欧姆龙SYSMAC CS/CJ系列通信命令手册

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"这是一份关于通信命令的参考资料，主要涵盖了FINS（Fieldbus Network System）和C_Mode两种通信协议，并且详细介绍了与之相关的欧姆龙（OMRON）系列CPU及通信模块的使用，如CS1G/H-CPU、CJ1G/H-CPU等。文档中还包含了安全警告信息，提醒用户在操作时必须遵循的安全规范，以防止人员伤害或财产损失。" 在工业自动化领域，通信是设备间交互和数据交换的关键。FINS通信协议是欧姆龙PLC（可编程逻辑控制器）系统中广泛使用的网络协议，它允许PLC与其他设备，如I/O模块、人机界面（HMI）、上位机等进行高效的数据交换。FINS协议支持多种传输层协议，如Ethernet/IP、RS-485以及CC-Link等，确保了在不同网络环境下的兼容性和灵活性。 C_Mode则可能是指欧姆龙PLC的一种通信模式，可能用于特定的通信配置或者特定功能的实现。在实际应用中，用户可能需要通过C_Mode来设定和控制PLC的通信参数，如波特率、数据位、停止位和校验方式等，以确保与其他设备的正确通信。文档中提到的CS1G/H-CPU和CJ1G/H-CPU是欧姆龙的CPU单元，它们是控制系统的核心，负责执行程序指令和处理输入/输出数据。CS1W-SCB21/41和CS1W-SCU21、CJ1W-SCU41则是对应的通信模块，这些模块扩展了PLC的通信能力，使其能够连接到各种不同的网络和设备。通信命令部分可能包括了读取和写入寄存器、发送和接收报文、设置网络参数以及诊断通信故障等内容。这部分内容对于理解和调试基于欧姆龙系统的自动化系统至关重要。在实际操作中，用户需要了解如何正确构造和解析FINS和C_Mode命令，以实现设备间的有效通信。安全警告部分强调了在操作过程中遵循安全规定的必要性。"DANGER"、"WARNING"和"Caution"分别代表了不同程度的安全风险，提示用户必须谨慎操作，避免可能引发的伤害或损失。这份文档对于那些需要处理欧姆龙PLC通信问题的工程师和技术人员来说，是一份极其有价值的参考资料，它提供了详尽的通信协议解释和实际操作指导。通过学习和理解这份资料，用户可以更有效地集成和维护他们的自动化系统。

SECTION 1

Introduction

This section introduces the C-mode commands and FINS commands, and explains the relationship between them.

1-1 Overview of Communications Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-2 C-mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-3 FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Overview of Communications Commands Section 1-1

1-1 Overview of Communications Commands

Communications Commands Addressed to CS/CJ-series PCs

A CS/CJ-series CPU Unit can receive the following communications com-

mands.

C-mode Commands C-mode commands are specialized Host Link communications commands.

They are issued by a host computer and sent to a CPU Unit. The devices that

can be connected for serial communications are the CPU Unit, a Serial Com-

munications Unit, and a Serial Communications Board.

FINS Commands FINS commands are message service communications commands. They do

not depend on a particular transmission path. They can be used for communi-

cations on various networks (Controller Link, Ethernet, etc.) and for serial

communications (Host Link). They can be issued from a CPU Unit, Special I/O

Unit, or host computer, and they can also be sent to any of these. The specific

commands that can be sent depend on the destination.

This manual explains commands sent to CS/CJ-series CPU Units, when the

commands are issued from a CPU Unit or a host computer connected by Host

Link.

Note When the source of the commands is a CPU Unit, the FINS commands are

sent by means of CMND(490)/SEND(090)/RECV(098). When the source is a

host computer, the FINS commands are issued using Host Link protocol.

1-2 C-mode Commands

The following table lists the C-mode (Host Link) commands. For details, refer

to SECTION 4 C-mode Commands.

Communications commands

C-mode commands via Host Link

FINS commands

Via CMND(490)/SEND(090)/RECV(098)

Via Host Link

Type Header

code

Name Function

I/O memory

reading

RR CIO AREA READ Reads the specified number of words beginning with

the designated CIO word.

RL LR AREA READ Reads the specified number of words beginning with

the designated LR word.

RH HR AREA READ Reads the specified number of words beginning with

the designated HR word.

RC TIMER/COUNTER PV READ Reads the specified number of words of the timer/

counter PV beginning with the designated word.

RG TIMER/COUNTER STATUS READ Reads the specified number of words of the timer/

counter status beginning with the designated word.

RD DM AREA READ Reads the specified number of words beginning with

the designated DM word.

RJ AR AREA READ Reads the specified number of words beginning with

the designated AR word.

RE EM AREA READ Reads the specified number of words beginning with

the designated EM word.

C-mode Commands Section 1-2

I/O memory

writing

WR CIO AREA WRITE Writes the specified data in word units beginning

with the designated CIO word.

WL LR AREA WRITE Writes the specified data in word units beginning

with the designated LR word.

WH HR AREA WRITE Writes the specified data in word units beginning

with the designated HR word.

WC TIMER/COUNTER PV WRITE Writes the specified timer/counter PV data in word

units beginning with the designated word.

WD DM AREA WRITE Writes the specified data in word units beginning

with the designated DM word.

WJ AR AREA WRITE Writes the specified data in word units beginning

with the designated AR word.

WE EM AREA WRITE Writes the specified data in word units beginning

with the designated EM word.

Timer/counter SV

reading

R# TIMER/COUNTER SV READ 1 Reads in four digits BCD the constant SV that is

written as an operand of the designated timer/

counter instruction.

R$ TIMER/COUNTER SV READ 2 Finds the specified timer/counter instruction, begin-

ning with the designated program address, and

reads the constant SV in four digits or the word in

which the SV is stored.

R% TIMER/COUNTER SV READ 3 Finds the specified timer/counter instruction, begin-

ning with the designated program address, and

reads the constant SV in four digits (BCD) or the

word in which the SV is stored.

Timer/counter SV

changing

W# TIMER/COUNTER SV CHANGE 1 Changes the SV of the specified timer/counter

instruction to a new constant SV.

W$ TIMER/COUNTER SV CHANGE 2 Finds the specified timer/counter instruction, begin-

ning with the designated program address in the

user program, and changes the constant SV in four

digits (BCD) or the word in which the SV is stored to

a new constant SV or storage word.

W% TIMER/COUNTER SV CHANGE 3 Finds the specified timer/counter instruction, begin-

ning with the designated program address in the

user program, and changes the constant SV in four

digits (BCD) or the word in which the SV is stored to

a new constant SV or storage word.

CPU Unit status MS STATUS READ Reads the CPU Unit’s operating conditions (operat-

ing mode, forced set/reset status, and fatal errors).

SC STATUS CHANGE Changes the CPU Unit’s operating mode.

MF ERROR READ Reads the CPU Unit’s error information (i.e., all fatal

or non-fatal errors currently in effect).

Forced

set/reset

KS FORCED SET Forcibly sets one designated bit.

KR FORCED RESET Forcibly resets one designated bit.

FK MULTIPLE FORCED SET/RESET Forcibly sets/resets/cancels multiple designated

bits.

KC FORCED SET/RESET CANCEL Cancels all forced set/reset status.

PC model code

reading

MM PC MODEL READ Reads the model code of the CPU Unit.

Testing TS TEST Returns, just as it is, a single block that was sent

from the host computer.

Type Header

code

Name Function

FINS Commands Section 1-3

1-3 FINS Commands

The following table lists the FINS commands. For details, refer to SECTION 5

FINS Commands.

Program area

accessing

RP PROGRAM READ Reads, in one batch, the contents of the CPU Unit’s

user program at the machine language (object)

level.

WP PROGRAM WRITE Writes into the CPU Unit’s user program area the

machine language (object) sent from the host com-

puter.

I/O table creation MI I/O TABLE CREATE Creates an I/O table with the contents of the actual

I/O configuration.

I/O memory area

registration and

reading

QQMR REGISTER I/O MEMORY Registers the I/O memory words or bits that are to

be read.

QQIR READ I/O MEMORY Reads the registered I/O memory words/bits all at

once.

Host Link commu-

nications

processing

XZ ABORT (command only) Aborts the operation being performed by a Host Link

command, and then returns to the initial status.

 INITIALIZE (command only) Initializes the transfer control procedures for all Host

Link Units.

IC Undefined command (response

only)

This is the response when the command header

code cannot be decoded.

Type Header

code

Name Function

Type Command

code

Name Function

MR SR

I/O memory area

access

01 01 MEMORY AREA READ Reads the contents of consecutive I/O

memory area words.

01 02 MEMORY AREA WRITE Writes the contents of consecutive I/O

memory area words.

01 03 MEMORY AREA FILL Writes the same data to the specified

range of I/O memory area words.

01 04 MULTIPLE MEMORY AREA READ Reads the contents of specified non-

consecutive I/O memory area words.

01 05 MEMORY AREA TRANSFER Copies the contents of consecutive I/O

memory area words to another I/O

memory area.

Parameter area

access

02 01 PARAMETER AREA READ Reads the contents of consecutive

parameter area words.

02 02 PARAMETER AREA WRITE Writes the contents of consecutive

parameter area words.

02 03 PARAMETER AREA FILL (CLEAR) Clears the specified range of parameter

area words.

Program area

access

03 06 PROGRAM AREA READ Reads the UM (User Memory) area.

03 07 PROGRAM AREA WRITE Writes to the UM (User Memory) area.

03 08 PROGRAM AREA CLEAR Clears a specified range of the UM

(User Memory) area.

Operating mode

changes

04 01 RUN Changes the CPU Unit’s operating

mode to RUN or MONITOR.

04 02 STOP Changes the CPU Unit’s operating

mode to PROGRAM.

Machine configura-

tion reading

05 01 CPU UNIT DATA READ Reads CPU Unit data.

05 02 CONNECTION DATA READ Reads the model numbers of the device

corresponding to addresses.

FINS Commands Section 1-3

Status reading 06 01 CPU UNIT STATUS READ Reads the status of the CPU Unit.

06 20 CYCLE TIME READ Reads the maximum, minimum, and

average cycle time.

Time data access 07 01 CLOCK READ Reads the present year, month, date,

minute, second, and day of the week.

07 02 CLOCK WRITE Changes the present year, month, date,

minute, second, or day of the week.

Message display 09 20 MESSAGE READ/CLEAR Reads and clears messages, and reads

FAL/FALS messages.

Access rights 0C 01 ACCESS RIGHT ACQUIRE Acquires the access right as long as no

other device holds it.

0C 02 ACCESS RIGHT FORCED ACQUIRE Acquires the access right even if

another device already holds it.

0C 03 ACCESS RIGHT RELEASE Releases the access right that has been

acquire.

Error log 21 01 ERROR CLEAR Clears errors or error messages.

21 02 ERROR LOG READ Reads the error log.

21 03 ERROR LOG CLEAR Clears all error log records.

File memory 22 01 FILE NAME READ Reads file device data.

22 02 SINGLE FILE READ Reads a specified length of file data

from a specified position within a single

file.

22 03 SINGLE FILE WRITE Writes a specified length of file data

from a specified position within a single

file.

22 04 FILE MEMORY FORMAT Formats (initializes) the file device.

22 05 FILE DELETE Deletes specified files stored in the file

device.

22 07 FILE COPY Copies files from one file device to

another file device in the same system.

22 08 FILE NAME CHANGE Changes a file name.

22 0A MEMORY AREA–FILE TRANSFER Transfers or compares data between the

I/O memory area and the file device.

22 0B PARAMETER AREA–FILE TRANSFER Transfers or compares data between the

parameter area and the file device.

22 0C PROGRAM AREA–FILE TRANSFER Transfers or compares data between the

UM (User Memory) area and the file

device.

22 15 DIRECTORY CREATE/DELETE Creates or deletes a directory.

Debugging 23 01 FORCED SET/RESET Force-sets or force-resets bits, or

releases force-set status.

23 02 FORCED SET/RESET CANCEL Cancels all bits that have been force-set

or force-reset.

Type Command

code

Name Function

MR SR

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