Omron SYSMAC CV Series User Manual

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Glossary
action In SFC programs, the individual executable elements in an action block. An ac-
tion can be defined either as a ladder diagram or as a single bit in memory.
Action Area A memory area that contains flags that indicate when actions are active.
action block A collection of all the actions for a single step in an SFC program. Each action is
accompanied by its action qualifier, set value, and feedback variable.
action number A number assigned to an action. Each action has a unique number. These num-
bers are used to access and to control the status of the action.
action program A ladder diagram program written to define an action.
action qualifier A designation made for a action to control when the action is to be executed in
respect to the status of the step.
active status One of the two main statuses that a step can be in. Active status includes pause,
halt, and execute status.
active step A step that is in either pause, halt, or execute status. There can be more than one
active step.
address A number used to identify the location of data or programming instructions in
memory or to identify the location of a network or a unit in a network.
advanced instruction An instruction input with a function code that handles data processing opera-
tions within ladder diagrams, as opposed to a basic instruction, which makes up
the fundamental portion of a ladder diagram.
allocation The process by which the PC assigns certain bits or words in memory for various
functions. This includes pairing I/O bits to I/O points on Units.
analog Something that represents or can process a continuous range of values as op-
posed to values that can be represented in distinct increments. Something that
represents or can process values represented in distinct increments is called
digital.
Analog I/O Unit I/O Units that convert I/O between analog and digital values. An Analog Input
Input converts an analog input to a digital value for processing by the PC. An
Analog Output Unit converts a digital value to an analog output.
AND A logic operation whereby the result is true if and only if both premises are true.
In ladder-diagram programming the premises are usually ON/OFF states of bits
or the logical combination of such states called execution conditions.
AQ See action qualifier .
area See data area and memory area .
area prefix A one or two letter prefix used to identify a memory area in the PC. All memory
areas except the CIO area require prefixes to identify addresses in them.
arithmetic shift A shift operation wherein the carry flag is included in the shift.

Omron SYSMAC CV Series Specifications

General

Series	SYSMAC CV Series
Type	PLC
Input Voltage	100 to 240 VAC, 24 VDC
Number of Inputs	Varies by model
Number of Outputs	Varies by model
I/O Capacity	Up to 2048 points
I/O Points	Varies by model
Communication Ports	RS-232C, RS-422/485
Programming Language	Ladder Logic
Power Supply	100-240V AC or 24V DC
Mounting	DIN rail mounting
Operating Temperature	0°C to 55°C

Summary

PRECAUTIONS

2 General Precautions

User must operate product per specifications; consult OMRON for non-manual conditions or critical systems.

3 Safety Precautions

Precautions regarding power supply, terminal touching, disassembly, repair, and battery handling.

4 Operating Environment Precautions

Guidelines for environmental conditions for PC system installation and operation.

5 Application Precautions

Precautions for safe PC system usage, grounding, power supply, wiring, and program changes.

SECTION 1 Introduction

1-5 Overview of PC Operation

1-6 PC Operating Modes

SECTION 2 Hardware Considerations

2-1 CPU Components

2-2 Program Memory

2-3 Memory Cards

Covers file memory used to store programs and other data, including RAM, EPROM, and EEPROM types.

2-7 PC Configuration

Provides an overview of the PC configuration, including CPU Rack, Expansion CPU Rack, and Expansion I/O Rack.

SECTION 3 Memory Areas

3-2 Data Area Structure

Describes two sets of addresses for accessing PC memory: data area addresses and memory addresses.

3-3 CIO (Core I/O) Area

Details CIO Area addresses, divided into eight data areas for I/O control and internal data manipulation.

3-6 Auxiliary Area

Contains flags and control bits for monitoring and controlling PC operation, accessing clock pulses, and signaling errors.

3-11 DM and EM Areas

SECTION 4 Writing Programs

4-1 Basic Procedure

Outlines basic steps for writing a program, including I/O device list and work bit allocation.

4-3 Basic Ladder Diagrams

Describes ladder diagrams, which consist of vertical lines (bus bars) and branching lines (instruction lines or rungs).

4-4 Mnemonic Code

4-7 Controlling Bit Status

Lists instructions used to control individual bit status, such as OUTPUT, SET, RESET, and KEEP.

4-10 Programming Precautions

Provides guidelines on programming practices, such as unlimited conditions in series or parallel and avoiding vertical conditions.

4-11 Program Execution

SECTION 5 Instruction Set

5-2 Instruction Format

5-3 Data Areas, Definers, and Flags

5-6 Ladder Diagram Instructions

Covers instructions that correspond to ladder diagram conditions and logic block instructions for complex relationships.

5-7 Bit Control Instructions

Explains instructions used to control bit status by turning bits ON and OFF in different ways.

5-8 INTERLOCK and INTERLOCK CLEAR: IL(002) and ILC(003)

5-9 JUMP and JUMP END: JMP(004) and JME(005)

5-10 CONDITIONAL JUMP: CJP(221)/CJPN(222)

5-13 Timer and Counter Instructions

Details instructions for creating timers and counters, accessing PVs and Completion Flags.

5-14 Shift Instructions

5-15 Data Movement Instructions

Explains instructions used for moving data between different addresses in data areas.

5-16 Comparison Instructions

Covers instructions used for comparing data, affecting comparison flags and outputting results.

5-17 Conversion Instructions

Explains instructions that convert word data from one format to another, outputting converted data to specified result words.

SECTION 6 Program Execution Timing

6-1 PC Operation

6-2 Cycle Time

Explains operations affecting cycle time and I/O response time, and shows basic cycle time calculation.

6-3 Calculating Cycle Time

6-4 Instruction Execution Times

6-5 I/O Response Time

Explains the time taken for the PC to output a control signal after receiving an input signal.

SECTION 7 PC Setup

7-1 PC Setup Overview

7-2 PC Setup Details

7-3 PC Setup Default Settings

SECTION 8 Error Processing

8-1 Alarm Indicators

8-2 Programmed Alarms and Error Messages

8-3 Reading and Clearing Errors and Messages

8-4 Error Messages

Classifies errors into initialization, non-fatal operating, and fatal operating errors for message display.

8-5 Error Flags

Appendices

A Instruction Set

Details all ladder diagram programming instructions, variations, and applicable data areas.

B Error and Arithmetic Flag Operation

Explains instructions affecting ER, CY, GR, LE, EQ, OF, UF, and N flags.

C PC Setup Default Settings

Lists default values for PC Setup parameters.

D Data Areas

Summarizes data areas in CV-series PCs, including CIO, Temporary Relay, and Auxiliary Areas.