Omron NJ501-1500 User manual

Machine Automation Controller
NJ-series
Instructions Reference Manual
W502-E1-01
NJ501-1300
NJ501-1400
NJ501-1500

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, or
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of
OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is
constantly striving to improve its high-quality products, the information contained in this manual is subject to change without
notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no responsibility
for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained in
this publication.
OMRON, 2011

1
Introduction
NJ-series Instructions Reference Manual (W502)
Introduction
Thank you for purchasing an NJ-series CPU Unit.
This manual contains information that is necessary to use the NJ-series CPU Unit. Please read this
manual and make sure you understand the functionality and performance of the NJ-series CPU Unit
before you attempt to use it in a control system.
Keep this manual in a safe place where it will be available for reference during operation.
This manual is intended for the following personnel, who must also have knowledge of electrical sys-
tems (an electrical engineer or the equivalent).
•Personnel in charge of introducing FA systems.
•Personnel in charge of designing FA systems.
•Personnel in charge of installing and maintaining FA systems.
•Personnel in charge of managing FA systems and facilities.
For programming, this manual is intended for personnel who understand the programming language
specifications in international standard IEC 61131-3 or Japanese standard JIS B3503.
This manual covers the following products.
•NJ-series CPU Units
•NJ501-1300
•NJ501-1400
•NJ501-1500
Intended Audience
Applicable Products

Relevant Manuals
2NJ-series Instructions Reference Manual (W502)
Relevant Manuals
There are three manuals that provide basic information on the NJ-series CPU Units: the NJ-series CPU
Unit Hardware User’s Manual, the NJ-series CPU Unit Software User’s Manual (this manual), and the
NJ-series Instructions Reference Manual.
Most operations are performed from the Sysmac Studio Automation Software. Refer to the Sysmac Stu-
dio Version 1 Operation Manual (Cat. No. W504) for information on the Sysmac Studio.
Other manuals are necessary for specific system configurations and applications.
Read all of the manuals that are relevant to your system configuration and application to make the most
of the NJ-series CPU Unit.
NJ-series User’s Manuals
Basic information
Introduction to NJ-series Controllers
Setting devices and hardware
Using motion control
Using EtherCAT
Using EtherNet/IP
Using CJ-series Units
Software settings
Using motion control
Using EtherCAT
Using EtherNet/IP
Programming
Using motion control
Using EtherCAT
Using CJ-series Units
Programming error processing
Testing operation and debugging
Using motion control
Using EtherCAT
Using EtherNet/IP
Maintenance
Using EtherCAT
Using EtherNet/IP
Using CJ-series Units
NJ-series CPU Unit Hardware User´s Manual NJ-series CPU Unit Software User´s Manual NJ-series Instructions Reference Manual NJ-series CPU Unit Motion Control User´s Manual
NJ-series CPU Unit Built-in EtherCAT Port User´s Manual
NJ-series Motion Control Instructions Reference Manual
NJ-series CPU Unit Built-in EtherNet/IP Port User´s Manual NJ-series Troubleshooting Manual CJ-series Special Unit Operation Manuals for NJ-series CPU Unit
Troubleshooting and managing
errors in an NJ-series Controller
Use the
relevant
manuals for
references
according to
any error that
occurs.

3
Manual Configuration
NJ-series Instructions Reference Manual (W502)
Manual Configuration
NJ-series CPU Unit Hardware User’s Manual (Cat. No. W500)
Section Description
Section 1
Introduction
This section provides an introduction to the NJ-series Controllers and their features,
and gives the NJ-series Controller specifications.
Section 2
System Configuration
This section describes the system configuration used for NJ-series Controllers.
Section 3
Configuration Units
This section describes the parts and functions of the configuration devices in the NJ-
series Controller configuration, including the CPU Unit and Configuration Units.
Section 4
Installation and Wiring
This section describes where and how to install the CPU Unit and Configuration Units
and how to wire them.
Section 5
Troubleshooting
This section describes the event codes, error confirmation methods, and corrections
for errors that can occur.
Section 6
Inspection and Maintenance
This section describes the contents of periodic inspections, the service life of the Bat-
tery and Power Supply Units, and replacement methods for the Battery and Power
Supply Units.
Appendices
The appendices provide the specifications of the Basic I/O Units, Unit dimensions,
load short-circuit protection detection, line disconnection detection, and measures for
EMC Directives.
NJ-series CPU Unit Software User’s Manual (Cat. No. W501)
Section Description
Section 1
Introduction
This section provides an introduction to the NJ-series Controllers and their features,
and gives the NJ-series Controller specifications.
Section 2
CPU Unit Operation
This section describes the variables and control systems of the CPU Unit and CPU
Unit status.
Section 3
I/O Ports, Slave Configuration, and
Unit Configuration
This section describes how to use I/O ports, how to create the slave configuration
and unit configuration and how to assign functions.
Section 4
Controller Setup
This section describes the initial settings of the function modules.
Section 5
Designing Tasks
This section describes the task system and types of tasks.
Section 6
Programming
This section describes programming, including the programming languages and the
variables and instructions that are used in programming.
Section 7
Simulation, Transferring Projects to
the Physical CPU Unit, and Opera-
tion
This section describes simulation of Controller operation and how to use the results
of simulation.
Section 8
CPU Unit Status
This section describes CPU Unit status.
Section 9
CPU Unit Functions
This section describes the functionality provided by the CPU Unit.
Section 10
Communications Setup
This section describes how to go online with the CPU Unit and how to connect to
other devices.
Section 11
Example of Actual Application Pro-
cedures
This section describes the procedures that are used to actually operate an NJ-series
Controller.
Section 12
Troubleshooting
This section describes the event codes, error confirmation methods, and corrections
for errors that can occur.
Appendices
The appendices provide the CPU Unit specifications, task execution times, system-
defined variable lists, data attribute lists, CJ-series Unit memory information, CJ-
series Unit memory allocation methods, and data type conversion information.

Manual Configuration
4NJ-series Instructions Reference Manual (W502)
NJ-series Instructions Reference Manual (Cat. No. W502)
(This Manual)
Section Description
Section 1
Instruction Set
This section provides a table of the instructions that are described in this manual.
Section 2
Instruction Descriptions
This section describes instruction specifications in detail.
Appendices The appendices provide a table of error codes and other supplemental information to
use instructions.

5
Sections in this Manual
NJ-series Instructions Reference Manual (W502)
Sections in this Manual
1
2
A
1
2
A
I
Instruction Set
Instruction Descriptions
Appendices
IIndex

Sections in this Manual
6NJ-series Instructions Reference Manual (W502)

7
NJ-series Instructions Reference Manual (W502)
CONTENTS
CONTENTS
Introduction............................................................................................................... 1
Relevant Manuals...................................................................................................... 2
Manual Configuration............................................................................................... 3
Sections in this Manual............................................................................................ 5
Read and Understand this Manual........................................................................ 15
Safety Precautions ................................................................................................. 19
Precautions for Safe Use ....................................................................................... 20
Precautions for Correct Use .................................................................................. 21
Regulations and Standards ................................................................................... 22
Unit Versions........................................................................................................... 24
Related Manuals ..................................................................................................... 27
Revision History ..................................................................................................... 29
Section 1 Instruction Set
Instruction Set ........................................................................................................... 1-2
Section 2 Instruction Descriptions
Using this Section ...................................................................................................... 2-2
Ladder Diagram Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
LD and LDN ............................................................................................................. 2-14
AND and ANDN ....................................................................................................... 2-16
OR and ORN ........................................................................................................... 2-18
Out and OutNot ....................................................................................................... 2-20
ST Statement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
IF .............................................................................................................................2-24
CASE ....................................................................................................................... 2-28
WHILE ..................................................................................................................... 2-32
REPEAT .................................................................................................................. 2-34
RETURN ................................................................................................................. 2-36
FOR ......................................................................................................................... 2-37
EXIT ........................................................................................................................ 2-38
Sequence Input Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
R_TRIG (Up) and F_TRIG (Down) .......................................................................... 2-40
TestABit and TestABitN ........................................................................................... 2-43
Sequence Output Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
RS ........................................................................................................................... 2-46
SR ........................................................................................................................... 2-48
Set and Reset .......................................................................................................... 2-50
SetBits and ResetBits .............................................................................................. 2-53
SetABit and ResetABit ............................................................................................ 2-55

8NJ-series Instructions Reference Manual (W502)
CONTENTS
OutABit .................................................................................................................... 2-57
Sequence Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-59
End .......................................................................................................................... 2-60
RETURN ................................................................................................................. 2-61
MC and MCR ........................................................................................................... 2-62
JMP ......................................................................................................................... 2-74
FOR and NEXT ....................................................................................................... 2-76
BREAK .................................................................................................................... 2-81
Comparison Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-83
EQ (=) ...................................................................................................................... 2-84
NE (<>) .................................................................................................................... 2-86
LT (<), LE (<=), GT (>), and GE (>=) ...................................................................... 2-88
EQascii .................................................................................................................... 2-91
NEascii .................................................................................................................... 2-93
LTascii, LEascii, GTascii, and GEascii .................................................................... 2-95
Cmp ......................................................................................................................... 2-98
ZoneCmp ............................................................................................................... 2-100
TableCmp .............................................................................................................. 2-102
AryCmpEQ and AryCmpNE .................................................................................. 2-105
AryCmpLT, AryCmpLE, AryCmpGT, and AryCmpGE ........................................... 2-107
AryCmpEQV and AryCmpNEV ............................................................................. 2-110
AryCmpLTV, AryCmpLEV, AryCmpGTV, and AryCmpGEV ................................. 2-112
Timer Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-115
TON ....................................................................................................................... 2-116
TOF ....................................................................................................................... 2-120
TP .......................................................................................................................... 2-123
AccumulationTimer ................................................................................................ 2-126
Timer ..................................................................................................................... 2-129
Counter Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-133
CTD ....................................................................................................................... 2-134
CTD_** .................................................................................................................. 2-136
CTU ....................................................................................................................... 2-138
CTU_** .................................................................................................................. 2-140
CTUD .................................................................................................................... 2-142
CTUD_** ................................................................................................................ 2-146
Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-151
ADD (+) ................................................................................................................. 2-152
AddOU (+OU) ........................................................................................................ 2-154
SUB (-) .................................................................................................................. 2-156
SubOU (-OU) ......................................................................................................... 2-158
MUL (*) .................................................................................................................. 2-161
MulOU (*OU) ......................................................................................................... 2-163
DIV (/) .................................................................................................................... 2-166
MOD ...................................................................................................................... 2-168
ABS ....................................................................................................................... 2-170
RadToDeg and DegToRad .................................................................................... 2-172
SIN, COS, and TAN .............................................................................................. 2-174
ASIN, ACOS, and ATAN ....................................................................................... 2-177
SQRT .................................................................................................................... 2-180
LN and LOG .......................................................................................................... 2-182
EXP ....................................................................................................................... 2-185
EXPT (**) ............................................................................................................... 2-187
Inc and Dec ........................................................................................................... 2-189
Rand ...................................................................................................................... 2-191
AryAdd ................................................................................................................... 2-193
AryAddV ................................................................................................................ 2-195
ArySub ................................................................................................................... 2-197
ArySubV ................................................................................................................ 2-199

9
NJ-series Instructions Reference Manual (W502)
CONTENTS
AryMean ................................................................................................................ 2-201
ArySD .................................................................................................................... 2-203
ModReal ................................................................................................................ 2-205
Fraction ................................................................................................................. 2-207
CheckReal ............................................................................................................. 2-209
BCD Conversion Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-211
**_BCD_TO_*** ..................................................................................................... 2-212
**_TO_BCD_*** ..................................................................................................... 2-215
BCD_TO_** ........................................................................................................... 2-218
BCDsToBin ............................................................................................................ 2-221
BinToBCDs_** ....................................................................................................... 2-224
AryToBCD ............................................................................................................. 2-227
AryToBin ................................................................................................................ 2-229
Data Type Conversion Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-231
**_TO_*** (Integer-to-Integer Conversion Group) ................................................. 2-232
**_TO_*** (Integer-to-Bit String Conversion Group) .............................................. 2-235
**_TO_*** (Integer-to-Real Number Conversion Group) ....................................... 2-237
**_TO_*** (Bit String-to-Integer Conversion Group) .............................................. 2-239
**_TO_*** (Bit String-to-Bit String Conversion Group) .......................................... 2-242
**_TO_*** (Bit String-to-Real Number Conversion Group) .................................... 2-244
**_TO_*** (Real Number-to-Integer Conversion Group) ....................................... 2-246
**_TO_*** (Real Number-to-Bit String Conversion Group) .................................... 2-249
**_TO_*** (Real Number-to-Real Number Conversion Group) ............................. 2-251
**_TO_STRING (Integer-to-Text String Conversion Group) ................................. 2-253
**_TO_STRING (Bit String-to-Text String Conversion Group) .............................. 2-255
**_TO_STRING (Real Number-to-Text String Conversion Group) ....................... 2-257
RealToFormatString .............................................................................................. 2-259
LrealToFormatString ............................................................................................. 2-264
STRING_TO_** (Text String-to-Integer Conversion Group) ................................. 2-270
STRING_TO_** (Text String-to-Bit String Conversion Group) .............................. 2-272
STRING_TO_** (Text String-to-Real Number Conversion Group) ....................... 2-274
TO_** (Integer Conversion Group) ........................................................................ 2-277
TO_** (Bit String Conversion Group) .................................................................... 2-279
TO_** (Real Number Conversion Group) .............................................................. 2-281
TRUNC, Round, and RoundUp ............................................................................. 2-283
Bit String Processing Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-285
AND (&), OR, and XOR ......................................................................................... 2-286
XORN .................................................................................................................... 2-289
NOT ....................................................................................................................... 2-291
AryAnd, AryOr, AryXor, and AryXorN .................................................................... 2-293
Selection Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-297
SEL ........................................................................................................................ 2-298
MUX ...................................................................................................................... 2-300
LIMIT ..................................................................................................................... 2-302
Band ...................................................................................................................... 2-304
Zone ...................................................................................................................... 2-307
MAX and MIN ........................................................................................................ 2-310
AryMax and AryMin ............................................................................................... 2-312
ArySearch .............................................................................................................. 2-314
Data Movement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-317
MOVE .................................................................................................................... 2-318
MoveBit ................................................................................................................. 2-321
MoveDigit .............................................................................................................. 2-323
TransBits ............................................................................................................... 2-325
MemCopy .............................................................................................................. 2-327
SetBlock ................................................................................................................ 2-329
Exchange .............................................................................................................. 2-331
AryExchange ......................................................................................................... 2-333

10 NJ-series Instructions Reference Manual (W502)
CONTENTS
AryMove ................................................................................................................ 2-335
Clear ...................................................................................................................... 2-337
Copy**ToNum (Bit String to Signed Integer) ......................................................... 2-339
Copy**To*** (Bit String to Real Number) ............................................................... 2-341
CopyNumTo** (Signed Integer to Bit String) ......................................................... 2-343
CopyNumTo** (Signed Integer to Real Number) .................................................. 2-345
Copy**To*** (Real Number to Bit String) ............................................................... 2-347
Copy**ToNum (Real Number to Signed Integer) .................................................. 2-349
Shift Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-351
AryShiftReg ........................................................................................................... 2-352
AryShiftRegLR ....................................................................................................... 2-354
ArySHL and ArySHR ............................................................................................. 2-357
SHL and SHR ........................................................................................................ 2-360
NSHLC and NSHRC ............................................................................................. 2-362
ROL and ROR ....................................................................................................... 2-364
Conversion Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-367
Swap ..................................................................................................................... 2-368
Neg ........................................................................................................................ 2-369
Decoder ................................................................................................................. 2-371
Encoder ................................................................................................................. 2-374
BitCnt ..................................................................................................................... 2-376
ColmToLine_** ...................................................................................................... 2-377
LineToColm ........................................................................................................... 2-379
Gray ....................................................................................................................... 2-381
PWLApprox ........................................................................................................... 2-384
MovingAverage ..................................................................................................... 2-387
PIDAT .................................................................................................................... 2-393
DispartReal ............................................................................................................ 2-418
UniteReal ............................................................................................................... 2-421
NumToDecString and NumToHexString ............................................................... 2-423
HexStringToNum_** .............................................................................................. 2-426
FixNumToString .................................................................................................... 2-428
StringToFixNum .................................................................................................... 2-430
DtToString ............................................................................................................. 2-433
DateToString ......................................................................................................... 2-435
TodToString ........................................................................................................... 2-436
GrayToBin_** and BinToGray_** .......................................................................... 2-438
StringToAry ........................................................................................................... 2-441
AryToString ........................................................................................................... 2-443
DispartDigit ............................................................................................................ 2-445
UniteDigit_** .......................................................................................................... 2-447
Dispart8Bit ............................................................................................................. 2-449
Unite8Bit_** ........................................................................................................... 2-451
ToAryByte .............................................................................................................. 2-453
AryByteTo .............................................................................................................. 2-458
SizeOfAry .............................................................................................................. 2-463
Stack and Table Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-465
StackPush ............................................................................................................. 2-466
StackFIFO and StackLIFO .................................................................................... 2-475
StackIns ................................................................................................................. 2-478
StackDel ................................................................................................................ 2-480
RecSearch ............................................................................................................. 2-482
RecRangeSearch .................................................................................................. 2-487
RecSort ................................................................................................................. 2-492
RecNum ................................................................................................................ 2-497
RecMax and RecMin ............................................................................................. 2-499
FCS Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-503
StringSum .............................................................................................................. 2-504
StringLRC .............................................................................................................. 2-506

11
NJ-series Instructions Reference Manual (W502)
CONTENTS
StringCRCCCITT ................................................................................................... 2-508
StringCRC16 ......................................................................................................... 2-510
AryLRC_** ............................................................................................................. 2-512
AryCRCCCITT ....................................................................................................... 2-514
AryCRC16 ............................................................................................................. 2-516
Text String Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-519
CONCAT ............................................................................................................... 2-520
LEFT and RIGHT .................................................................................................. 2-522
MID ........................................................................................................................ 2-524
FIND ...................................................................................................................... 2-526
LEN ....................................................................................................................... 2-528
REPLACE .............................................................................................................. 2-529
DELETE ................................................................................................................ 2-531
INSERT ................................................................................................................. 2-533
GetByteLen ........................................................................................................... 2-535
ClearString ............................................................................................................ 2-537
ToUCase and ToLCase ......................................................................................... 2-538
TrimL and TrimR ................................................................................................... 2-540
Time and Time of Day Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-543
ADD_TIME ............................................................................................................ 2-544
ADD_TOD_TIME ................................................................................................... 2-546
ADD_DT_TIME ..................................................................................................... 2-548
SUB_TIME ............................................................................................................ 2-550
SUB_TOD_TIME ................................................................................................... 2-552
SUB_TOD_TOD .................................................................................................... 2-554
SUB_DATE_DATE ................................................................................................ 2-555
SUB_DT_DT ......................................................................................................... 2-556
SUB_DT_TIME ...................................................................................................... 2-558
MULTIME .............................................................................................................. 2-560
DIVTIME ................................................................................................................ 2-562
CONCAT_DATE_TOD .......................................................................................... 2-564
DT_TO_TOD ......................................................................................................... 2-566
DT_TO_DATE ....................................................................................................... 2-568
SetTime ................................................................................................................. 2-570
GetTime ................................................................................................................. 2-572
DtToSec ................................................................................................................ 2-574
DateToSec ............................................................................................................ 2-576
TodToSec .............................................................................................................. 2-577
SecToDt ................................................................................................................ 2-578
SecToDate ............................................................................................................ 2-580
SecToTod .............................................................................................................. 2-582
TimeToNanoSec ................................................................................................... 2-583
TimeToSec ............................................................................................................ 2-584
NanoSecToTime ................................................................................................... 2-585
SecToTime ............................................................................................................ 2-586
ChkLeapYear ........................................................................................................ 2-588
GetDaysOfMonth ................................................................................................... 2-589
DaysToMonth ........................................................................................................ 2-591
GetDayOfWeek ..................................................................................................... 2-593
GetWeekOfYear .................................................................................................... 2-595
DtToDateStruct ...................................................................................................... 2-597
DateStructToDt ...................................................................................................... 2-599
System Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-601
TraceSamp ............................................................................................................ 2-602
TraceTrig ............................................................................................................... 2-605
GetTraceStatus ..................................................................................................... 2-607
SetAlarm ................................................................................................................ 2-610
ResetAlarm ............................................................................................................ 2-615
GetAlarm ............................................................................................................... 2-617

12 NJ-series Instructions Reference Manual (W502)
CONTENTS
ResetPLCError ...................................................................................................... 2-619
GetPLCError .......................................................................................................... 2-622
ResetCJBError ...................................................................................................... 2-624
GetCJBError .......................................................................................................... 2-626
GetEIPError ........................................................................................................... 2-628
ResetMCError ....................................................................................................... 2-630
GetMCError ........................................................................................................... 2-634
ResetECError ........................................................................................................ 2-636
GetECError ............................................................................................................ 2-637
SetInfo ................................................................................................................... 2-639
ResetUnit ............................................................................................................... 2-641
GetNTPStatus ....................................................................................................... 2-645
Communications Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-647
ExecPMCR ............................................................................................................ 2-648
SerialSend ............................................................................................................. 2-658
SerialRcv ............................................................................................................... 2-665
SendCmd .............................................................................................................. 2-674
CIPOpen ................................................................................................................ 2-684
CIPRead ................................................................................................................ 2-692
CIPWrite ................................................................................................................ 2-696
CIPSend ................................................................................................................ 2-701
CIPClose ............................................................................................................... 2-704
CIPUCMMRead ..................................................................................................... 2-706
CIPUCMMWrite ..................................................................................................... 2-710
CIPUCMMSend ..................................................................................................... 2-716
EC_CoESDOWrite ................................................................................................ 2-726
EC_CoESDORead ................................................................................................ 2-729
EC_StartMon ......................................................................................................... 2-734
EC_StopMon ......................................................................................................... 2-740
EC_SaveMon ........................................................................................................ 2-742
EC_CopyMon ........................................................................................................ 2-744
EC_DisconnectSlave ............................................................................................. 2-746
EC_ConnectSlave ................................................................................................. 2-752
SktUDPCreate ....................................................................................................... 2-754
SktUDPRcv ........................................................................................................... 2-761
SktUDPSend ......................................................................................................... 2-764
SktTCPAccept ....................................................................................................... 2-767
SktTCPConnect ..................................................................................................... 2-770
SktTCPRcv ............................................................................................................ 2-777
SktTCPSend .......................................................................................................... 2-780
SktGetTCPStatus .................................................................................................. 2-783
SktClose ................................................................................................................ 2-786
SktClearBuf ........................................................................................................... 2-789
SD Memory Card Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-793
FileWriteVar ........................................................................................................... 2-794
FileReadVar .......................................................................................................... 2-799
FileOpen ................................................................................................................ 2-803
FileClose ............................................................................................................... 2-806
FileSeek ................................................................................................................ 2-809
FileRead ................................................................................................................ 2-812
FileWrite ................................................................................................................ 2-819
FileGets ................................................................................................................. 2-826
FilePuts ................................................................................................................. 2-833
FileCopy ................................................................................................................ 2-840
FileRemove ........................................................................................................... 2-848
FileRename ........................................................................................................... 2-852
DirCreate ............................................................................................................... 2-857
DirRemove ............................................................................................................ 2-860

13
NJ-series Instructions Reference Manual (W502)
CONTENTS
Other Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-863
ReadNbit_** ........................................................................................................... 2-864
WriteNbit_** ........................................................................................................... 2-866
ChkRange ............................................................................................................. 2-868
GetMyTaskStatus .................................................................................................. 2-870
Task_IsActive ........................................................................................................ 2-873
Lock and Unlock .................................................................................................... 2-875
Get**Clk ................................................................................................................. 2-880
Get**Cnt ................................................................................................................ 2-881
Appendices
A-1 Error Codes Related to Instructions ......................................................................................A-2
A-2 Error Code Descriptions .......................................................................................................A-18
A-3 Error Code Details .................................................................................................................A-24
A-4 SDO Abort Codes ..................................................................................................................A-47
Index

14 NJ-series Instructions Reference Manual (W502)
CONTENTS

15
Read and Understand this Manual
NJ-series Instructions Reference Manual (W502)
Read and Understand this Manual
Please read and understand this manual before using the product. Please consult your OMRON representative
if you have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a
period of one year (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-
INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which
liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS
REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS
WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

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16 NJ-series Instructions Reference Manual (W502)
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer's application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses
listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or
uses not described in this manual.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

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NJ-series Instructions Reference Manual (W502)
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other
reasons.
It is our practice to change model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be changed
without any notice. When in doubt, special model numbers may be assigned to fix or establish key
specifications for your application on your request. Please consult with your OMRON representative at any
time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.
PERFORMANCE DATA
Performance data given in this manual is provided as a guide for the user in determining suitability and does
not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must
correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and
Limitations of Liability.
ERRORS AND OMISSIONS
The information in this manual has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

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18 NJ-series Instructions Reference Manual (W502)