Omron CQM1H - PROGRAM User Manual

35
Interrupt Functions Section 1-4
Note One of the methods in the following section should always be used to reset
the counter when restarting it. The counter will be automatically reset when
program execution is started or stopped.
The following signal transitions are handled as forward (incrementing) pulses:
phase-A leading edge to phase-B leading edge to phase-A trailing edge to
phase-B trailing edge. The following signal transitions are handled as reverse
(decrementing) pulses: phase-B leading edge to phase-A leading edge to
phase-B trailing edge to phase-A trailing edge.
The count range is from –32,767 to 32,767 for differential phase mode, and
from 0 to 65,535 for Incrementing Mode. Pulse signals can be counted at up
to 2.5 kHz in differential phase mode, and up to 5.0 kHz in incrementing
mode.
The differential phase mode always uses a 4X phase-difference input. The
number of counts for each encoder revolution would be 4 times the resolution
of the counter. Select the encoder based on the countable ranges.
Reset Methods
Either of the two methods described below may be selected for resetting the
PV of the count (i.e., setting it to 0).
Note The High-speed Counter 0 Reset Bit (SR 25200) is refreshed once every
cycle, so in order for it to be read reliably it must be ON for at least one cycle.
The “Z” in “phase-Z” is an abbreviation for “Zero.” It is a signal that shows that
the encoder has completed one cycle.
1234567876543210−1 −2
1 2 3 4
Phase-A
Phase-B
Differential phase mode
Count
Incremented Decremented
Count
Pulse
input
Incrementing mode
Incremented only
Method Operation
Phase-Z signal
+ software reset
The PV is reset when the phase-Z signal (reset input) turns ON
after the High-speed Counter 0 Reset Bit (SR 25200) is turned ON.
Software reset The PV is reset when the High-speed Counter 0 Reset Bit
(SR 25200) is turned ON.
SR25200
Phase-Z
(reset input)
Phase-Z signal + software reset
1 or more cycles
1 or more cycles
Reset by interrupt.
Within 1 cycle
Reset by cycle. Not reset. Reset by cycle.
Within 1 cycle
1 or more cycles
Software reset
SR25200

Omron CQM1H - PROGRAM Specifications

General

I/O Capacity	Up to 512 points
Power Supply	100 to 240 VAC, 50/60 Hz or 24 VDC (depending on model)
Instruction Set	Basic and advanced instructions
Operating Temperature	0 to 55°C
Program Capacity	7.2K to 15.2K steps
Communication Ports	RS-232C
Expansion Slots	Up to 3 expansion units
Type	Programmable Logic Controller (PLC)
CPU Type	RISC
Program Memory	7.2K to 15.2K steps
I/O Points	512 max
Expansion Capability	Up to 3 expansion units
Data Memory	RAM (battery backup)

Summary

PRECAUTIONS

1 Intended Audience

Specifies the target personnel for this manual, requiring knowledge of electrical systems and FA systems.

2 General Precautions

Outlines user responsibilities for operating the product according to specifications and consulting representatives for specific applications.

3 Safety Precautions

Details critical safety warnings related to I/O refreshing, touching internal components, disassembly, and power supply handling.

5 Application Precautions

Provides essential safety guidelines for using the PC System, including grounding, power handling, and unit mounting.

SECTION 1 PC Setup and Other Features

1-1 PC Setup

Explains operating parameters for CQM1H control, including default values and how to change them.

SECTION 2 Inner Boards

2-1 High-speed Counter Board

Describes the functions, input modes, comparison operations, and external outputs of the High-speed Counter Board.

2-2 Pulse I/O Board

Details the Pulse I/O Board's support for two pulse inputs and two pulse outputs, including input modes and interrupts.

SECTION 3 Memory Areas

3-1 Memory Area Structure

Explains the memory areas used by the CQM1H PC, including IR, Work, Controller Link status, MACRO operand, Inner Board, Analog, High-speed Counter, and EM areas.

SECTION 4 Ladder-diagram Programming

4-1 Basic Procedure

Outlines the fundamental steps for writing a program, including obtaining I/O lists and drawing ladder diagrams.

4-4 Controlling Bit Status

Details instructions for controlling individual bit status: OUTPUT, OUTPUT NOT, SET, RESET, DIFFERENTIATE UP/DOWN, KEEP.

4-6 Programming Precautions

Provides essential precautions for drawing clear ladder diagrams and inputting programs, emphasizing instruction order and TR bits.

4-7 Program Execution

Describes the CPU Unit's program scan from top to bottom, checking conditions, and executing instructions.

SECTION 5 Instruction Set

SECTION 6 Host Link Commands

6-1 Host Link Command Summary

Provides a summary table of Host Link commands available for CQM1H communications.

6-4 Command and Response Formats

Details the formats for commands issued from the host computer and responses received from the PC.

6-5 Host Link Commands

Lists and describes various Host Link commands for reading and writing data in IR, SR, LR, HR, DM, EM, and AR areas.

SECTION 7 CPU Unit Operation and Processing Time

7-1 CPU Unit Operation

Explains the overall operation flowchart of the CQM1H CPU Unit and defines cycle time.

7-2 Power Interruptions

Details the CPU Unit's behavior during power interruptions and momentary power supply failures.

7-3 Cycle Time

Explains the processes involved in a single execution cycle and their respective processing times.

SECTION 8 Troubleshooting

8-2 Programming Console Operation Errors

Lists common error messages encountered when using the Programming Console and their appropriate responses.

8-3 Programming Errors

8-5 Operating Errors

8-6 Error Log

8-7 Troubleshooting Flowcharts

Appendix A Programming Instructions

5-8 Ladder Diagram Instructions

Explains basic instructions like LOAD, AND, OR, and their combinations, including logic block instructions.

5-9 Bit Control Instructions

Covers instructions for controlling individual bit status: OUT, OUT NOT, SET, RESET, DIFU, DIFD, KEEP.

5-14 User Error Instructions: FAILURE ALARM AND RESET – FAL(06) and SEVERE FAILURE ALARM – FALS(07)

Describes instructions for outputting error numbers for operation, maintenance, and debugging, including non-fatal and fatal errors.

5-16 Timer and Counter Instructions

Details instructions for managing timers and counters, including TIM, TIMH, CNT, CNTR, TTIM, STIM, and CTBL.

5-29 Network Instructions

Explains instructions for communicating with other PCs via the Controller Link System, including SEND, RECV, and CMND.

5-30 Communications Instructions

Details instructions for serial communications, including RECEIVE (RXD), TRANSMIT (TXD), CHANGE SERIAL PORT SETUP (STUP), and PROTOCOL MACRO (PMCR).