Mitsubishi Electric MELSEC iQ-R C Series Owner's manual

MELSEC iQ-R C Controller Module
Programming Manual

1
SAFETY PRECAUTIONS
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle
the product correctly. If products are used in a different way from that specified by manufacturers, the protection function of
the products may not work properly.
Make sure that the end users read this manual and then keep the manual in a safe place for future reference.
CONDITIONS OF USE FOR THE PRODUCT
(1) MELSEC programmable controller ("the PRODUCT") shall be used in conditions;
i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major or serious accident;
and
ii) where the backup and fail-safe function are systematically or automatically provided outside of the PRODUCT for the
case of any problem, fault or failure occurring in the PRODUCT.
(2) The PRODUCT has been designed and manufactured for the purpose of being used in general industries.
MITSUBISHI ELECTRIC SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT LIMITED TO
ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT, WARRANTY, TORT, PRODUCT
LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS OR LOSS OR DAMAGE TO PROPERTY CAUSED BY the
PRODUCT THAT ARE OPERATED OR USED IN APPLICATION NOT INTENDED OR EXCLUDED BY
INSTRUCTIONS, PRECAUTIONS, OR WARNING CONTAINED IN MITSUBISHI ELECTRIC USER'S, INSTRUCTION
AND/OR SAFETY MANUALS, TECHNICAL BULLETINS AND GUIDELINES FOR the PRODUCT.
("Prohibited Application")
Prohibited Applications include, but not limited to, the use of the PRODUCT in;
• Nuclear Power Plants and any other power plants operated by Power companies, and/or any other cases in which the
public could be affected if any problem or fault occurs in the PRODUCT.
• Railway companies or Public service purposes, and/or any other cases in which establishment of a special quality
assurance system is required by the Purchaser or End User.
• Aircraft or Aerospace, Medical applications, Train equipment, transport equipment such as Elevator and Escalator,
Incineration and Fuel devices, Vehicles, Manned transportation, Equipment for Recreation and Amusement, and
Safety devices, handling of Nuclear or Hazardous Materials or Chemicals, Mining and Drilling, and/or other
applications where there is a significant risk of injury to the public or property.
Notwithstanding the above restrictions, Mitsubishi Electric may in its sole discretion, authorize use of the PRODUCT in
one or more of the Prohibited Applications, provided that the usage of the PRODUCT is limited only for the specific
applications agreed to by Mitsubishi Electric and provided further that no special quality assurance or fail-safe,
redundant or other safety features which exceed the general specifications of the PRODUCTs are required. For details,
please contact the Mitsubishi Electric representative in your region.
(3) Mitsubishi Electric shall have no responsibility or liability for any problems involving programmable controller trouble and
system trouble caused by DoS attacks, unauthorized access, computer viruses, and other cyberattacks.

2
CONSIDERATIONS FOR USE
Considerations for the Wind River Systems product
C Controller module has an embedded real-time operating system, VxWorks, manufactured by Wind River Systems, Inc. in
the United States. We, Mitsubishi, make no warranty for the Wind River Systems product and will not be liable for any
problems and damages caused by the Wind River Systems product during use of C Controller module.
For the problems or specifications of the Wind River Systems product, refer to the corresponding manual or consult Wind
River Systems, Inc.
Contact information is available on the following website.
• Wind River Systems, Inc.: www.windriver.com
INTRODUCTION
Thank you for purchasing the Mitsubishi Electric MELSEC iQ-R series programmable controllers.
This manual describes the functions required for programming.
Before using this product, please read this manual and the relevant manuals carefully and develop familiarity with the
functions and performance of the MELSEC iQ-R series programmable controller to handle the product correctly.
Please make sure that the end users read this manual.

3
CONTENTS
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
CONDITIONS OF USE FOR THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
CONSIDERATIONS FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
RELEVANT MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
GENERIC TERMS AND ABBREVIATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
CHAPTER 1 COMMON ITEMS 10
1.1 Header Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2 C Controller Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Program processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Argument specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.3 MELSEC Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Program processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Accessible range and devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Argument specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
1.4 Motion Module Dedicated Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Program processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
1.5 Considerations on Interrupt Service Routine (ISR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
CHAPTER 2 FUNCTION LIST 64
2.1 C Controller Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
C Controller module dedicated functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
C Controller module dedicated functions for ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
2.2 MELSEC Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
2.3 Motion Module Dedicated Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
CHAPTER 3 DETAILS OF FUNCTION 69
3.1 C Controller Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
CCPU_ChangeCCIEFBCycPrm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
CCPU_ChangeFileSecurity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
CCPU_ClearError . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
CCPU_Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
CCPU_DedicatedDInst . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
CCPU_DedicatedGInst . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
CCPU_DedicatedJInst. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
CCPU_DedicatedMInst . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
CCPU_DisableInt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
CCPU_EnableInt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
CCPU_EndCCIEFBDataAssurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
CCPU_EntryCCIEFBRefEndFunc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

4
CCPU_EntryInt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
CCPU_EntryTimerEvent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
CCPU_EntryWDTInt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
CCPU_FromBuf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
CCPU_FromBufHG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
CCPU_GetCCIEFBDiagnosticInfo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
CCPU_GetConstantProcessStatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
CCPU_GetCounterMicros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
CCPU_GetCounterMillis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
CCPU_GetCpuStatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
CCPU_GetDotMatrixLED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
CCPU_GetErrInfo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
CCPU_GetFileSecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
CCPU_GetIDInfo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
CCPU_GetLEDStatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
CCPU_GetOpSelectMode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
CCPU_GetPowerStatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
CCPU_GetRTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
CCPU_GetSerialNo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
CCPU_GetSwitchStatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
CCPU_GetUnitInfo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
CCPU_LockFWUpdate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
CCPU_MountMemoryCard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
CCPU_ReadDevice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
CCPU_ReadLinkDevice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
CCPU_ReadMCUnitLabel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
CCPU_ReadMCUnitLabelBit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
CCPU_RegistEventLog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
CCPU_Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
CCPU_ResetDevice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
CCPU_ResetWDT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
CCPU_RestoreDefaultCCIEFBCycPrm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
CCPU_SetDevice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
CCPU_SetDotMatrixLED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
CCPU_SetLEDStatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
CCPU_SetOpSelectMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
CCPU_SetRTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
CCPU_ShutdownRom. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
CCPU_StartCCIEFBDataAssurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
CCPU_StartWDT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
CCPU_StopWDT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
CCPU_SysClkRateGet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
CCPU_SysClkRateSet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
CCPU_ToBuf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
CCPU_ToBufHG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
CCPU_UnlockFWUpdate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
CCPU_UnmountMemoryCard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
CCPU_WaitEvent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
CCPU_WaitSwitchEvent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
CCPU_WaitTimerEvent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
CCPU_WaitUnitEvent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

5
CONTENTS
CCPU_WriteDevice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
CCPU_WriteLinkDevice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
CCPU_WriteMCUnitLabel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
CCPU_WriteMCUnitLabelBit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
CCPU_X_In_BitEx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
CCPU_X_In_WordEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
CCPU_Y_In_BitEx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
CCPU_Y_In_WordEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
CCPU_Y_Out_BitEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
CCPU_Y_Out_WordEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
3.2 C Controller module dedicated functions for ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
CCPU_DisableInt_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
CCPU_EnableInt_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
CCPU_FromBuf_ISR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
CCPU_FromBufHG_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
CCPU_GetCounterMicros_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
CCPU_GetCounterMillis_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
CCPU_GetDotMatrixLED_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
CCPU_ReadDevice_ISR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
CCPU_RegistEventLog_ISR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
CCPU_ResetDevice_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
CCPU_SetDevice_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
CCPU_SetDotMatrixLED_ISR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
CCPU_SetLEDStatus_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
CCPU_ToBuf_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
CCPU_ToBufHG_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
CCPU_WriteDevice_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
CCPU_X_In_Word_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
CCPU_Y_In_Word_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
CCPU_Y_Out_Word_ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
3.3 MELSEC Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
mdClose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
mdControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
mdDevRstEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
mdDevSetEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
mdGetLabelInfo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
mdInit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
mdOpen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
mdRandREx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
mdRandRLabelEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
mdRandWEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
mdRandWLabelEx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
mdReceiveEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
mdReceiveEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
mdSendEx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
mdSendEx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
mdTypeRead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
3.4 Motion Module Dedicated Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
MCFB::RefreshLabels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
MCFBExecute::SetExecute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
MCFBEnable::SetEnable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

6
MCv_Jog::SetEnableJog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
CHAPTER 4 ERROR CODE LIST 225
4.1 Common Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
4.2 C Controller Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
4.3 MELSEC Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
4.4 Motion Module Dedicated Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
4.5 Error Codes Different From Conventional Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
APPENDIX 240
Appendix 1 Example for Replacing Ladder by C Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Program example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Appendix 2 How to Replace a Q12DCCPU-V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Replacement of projects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Replacement of VxWorks standard API functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Replacement of functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Replacement of device type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Compilation of replaced project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Appendix 3 Correspondence Table to Q12DCCPU-V Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246
C Controller module dedicated functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
C Controller module dedicated functions for ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Bus interface functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Bus interface functions for ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
MELSEC data link functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Appendix 4 How to Replace a Q06CCPU-V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Replacement of projects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Replacement of VxWorks standard API functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Replacement of functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Replacement of device type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Compilation of replaced project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Appendix 5 Correspondence Table to Q06CCPU-V Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Bus interface functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
MELSEC data link functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
INDEX 256
FUNCTION INDEX 258
REVISIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .260
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .261
INFORMATION AND SERVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262
TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262

7
RELEVANT MANUALS
e-Manual refers to the Mitsubishi Electric FA electronic book manuals that can be browsed using a dedicated
tool.
e-Manual has the following features:
• Required information can be cross-searched in multiple manuals.
• Other manuals can be accessed from the links in the manual.
• Hardware specifications of each part can be found from the product figures.
• Pages that users often browse can be bookmarked.
Manual name [manual number] Description Available form
MELSEC iQ-R C Controller Module Programming Manual
[SH-081371ENG] (this manual)
Programming specifications and dedicated function library of a
C Controller module
e-Manual
PDF
CW Workbench/CW-Sim Operating Manual
[SH-081373ENG]
System configuration, specifications, functions, and
troubleshooting of CW Workbench/CW-Sim
e-Manual
PDF

8
TERMS
Unless otherwise specified, this manual uses the following terms.
GENERIC TERMS AND ABBREVIATIONS
Unless otherwise specified, this manual uses the following generic terms and abbreviations.
Term Description
MELSEC data link function A data link function library offered by C Controller module.
It is used to access other CPU modules as a connection target via network or in a multiple CPU system.
Generic term/abbreviation Description
CC-Link IE TSN module A generic term for the following modules:
• RJ71GN11-T2 CC-Link IE TSN master/local module
• RJ71GN11-SX CC-Link IE TSN master/local module
• Motion module
CC-Link IE Controller Network module A generic term for the following modules:
• RJ71GP21-SX CC-Link IE Controller Network modules
• RJ71GP21S-SX CC-Link IE Controller Network modules
• RJ71EN71 (when a CC-Link IE Controller Network function is used.)
CC-Link IE Field Network module A generic term for the following modules:
• RJ71GF11-T2 CC-Link IE Field Network master/local modules
• RJ71EN71 (when a CC-Link IE Field Network function is used).
• Simple motion modules
CC-Link module An abbreviation for CC-Link module, RJ61BT11.
CW Configurator A generic product name for SWnDND-RCCPU. ('n' indicates its version.)
CW Workbench An abbreviation for C Controller module and C intelligent function module engineering tool, CW
Workbench.
CW-Sim An abbreviation for VxWorks simulator that can operate and debug the C Controller module and C
intelligent function module programs on a personal computer on which CW Workbench installed, without
connecting to the actual machine (target).
C Controller module A generic term for MELSEC iQ-R series C Controller module.
C Controller module dedicated function A dedicated function library offered by C Controller module.
It is used to control the C Controller module.
MCFB setting function A generic term for the following functions:
• MCFBExecute::SetExecute
• MCFBEnable::SetEnable
• MCv_Jog::SetEnableJog
R12CCPU-V An abbreviation for R12CCPU-V C Controller module.
RCPU A generic term for R04CPU, R04ENCPU, R08CPU, R08PCPU, R08ENCPU, R08SFCPU, R16CPU,
R16PCPU, R16ENCPU, R16SFCPU, R32CPU, R32PCPU, R32ENCPU, R32SFCPU, R120CPU,
R120PCPU, R120ENCPU, and R120SFCPU.
VxWorks A product name for the real-time operating system manufactured by Wind River Systems, Inc.
Intelligent function module A generic term for modules which has functions other than input and output, such as A/D converter module
and D/A converter module.
High Performance model QCPU A generic term for Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, and Q25HCPU.
Interface board for a personal computer A generic term for the following modules:
• NZ81GN11-T2 CC-Link IE TSN interface board
• NZ81GN11-SX CC-Link IE TSN interface board
Bus interface An abbreviation for a MELSEC iQ-R bus interface.
Bus interface communication An abbreviation for MELSEC iQ-R bus interface communication.
Bus interface function A generic term for a dedicated function library (QBF functions) provided by a MELSEC-Q series C
Controller module.
Process CPU A generic term for Q02PHCPU, Q06PHCPU, Q12PHCPU, and Q25PHCPU.
Basic model QCPU A generic term for Q00JCPU, Q00CPU, and Q01CPU.
Universal model QCPU A generic term for Q00UJCPU, Q00UCPU, Q01UCPU, Q02UCPU, Q03UDCPU, Q03UDECPU,
Q03UDVCPU, Q04UDHCPU, Q04UDEHCPU, Q04UDVCPU, Q04UDPVCPU, Q06UDHCPU,
Q06UDEHCPU, Q06UDVCPU, Q06UDPVCPU, Q10UDHCPU, Q10UDEHCPU, Q13UDHCPU,
Q13UDEHCPU, Q13UDVCPU, Q13UDPVCPU, Q20UDHCPU, Q20UDEHCPU, Q26UDHCPU,
Q26UDEHCPU, Q26UDVCPU, Q26UDPVCPU, Q50UDEHCPU, Q100UDEHCPU.

9
Dedicated function library A generic term for C Controller module dedicated functions, MELSEC data link functions, and motion
module dedicated classes.
Redundant CPU A generic term for Q12PRHCPU and Q25PRHCPU.
Generic term/abbreviation Description

10 1 COMMON ITEMS
1.1 Header Files
1COMMON ITEMS
A user program is created by using the VxWorks standard API functions*1 and dedicated function library provided by a C
Controller module in accordance with the specification of VxWorks, the operating system of C Controller module.
*1 For details on the VxWorks standard API functions, refer to the following programmer's guide supported.
VxWorks "KERNEL PROGRAMMER'S GUIDE"
Dedicated function libraries provided by a C Controller module are as follows:
• C Controller module dedicated function
• MELSEC Data Link function
• Motion module dedicated class*1
*1 Available to use in a C Controller module with the firmware version '15' or later.
For the execution procedure of user programs, refer to the following:
MELSEC iQ-R C Controller Module User's Manual
1.1 Header Files
Include the following header files in a user program to use the dedicated function library.
A header file is stored in a C Controller module.
MELSEC iQ-R C Controller Module User's Manual
Dedicated function library Header file
C Controller module dedicated function CCPUFunc.h
MELSEC data link function MDFunc.h
Motion module dedicated class MCFBFunc.h

1 COMMON ITEMS
1.2 C Controller Module Dedicated Functions 11
1
1.2 C Controller Module Dedicated Functions
C Controller dedicated functions of the dedicated function libraries are used to control C Controller module.
These functions can be used for reading status of C Controller module or accessing resources such as LED control and clock.
Program processing
The following shows the user program processing using the C Controller module dedicated function.
1. Start a task.
2. Read the status of C Controller module and access the resources such as LED control and clock by using the C
Controller module dedicated function.
3. Complete the task.
Considerations
Considerations for user WDT (user watchdog timer)
User WDT error occurrence
If a user WDT cannot be reset due to a user program runaway, a user WDT error will occur.
In this case, take the following corrective actions.
• Increase the user WDT period set with the CCPU_StartWDT function.
• Lower the number of tasks with high CPU utilization or make them deactivated.
• Review the user program.
Reset the C Controller module once the corrective actions have been taken.
In the user program, a user WDT can be used to monitor the hardware and status of user program, and
processing timeout for accessing and controlling each module.
User WDT setting range
The user WDT period can be set within the range of 100 ms to 10,000 ms.
Output when a user WDT error occurs
When a user WDT error occurs, the output turns OFF.

12 1 COMMON ITEMS
1.2 C Controller Module Dedicated Functions
Considerations for dedicated functions
Argument
• For the first argument, "pcInstName", categorizing the dedicated instructions (D/DP/J/JP/G/GP/M) is not required.
• Devices of the own station cannot be specified. Reserve the required area with a user program, and specify the start
address of the area to the relevant argument.
• Specify devices of other stations by using a character string. Set the value (the number of elements to which one is added
for the termination code) to the number of elements for the array.
(Example) To specify D4: char cDev[3] = {"D4"};
Set '3', the total number of '2' for D4 and '1' for termination code, to the number of elements for the character string.
• When the data type is device name (control data, input data, and output data), specify the argument using an array.
• The size is required to be set according to the number of elements for the array, which is specified to the argument. When
data type is 16-bit binary, BCD 4-digit, or real number, set the size to '1'. When data type is 32-bit binary or BCD 8-digit, set
the size to '2'.
• When data type is bit (completion device), specify the argument using an array. Specify '1' for completion or '0' for
incompletion to the first array. In the second array, '0' or '1' is stored for the normal completion or abnormal completion,
respectively.
• For arguments without the setting data, set the setting data to NULL, and set the size to '0'.
• Errors which occur in the dedicated function are not registered in the event history.
Executing a dedicated function
Before executing a dedicated function, check the status of a target module specified in the second argument. The response
may not be returned depending on the target module status.
Function name Target
CCPU_DedicatedDInst A CPU module specified by the start I/O number of the target CPU module
CCPU_DedicatedMInst
CCPU_DedicatedGInst A module where the module dedicated instruction is executed that is specified by the start input/output number
CCPU_DedicatedJInst A network module specified by a network number.

1 COMMON ITEMS
1.2 C Controller Module Dedicated Functions 13
1
Argument specification
This section shows the argument specifications of the C Controller module dedicated functions.
Device type
The following tables show the device types specified to the C Controller module dedicated functions.
Devices are defined in the header file "CCPUFunc.h".
Either a code or a device name can be specified as a device type.
Device types for accessing internal user devices and internal system devices
Device type can be specified to the argument sDevType of the CCPU_WriteDevice/CCPU_ReadDevice/CCPU_SetDevice/
CCPU_ResetDevice/CCPU_WriteDevice_ISR/CCPU_ReadDevice_ISR/CCPU_SetDevice_ISR/CCPU_ResetDevice_ISR
functions.
Device types for accessing link devices
Device type can be specified to the argument sDevType of the CCPU_WriteLinkDevice/CCPU_ReadLinkDevice functions.
*1 To directly access link devices, access them as link direct devices (J\) depending on network module specifications. An access
target device varies depending on a device number to be specified. Therefore, a device number which is actually accessed may be
different from the specified device number.
For specification method for accessing link direct devices (J\) using C Controller module dedicated functions, refer to the following:
MELSEC iQ-R C Controller Module User's Manual
*2 For motion modules (RD78G/GH), only link special relays (Jn\SB) and link special registers (Jn\SW) can be accessed.
Device name (Device) Device type
Code Device name
Decimal Hexadecimal
Internal relay (M) 4 4H Dev_CCPU_M
Special relay (SM) 5 5H Dev_CCPU_SM
Data register (D) 13 DH Dev_CCPU_D
Special register (SD) 14 EH Dev_CCPU_SD
Link relay (B) 23 17H Dev_CCPU_B
Link register (W) 24 18H Dev_CCPU_W
File register (ZR) 220 DCH Dev_CCPU_ZR
Device name (Device) Device type
Code Device name
Decimal Hexadecimal
Link input (Jn\X)*1 1000 3E8H Dev_LX
Link output (Jn\Y)*1 2000 7D0H Dev_LY
Link relay (Jn\B)*1 23000 59D8H Dev_LB
Link register (Jn\W)*1 24000 5DC0H Dev_LW
Link special relay (Jn\SB)*1,*2 25000 61A8H Dev_LSB
Link special register (Jn\SW)*1,*2 28000 6D60H Dev_LSW

14 1 COMMON ITEMS
1.3 MELSEC Data Link Functions
1.3 MELSEC Data Link Functions
MELSEC data link functions are the integrated communication function libraries which are independent of the communication
protocols.
A program to communicate with a CPU module can be created regardless of a target hardware or communication protocols
by using the MELSEC data link functions.
The communication functions supported by the MELSEC data link functions are as follows:
Program processing
The following shows the user program processing using the MELSEC data link function.
When accessing with a device name
1. Start a task.
2. Open a communication line. (mdOpen function)
3. Perform dummy access (such as device/model name reading) to an access target.
4. Access the target by using the MELSEC data link function.
5. To stop accessing the target, go to the procedure 6.
To access the target again, go back to the procedure 4.
6. Close the communication line. (mdClose function)
7. Complete the task.
When accessing with a label name
1. Start a task.
2. Open a communication line. (mdOpen function)
3. Acquire device information (label assignment information) from a target CPU module. (mdGetLabelInfo function)
4. Access the target CPU module by using the acquired device information (label assignment information).
(mdRandRLabelEx/mdRandWLabelEx function)
5. Check if there is no change in the device information (label assignment information) of the target CPU module.
If it is changed, go back to the procedure 3.
6. To stop accessing the target, go to the procedure 7.
To access the target again, go back to the procedure 4.
7. Close the communication line. (mdClose function)
8. Complete the task.
Communication function Description
Bus interface communication Accesses a CPU module mounted on the same base unit.
CC-Link IE Controller Network communication Accesses a CPU module on the CC-Link IE Controller Network via a CC-Link IE Controller Network
module.
CC-Link IE Field Network communication Accesses a CPU module on the CC-Link IE Field Network via a CC-Link IE Field Network module.
CC-Link IE TSN communication Accesses a CPU module on the CC-Link IE TSN via a CC-Link IE TSN module.
MELSECNET/H network communication Accesses a CPU module on the MELSECNET/H network via a MELSECNET/H network module.
CC-Link communication Accesses a CPU module on the CC-Link via a CC-Link module.

1 COMMON ITEMS
1.3 MELSEC Data Link Functions 15
1
Considerations
The following shows the considerations when using the MELSEC data link functions.
Considerations for programming
Open/close processing of a communication line (mdOpen/mdClose function)
Perform the open/close processing of communication line (the mdOpen/mdClose function) only once at the start of task (task
activation) and at the end of task (task completion) respectively in each user program. Opening/closing the line every
communication decreases the communication performance.
Execution after using the mdOpen function
At the first execution of the function after using the mdOpen function, it takes longer to execute the function since the CPU
module information needs to be acquired. The succeeding processing time can be shortened by performing dummy access at
the first time.
Access to other stations on the same task
Accessing 33 or more other stations simultaneously on the same task of C Controller module using a user program may
decrease the communication performance. To access other stations simultaneously on the same task, limit it to 32 or less
stations.
mdGetLabelInfo function call
The mdGetLabelInfo function does not need to be called each time to access a target CPU module.
Only if the error occurs (Error code: -81) when accessing by using the mdRandRLabelEx/mdRandWLabelEx function , call the
mdGetLabelInfo function again.
taskDelete execution
Do not execute the taskDelete in a task using the MELSEC data link function. Also, do not delete a task using the MELSEC
data link function with the taskDelete. Otherwise, the MELSEC data link function may not operate properly.
Accessing devices of the own station and of a CPU module on other stations
An interlock may be required to be provided depending on the link status of the own station and other stations.
Access to devices on the own station
Create a user program that provides an interlock to enable reading/writing data when the following conditions are satisfied to
access devices via each network module.
Even if the above conditions are not satisfied; however, read/write processing to the own station is completed normally.
Module to be routed Condition that requires interlock
CC-Link IE Controller Network module When the following conditions are met:
• The bit of the own station data link error status (SB0049) is OFF (data linking).
• The bit corresponding to the communication target station that is stored in 'Data link status of each
station' (SW00B0 to SW00B7) is OFF (normal communication).
CC-Link IE Field Network module
CC-Link IE TSN module
MELSECNET/H network module When the following conditions are met:
• The module status (SB20) is OFF (normal).
• The bit of the own station baton pass status (SB47) is OFF (normal).
• The bit of the own station data link status (SB49) is OFF (data linking).
CC-Link module When the following conditions are met:
• The module error (Xn0) is OFF (normal).
• 'Module READY' (XnF) is ON (activated).
• The bits of the own station data link status (Xn1) is ON (data linking).

16 1 COMMON ITEMS
1.3 MELSEC Data Link Functions
Other station transient access (other station CPU module remote operation and device
access)
Create a user program that provides an interlock to enable reading/writing data when the following conditions are satisfied to
access devices via each network module.
Timeout value of MELSEC data link functions
A timeout value of MELSEC data link functions represents a value of one communication processing with an access target.
The timeout detection time may be longer than the set timeout value because communication processing is performed
multiple times for some functions to use or when initially accessing the access target. In addition, when communication
processing is performed multiple times, it may take longer time than the timeout value depending on the response timing of
the access target, even if the processing is completed normally.
When initially accessing the access target, the following processes will be performed multiple times
regardless of the functions to use. Therefore, communication processing will also be performed multiple
times.
• Determining an access target
• Acquiring information for the programming controller CPU of an access target
Module to be routed Condition that requires interlock
CC-Link IE Controller Network module When the following conditions are met:
• The bit of the own station baton pass status (SB47) is OFF (normal).
• The baton pass status of a station to be accessed (the bit corresponding to the communication target
station which is stored from SWA0 to A7) is OFF (normal communication).
CC-Link IE Field Network module
CC-Link IE TSN module When the following conditions are met:
• The bit of the own station data link error status (SB0049) is OFF (data linking).
• The bit corresponding to the communication target station that is stored in 'Data link status of each
station' (SW00B0 to SW00B7) is OFF (normal communication).
MELSECNET/H network module When the following conditions are met:
• The condition that turns the interlock ON is met when accessing devices on the own station.
• The baton pass status of a station to be accessed (the bit corresponding to the communication target
station which is stored from SW70 to 73) is OFF (normal communication).
• The data link status (the bit corresponding to the communication target station which is stored from
SW74 to 77) is OFF (normal communication).
CC-Link module When the following conditions are met:
• The condition that turns the interlock ON is met when accessing devices on the own station.
• The data link status of a station to be accessed (the bit corresponding to the communication target
station which is stored from SW80 to 83) is OFF (normal communication).

1 COMMON ITEMS
1.3 MELSEC Data Link Functions 17
1
Accessible range and devices
This section explains the accessible range and accessible devices when using MELSEC data link functions.
The accessible range of the devices varies depending on specifications and settings of an access target module. For the
accessible range, check the access target module specifications.
Bus interface communication
The following explains the accessible range and devices for bus interface communication.
Accessible range
The accessible range for bus interface communication includes the own station (C Controller module), and the CPU module
and C Controller module in a multiple CPU system.
Accessible devices
The devices accessible for communication via a bus are shown below.
• 'Batch' and 'Random' in the following table indicate as follows:
Batch: Batch write (mdSendEx function), batch read (mdReceiveEx function)
Random: Random write (mdRandWEx function), random read (mdRandREx function), bit set (mdDevSetEx
function), bit reset (mdDevRstEx function), random write by using a label name (mdRandWLabelEx
function), random read by using a label name (mdRandRLabelEx function)
• Bit devices can be accessed by using 'bit set' (mdDevSetEx function) and 'bit reset' (mdDevRstEx function).
• The fixed cycle communication area can be accessed only when the multiple CPU setting is configured.
• Device extension specifications (digit specification, bit specification and index specification) cannot be used.
C Controller module
System configuration

18 1 COMMON ITEMS
1.3 MELSEC Data Link Functions
Accessing the host CPU
The following table shows the accessible devices when accessing the host module.
: Accessible, : Not accessible
Accessing the other CPU
The following table shows the accessible devices when accessing the other CPUs (that is a CPU module and a C Controller
module in a multiple CPU system).
: Accessible, : Not accessible
Device Access method Access
target CPU
R12CCPU-V
Input relay X Batch/random 
Output relay Y Batch/random 
Internal relay M Batch/random 
Special relay SM Batch/random 
Data register D Batch/random 
Special register SD Batch/random 
Link relay B Batch/random 
Link register W Batch/random 
File register ZR Batch/random 
Intelligent function module device, module access device Un\G Batch/random 
CPU buffer memory U3En\G Batch 
Random 
Fixed cycle communication area U3En\HG Batch 
Random 
No. Access target CPU
(1) RCPU
(2) R12CCPU-V
Device Access method Access target CPU
(1) (2)
Input relay X Batch/random 
Output relay Y Batch/random 
Latch relay L Batch/random 
Internal relay M Batch/random 
Special relay SM Batch/random 
Annunciator F Batch/random 
Timer (Contact) T Batch/random 
Long timer (Contact) LT Batch/random 
Timer (Coil) T Batch/random 
Long timer (Coil) LT Batch/random 
Counter (Contact) C Batch/random 
Long counter (Contact) LC Batch/random 
Counter (Coil) C Batch/random 
Long counter (Coil) LC Batch/random 
Timer (Current value) T Batch/random 
Long timer (Current value) LT Batch/random 
Counter (Current value) C Batch/random 
Long counter (Current value) LC Batch/random 
Data register D Batch/random 
Special register SD Batch/random 
Index register Z Batch/random 
Long index register LZ Batch/random 