OMRON C120-LK202-EV1/C120LK202EV1



OMRON C120-LK202-EV1

CPU Capabilities

The C200H-CPU21-E/CPU23-E/CPU31-E CPUs are based on the C200H

CPU11-E CPU, except only the CPU31-E supports Network Instructions. All of

the CPUs covered in this manual also support a group of High-density I/O Units

called Group-2 High-density I/O Units. Group-2 High-density I/O Units are clas

sified by themselves and are not classified as Special I/O Units.

The following table lists the capabilities of the various C200H CPUs.

Function CPU01-E CPU03-E CPU11-E CPU21-E CPU23-E CPU31-E

Compatible with Group-2 High-density I/O Units

(C200H-ID216/ID217/OD218/OD219)

No No No Yes Yes Yes

Can process GROUP-2 HIGH-DENSITY I/O

REFRESH – MPRF(61)

No No No Yes Yes Yes

Compatible with C200H-MR433/MR833/ME432

Memory Units

Yes1 Yes1 Yes1 Yes Yes Yes1

Compatible with C200H-ME832 Memory Unit No No No Yes Yes Yes1

Error history No No Yes Yes Yes Yes

Clock/calendar No No Yes Yes2 Yes2 Yes

Forced Status Hold Bit (SR 25211) No No Yes Yes Yes Yes

Can set TERMINAL mode for Programming

Console

No No Yes Yes Yes Yes

Additional instructions:

REVERSIBLE WORD SHIFT – RWS(17)

CYCLE TIME – SCAN(18)

MULTI-WORD COMPARE – MCMP(19)

LONG MESSAGE – LMSG(47)

TERMINAL MODE – TERM(48)

SET SYSTEM – SET(49)

DOUBLE COMPARE – CMPL(60)

COLUMN-TO-WORD – CTW(63)

WORD-TO-COLUMN – WTC(64)

HOURS-TO-SECONDS – HTS(65)

SECONDS-TO-HOURS – STH(66)

VALUE CALCULATE – VCAL(69)

No No Yes Yes Yes Yes

Network Instructions:

NETWORK SEND – SEND(90)

NETWORK RECEIVE – RECV(98)

No No Yes No No Yes

Power Supply AC DC AC AC DC AC

Note 1.The C200H-CPU01-E/CPU03-E cannot use the Memory Units’ clock, and

the C200H-CPU11-E/CPU31-E CPUs have a built-in clock.

2.The C200H-CPU21-E/CPU23-E can use the C200H-MR433/MR833/

ME432/ME832 Memory Units’ clock.

Introduction

Details, including the name, acronym, range, and function of each area are sum

marized in the following table. All but the last three of these areas are data areas.

Data and memory areas are normally referred to by their acronyms.

Area Acronym Range Function

Internal Relay IR Words: 000 to 235

Bits: 0000 to 23515

Used to control I/O points, other bits, timers,

and counters, and to temporarily store data.

Special Relay SR Words: 236 to 255

Bits: 23600 to 25507

Contains system clocks, flags, control bits, and

status information.

Auxiliary Relay AR Words: AR 00 to AR 27

Bits: AR 00 to AR 2715

Contains flags and bits for special functions.

Retains status during power failure.

Data Memory DM Read/write: DM 0000 to DM 0999

Read only: DM 1000 to DM 1999

Used for internal data storage and manipula

tion.

Holding Relay HR Words: HR 00 to HR 99

Bits: HR 0000 to HR 9915

Used to store data and to retain the data values

when the power to the PC is turned off.

Timer/Counter TC TC 000 to TC 511 (TC numbers used

to access other information)

Used to define timers and counters, and to ac

cess completion flags, PV, and SV. In general,

when used as a bit operand, a TC number ac

cesses the completion flag for the timer or

counter defined using the TC number. When

used as a word operand, the TC number ac

cesses the present value of the timer or count

er.Link Relay LR Words: LR 00 to LR 63

Bits: LR 0000 to 6315

Available for use as work bits.

Temporary Relay TR TR 00 to TR 07 (bits only) Used to temporarily store and retrieve execu

tion conditions. These bits can only be used in

the Load and Output instructions. Storing and

retrieving execution conditions is necessary

when programming certain types of branching

ladder diagrams.

Program Memory UM UM: Depends on Memory Unit used. Contains the program executed by the CPU.

When some bits and words in certain data areas are not being used for their in

tended purpose, they can be used in programming as required to control other

bits. Words and bits available for use in this fashion are called work words and

work bits. Most, but not all, unused bits can be used as work bits. Those that can

be used are described area-by-area in the remainder of this section. Actual ap

plication of work bits and work words is described in Section 4 Writing and Input

ting the Program.

Some data areas contain flags and/or control bits. Flags are bits that are auto

matically turned ON and OFF to indicate particular operation status. Although

some flags can be turned ON and OFF by the user, most flags are read only; they

cannot be controlled directly.

Control bits are bits turned ON and OFF by the user to control specific aspects of

operation. Any bit given a name using the word bit rather than the word flag is a

control bit, e.g., Restart bits are control bits.