Indicator

Remote Programmable Interface

What does a RED flashing 'OK' LED signify on a ControlLogix Processor?

The processor requires a firmware update

The processor is in standby mode

The processor is operating normally

The processor is in fault mode (correct)

What is the maximum number of characters allowed in a ControlLogix tag name?

64 characters

32 characters

128 characters

256 characters (correct)

In a TOF (Timer Off Delay) timer, what state is the (DN) bit in while the timer is actively timing?

The (DN) bit is always off (0) Signup and view all the answers

What is the primary function of the RSLinx software?

Communicating with Allen-Bradley devices Signup and view all the answers

How is a Latched Coil [OTL] functionally different from a normal Output Energize [OTE] Coil?

OTL requires a reset signal, while OTE does not Signup and view all the answers

What is the main purpose of a Subnet mask in networking?

To define the range of IP addresses in a subnet Signup and view all the answers

What distinguishes Layer 2 switching from Layer 3 switching?

Layer 2 operates at the data link layer, while Layer 3 operates at the network layer Signup and view all the answers

Which command is used in ControlLogix to call a subroutine?

JSR Signup and view all the answers

What is the purpose of Static IP Addressing?

To assign a permanent IP address to a device Signup and view all the answers

Which tool is commonly used to ping another computer?

Command Prompt Signup and view all the answers

What does the Open Loop command do in RMC?

It allows control without feedback from sensors Signup and view all the answers

In DeviceNet, which device is typically mapped first when configuring new devices?

The controller Signup and view all the answers

What does the 'In Position' bit signify in RMC Win?

The actuator has successfully reached its target position Signup and view all the answers

Study Notes

Networking Basics

Multiple networks exist on-site, including specific networks for process control.
Layer 2 switching operates at the data link layer, forwarding data based on MAC addresses; Layer 3 switching operates at the network layer, forwarding data based on IP addresses.
A subnet mask is used to divide an IP address into a network and host portion, determining the network's size.
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses and configurations to devices on a network.

IP Addressing

Static IP addressing assigns a fixed IP to a device, ensuring consistent identification on a network.
Information on installed components and devices can be found in system settings or device manager on a PC.

Remote Access and Control

Remote PCs at Raymond can be connected via VPN, Remote Desktop Protocol (RDP), or terminal services.
An array is a data structure that can hold multiple values in a single variable, often used in programming.
A Dint (double integer) is a 32-bit data type used in programming for numerical values.
A Bool represents a boolean value (true/false) in programming.
A UDT (User-Defined Type) is a custom data structure created by users for specific needs in programming.

Networking Tools and Diagnostics

The ping command tests the connectivity between computers on a network by sending ICMP packets.
Pinging a computer is done to check if it is reachable and to measure response time.
Default Gateway serves as the access point for devices to communicate with external networks.

Control Systems

Two networks for process control at Raymond include DeviceNet and EtherNet/IP.
Specific communication cards are designated for VFDs (Variable Frequency Drives) in different protocols.
E3 devices identify active faults through built-in diagnostic capabilities.

Software and Configuration

Various Logix versions are utilized on-site for control systems and automation.
RMC (Robot Motion Control) Open Loop command sets operation without positional feedback.
RMC software settings, including extend and retract limits for cylinders, should be set conservatively.
Base IO tags in ControlLogix are structured with a specific syntax, found in the Controller Organizer of Studio-5000/RSLogix-5000.

ControlLogix Functionality

RPI (Requested Packet Interval) in ControlLogix denotes the time interval for communication packets.
A RED flashing "OK" LED on a ControlLogix Processor indicates a fault state.
ControlLogix tag names are limited to a specific number of characters, ensuring clarity and organization.
RSLinx software serves as a communication interface between PLCs and software applications.

Programming Logic

Deleting a rung containing a coil leaves the associated bit in an indeterminate state.
The DN (Done) bit for a TOF (Timer Off Delay) timer is set to 1 (on) while timing is active.
A latched coil maintains its last state even after the logic that activated it goes inactive, unlike a standard output energize coil.
Timers have a maximum preset value that depends on the time base utilized.
The RES (Reset) instruction is required for certain timer instructions to reset their state.
Accidental program logic edits are prevented in Allen-Bradley systems through safety measures to ensure system integrity.

Description

This quiz covers essential networking concepts, including network types, differences between Layer 2 and Layer 3 switching, DHCP addressing, and the purpose of static IP addressing. Additionally, it delves into fundamental programming concepts like arrays, data types, and understanding remote PC connections. Perfect for anyone looking to refresh their knowledge in networking and computer fundamentals.