Omron SYSMAC CV Series User Manual

!
156
Because in this example the SV for C0001 is 700, the Completion Flag for C0002
turns ON when 1 second x 700 times, or 11 minutes and 40 seconds, have ex-
pired. This would result in 000202 being turned ON.
Address Instruction
00000 LD 000000
00001 AND A50102
00002 LD NOT 000001
00003 CNT 0001
#0700
00004 LD C00001
00005 OUT 000202
Operands
0000
00
0000
01
C000
01
0002
02
A501
02
CNT 0001 #0700
CP
R
Caution The shorter clock pulses will not necessarily produce accurate timers because
their short ON times might not be read accurately during longer cycles. In partic-
ular, the 0.02-second and 0.1-second clock pulses should not be used to create
timers.
5-13-7 REVERSIBLE COUNTER: CNTR(012)
(012)
CNTR N S
S: Set value CIO, G, A, T, C, #, DM, DR, IR
*Refer to page 141 for details on indirectly addressing
counters.
N: Counter number #
Operand Data AreasLadder Symbol
II
DI
R
Description The CNTR(012) is a reversible, up/down circular counter, i.e., it is used to count
between zero and SV according to changes in two execution conditions, those
on the increment input (II) and those in the decrement input (DI).
The present value (PV) will be incremented by one whenever CNTR(012) is
executed with an ON execution condition for II and the last execution condition
for II was OFF. The present value (PV) will be decremented by one whenever
CNTR(012) is executed with an ON execution condition for DI and the last
execution condition for DI was OFF. If OFF to ON changes have occurred in both
II and DI since the last execution, the PV will not be changed.
If the execution conditions have not changed or have changed from ON to OFF
for both II and DI, the PV of CNTR(012) will not be changed.
When decremented below 0000, the present value is set to SV and the Comple-
tion Flag is turned ON until the PV is decremented again. When incremented
above SV, the PV is set to 0000 and the Completion Flag is turned ON until the
PV is incremented again.
CNTR(012) is reset with a reset input, R. When R goes from OFF to ON, the PV
is reset to zero. The PV will not be incremented or decremented while R is ON.
Counting will begin again when R goes OFF. The PV for CNTR(012) will not be
reset in interlocked program sections or by power interruptions.
Timer and Counter Instructions Section 5-13

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.