Mitsubishi Electric MELSEC iQ-R Series User manual

MELSEC iQ-R C Intelligent Function 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.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to serious
consequences.
Observe the precautions of both levels because they are important for personal and system safety.
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
WARNING Indicates that incorrect handling may cause hazardous conditions, resulting in
death or severe injury.
CAUTION Indicates that incorrect handling may cause hazardous conditions, resulting in
minor or moderate injury or property damage.
(1) Mitsubishi 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 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'S USER, 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 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 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 representative in your region.
(3) Mitsubishi 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 intelligent function 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 intelligent function 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 MELSEC iQ-R series programmable controllers.
This manual describes the functions required for programming of the relevant products listed below.
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.
Relevant products
RD55UP06-V, RD55UP12-V

3
CONTENTS
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
CONDITIONS OF USE FOR THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
CONSIDERATIONS FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
RELEVANT MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
CHAPTER 1 COMMON ITEMS 6
1.1 Header Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 C Intelligent Function Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Program processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 MELSEC iQ-R Series Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Program processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Accessible range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Argument specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4 Considerations on Interrupt Service Routine (ISR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CHAPTER 2 FUNCTION LIST 18
2.1 C Intelligent Function Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
C intelligent function module dedicated functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
C intelligent function module dedicated functions for ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.2 MELSEC iQ-R Series Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CHAPTER 3 DETAILS OF FUNCTION 22
3.1 C Intelligent Function Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
C intelligent function module dedicated functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
C intelligent function module dedicated functions for ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
3.2 MELSEC iQ-R Series Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
CHAPTER 4 ERROR CODE LIST 108
4.1 Common Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
4.2 C Intelligent Function Module Dedicated Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
4.3 MELSEC iQ-R Series Data Link Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
INDEX 118
FUNCTION INDEX 119
REVISIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

4
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 Intelligent Function Module
Programming Manual
[SH-081568ENG] (this manual)
Programming specifications and dedicated function libraries of a C intelligent
function module
e-Manual
PDF
MELSEC iQ-R C Intelligent Function Module User's
Manual (Startup)
[SH-081566ENG]
Specifications, procedure before operation, wiring, and operation examples of
a C intelligent function module
Print book
e-Manual
PDF
MELSEC iQ-R C Intelligent Function Module User's
Manual (Application)
[SH-081567ENG]
Functions, input/output signals, buffer memory, parameter setting, and
troubleshooting of a C intelligent function module
Print book
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

5
TERMS
Unless otherwise specified, this manual uses the following terms.
Term Description
C intelligent function module A generic term for MELSEC iQ-R series C intelligent function module.
C intelligent function module dedicated
function
A dedicated function library offered by the C intelligent function module.
It is used to control the C intelligent function module.
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).
CW-Sim Standalone An abbreviation for VxWorks simulator that can operate the C Controller module and C intelligent function
module programs on a personal computer to which CW Workbench not installed.
Dedicated function library A generic term for C intelligent function module dedicated function and MELSEC iQ-R series data link function.
Engineering tool Another term of the software package for the MELSEC programmable controllers.
This manual explains the GX Works3.
GX Works3 A generic product name for SWnDND-GXW3. ('n' indicates version.)
MELSEC iQ-R series data link function A data link function library offered by the C intelligent function module.
It is used to access an own station or the modules on the network.
VxWorks A product name for the real-time operating system manufactured by Wind River Systems, Inc.

61 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 offered by the C
intelligent function module in accordance with the specification of VxWorks, the operating system of C intelligent function
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 offered by a C intelligent function module are as follows:
• C intelligent function module dedicated function
• MELSEC iQ-R series data link function
For the execution procedure of user programs, refer to the following manual.
MELSEC iQ-R C Intelligent Function Module User's Manual (Startup)
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 intelligent function module.
(MELSEC iQ-R C Intelligent Function Module User's Manual (Startup))
Dedicated function library Header file
C intelligent function module dedicated function CITLFunc.h
MELSEC iQ-R series data link function MDRFunc.h

1 COMMON ITEMS
1.2 C Intelligent Function Module Dedicated Functions 7
1
1.2 C Intelligent Function Module Dedicated
Functions
C intelligent function module dedicated functions of the dedicated function libraries are used to control C intelligent function
module.
These functions can be used for reading status of the module or accessing resources such as LED control.
Program processing
The following procedure shows the processing flow of the user program using C intelligent function module.
1. Start a task.
2. Read the status of C intelligent function module and access the resources such as LED control by using the C intelligent
function module dedicated function.
3. Complete the task.
Considerations
The following shows the considerations when using the C intelligent function module dedicated function.
Considerations for user WDT (User watchdog timer)
■A 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 CITL_StartWDT function.
• Lower the number of tasks with high CPU utilization or make them deactivated.
• Review the user program.
Reset the C intelligent function 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.

81 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions
1.3 MELSEC iQ-R Series Data Link Functions
MELSEC iQ-R series 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 iQ-R series data link functions.
The communication functions supported by the MELSEC iQ-R series data link functions are as follows:
Program processing
The following procedure shows the processing flow of the user program using MELSEC iQ-R series data link function.
When accessing with a device name
1. Start a task.
2. Open a communication line. (mdrOpen function)
3. Perform dummy access (such as device/model name reading) to an access target.
4. Access the target by using the MELSEC iQ-R series 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. (mdrClose function)
7. Complete the task.
When accessing with a label name
1. Start a task.
2. Open a communication line. (mdrOpen function)
3. Acquire device information (label assignment information) from a target CPU module. (mdrGetLabelInfo function)
4. Access the target CPU module by using the acquired device information (label assignment information).
(mdrRandRLabel/mdrRandWLabel 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. (mdrClose 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.
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 iQ-R Series Data Link Functions 9
1
Considerations
The following shows the considerations when using the MELSEC iQ-R series data link functions.
Considerations for programming
■Open/close processing of a communication line (mdrOpen/mdrClose function)
Perform the open/close processing of communication line (the mdrOpen/mdrClose 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 mdrOpen function
At the first execution of the function after using the mdrOpen 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 intelligent function 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.
■mdrGetLabelInfo function call
The mdrGetLabelInfo 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 mdrRandRLabel/mdrRandWLabel function , call the
mdrGetLabelInfo function again.
■taskDelete execution
Do not execute the taskDelete in a task using MELSEC iQ-R series data link function. Also, do not delete a task using the
MELSEC iQ-R series data link function with the taskDelete. Otherwise, the MELSEC iQ-R series data link function may not
operate properly.
■Error by access concentration in a CPU module
When using the MELSEC iQ-R series data link function to access a CPU module from multiple modules or a built-in Ethernet
port of the CPU module in the system where communication processing such as device access to a CPU module is performed
frequently, an error may occur in communication processing on other modules due to the concentration of processing to a
CPU module.
When verifying the operation at the system construction and if an error occurs in communication processing, take a following
measure before running the system.
• When executing the MELSEC iQ-R series data link function in multiple tasks, do not execute the function at the same time
by exclusion control, or execute the function in one task.
• Lengthen the execution interval of the MELSEC iQ-R series data link function to avoid errors in communication processing.

10 1 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions
Accessible range
This section shows the accessible CPU module , device, and route by using the C intelligent function module.
Accessible CPU modules
■MELSEC iQ-R series
*1 It can be accessed only when using an RD55UP06-V.
■MELSEC-Q series
*1 Only a serial number of which the first 5 digits are "12042" or later
■MELSEC-L series
Accessible routes
The access target CPU modules are as follows:
*1 The module cannot be used as a relay station.
■Accessing own station (control CPU, other multiple CPU)
Access the CPU module of the station on which C intelligent function module is mounted.
: Accessible, : Not accessible, : Not applicable
Module Model
RCPU Programmable controller CPU R04CPU, R08CPU, R16CPU, R32CPU, R120CPU
Process CPU R08PCPU, R16PCPU, R32PCPU, R120PCPU
CC-Link IE built-in CPU R04ENCPU, R08ENCPU, R16ENCPU, R32ENCPU, R120ENCPU
C Controller module R12CCPU-V*1
Module Model
QCPU
(Q mode)
Basic model QCPU Q00JCPU, Q00CPU, Q01CPU
High Performance model QCPU Q02CPU, Q02HCPU, Q06HCPU, Q12HCPU, Q25HCPU
Universal model QCPU Q00UJCPU, Q00UCPU, Q01UCPU, Q02UCPU, Q03UD(E)CPU, Q04UD(E)HCPU,
Q06UD(E)HCPU, Q10UD(E)HCPU, Q13UD(E)HCPU, Q20UD(E)HCPU, Q26UD(E)HCPU,
Q50UDEHCPU, Q100UDEHCPU, Q03UDVCPU, Q04UD(P)VCPU, Q06UD(P)VCPU,
Q13UD(P)VCPU, Q26UD(P)VCPU
Process CPU Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU
C Controller module Q12DCCPU-V*1, Q24DHCCPU-V, Q24DHCCPU-VG, Q24DHCCPU-LS
Module Model
LCPU L02CPU, L02CPU-P, L02SCPU, L06CPU, L26CPU, L26CPU-BT, L26CPU-PBT
Access target Accessible CPU modules
(1) RCPU
(2) MELSEC iQ-R series C Controller module*1
(3) QCPU (Q mode)
(4) LCPU
(5) MELSEC-Q series C Controller module*1
Communication route Access target
(1) (2) (3) (4) (5)
Bus interface communication (CPU No.1 to 4) (CPU No.1 to 4) 
Own station

1 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions 11
1
■The access via single network (specify a network number and station number.)
Access by specifying the network number and station number of the target station.
When the access target CPU module can be specified by the network number and station number (CPU number) from the
station on which C intelligent function module is mounted in the status where the access target CPU module is connected to
the network, the access to the CPU module that is mounted on the eighth network is available via a relay station of RCPU or
QCPU (Q mode).
: Accessible, : Not accessible, : Not applicable
■The access via single network (specify a start I/O number and a station number of the target
station.)
Access by specifying a start I/O number of module to access the target station and a station number of the target station.
The following shows the route when the access target CPU module and C intelligent function module of the mounting side are
directly connected.
: Accessible, : Not accessible, : Not applicable
Communication route Access target
(1) (2) (3) (4) (5)
CC-Link IE Controller Network (CPU No.1 to 4) (CPU No.1 to 4) (CPU No.1 to 4) (CPU No.1 to 4)
CC-Link IE Field Network 
MELSECNET/H (CPU No.1 to 4) (CPU No.1 to 4)
Communication route Access target
(1) (2) (3) (4) (5)
CC-Link (CPU No.1 to 4) (CPU No.1 to 4) (CPU No.1 to 4) (CPU No.1 to 4)
1
Own station
Network
Other
station
Network
Relay
station
Own station
Network
Other
station

12 1 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions
Accessible devices
The access target CPU modules are as follows:
: Accessible, : Not accessible
Access target Accessible CPU modules
(1) RCPU
(2) MELSEC iQ-R series C Controller module
(3) QCPU (Q mode)
(4) LCPU
(5) MELSEC-Q series C Controller module
Device name (Device)*1 Access target
(1) (2) (3) (4) (5)
Function input (FX) 
Function output (FY) 
Function register (FD) 
Special relay (SM) 
Special register (SD) 
Input relay (X) 
Output relay (Y) 
Internal relay (M) 
*2
Latch relay (L) 
Annunciator (F) 
Edge relay (V) 
Link relay (B) 
*3
Data register (D) 
*2
Link register (W) 
*3
Extended internal relay (M) 
Extended data register (D)*4 
Extended link register (W)*4 
Timer Contact (TS) 
Coil (TC) 
Current value (T/TN) *5 
Long timer Contact (LTS) 
Coil (LTC) 
Current value (LT/LTN)*5 
Counter Contact (CS) 
Coil (CC) 
Current value (C/CN)*5 
Long counter Contact (LCS) 
Coil (LCC) 
Current value (LC/LCN)*5 
Retentive timer Contact (STS, SS*6)
Coil (STC, SC*6)
Current value (ST/STN, ST/SN*6)*5 
Long retentive timer Contact (LSTS) 
Coil (LSTC) 
Current value (LST/LSTN)*5 
Link special relay (SB) 
Link special register (SW) 
Step relay (S) 
Direct input (DX) 
Direct output (DY) 
Accumulator (A) 

1 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions 13
1
*1 The file registers for each local device and program in which the program name is specified cannot be accessed.
*2 For Q12DCCPU-V (Basic mode), select "Use device function" on a C Controller module.
*3 For Q12DCCPU-V, only Q12DCCPU-V (Extended mode) can be accessed.
*4 The extended data register (D) and extended link register (W) can be accessed by the following two methods.
(1): Access by directly specifying the device name of the extended data register (D) and extended link register (W)
(2): Access to the file register (ZR) area assigned to the extended data register (D) and extended link register (W)
*5 Either of the device names can be specified.
*6 This is the device name in QCPU (Q mode), LCPU, and MELSEC-Q series C Controller module.
*7 It is not accessible when using Q00JCPU or Q00UJCPU.
*8 When accessing out of the range of the file register (ZR) area, the value of -1(FFFFH) is sampled.
*9 "": Specify the block number.
*10 "": Specify the network number.
*11 "": Specify the start I/O number10H.
*12 "": Specify the CPU number (CPU No.1: 0, CPU No.2: 1, CPU No.3: 2, CPU No.4: 3)
*13 Only the mdrRandRLabel/mdrRandWLabel function can be used.
Index register (Z) 
Long index register (LZ) 
File register (R) 
*7 
(ZR)*8 
*7 
(ER\R)*9 
Link direct device*10 Link input (J\X) 
Link output (J\Y) 
Link relay (J\B) 
Link special relay (J\SB) 
Link register (J\W) 
Link special register (J\SW) 
Refresh data register (RD) 
Module access device Module access device/Intelligent function
module device (U\G)*11

Multiple CPU shared device (U3E\G)*12 
CPU buffer memory access
device*12
CPU buffer memory access device
(U3E\G)

CPU buffer memory access device (Fixed
cycle communication area) (U3E\HG)

Global label (GV) *13
(No device assigned)

Device name (Device)*1 Access target
(1) (2) (3) (4) (5)

14 1 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions
Argument specification
This section shows the argument specification of the MELSEC iQ-R series data link functions.
Channel
A channel implies a network and communication route to be used when communicating with a C intelligent function module.
A channel number is set for each module in a user program.
A channel to be used for MELSEC iQ-R series data link functions is as follows:
CPU number, network number, start I/O number, station number
CPU numbers, Network numbers, start I/O numbers and station numbers to be specified to MELSEC iQ-R series data link
functions are as follows:
*1 No error will occur even if the value is set.
*2 A specified control station of the network, which is specified to the network number, is accessed. To access a station that is actually
operating as the control station, specify the station number.
Device type
The following table shows the device types specified to the MELSEC iQ-R series data link functions.
Devices are defined in the header file (MDRFunc.h).
Either a code or a device name can be specified as a device type.
Channel
number
Network Communication route
12 Bus interface Used for communication via bus.
Access route CPU number Network
number
Start I/O number Station number
Bus interface Own station • 0:
Control CPU
specification
• 1 to 4:
Multiple CPU
specification
*1 *1 *1
CC-Link IE Controller Network Via single network 1 to 239 1 to 120,
0*2, 125*2
CC-Link IE Field Network 0 to 120
MELSECNET/H network 1 to 64,
0*2, 125*2
CC-Link *1 0000H to 00FEH 0 to 63
Device name (Device) Device type
Code Device name
Decimal Hexadecimal
Input relay (X) 11HDevX
Output relay (Y) 22HDevY
Latch relay (L) 33HDevL
Internal relay (M) 44HDevM
Special relay (SM) 55HDevSM
CPU buffer memory*1,*2 CPU No.1 area (U3E0\G) 501 1F5H DevSPB1
CPU No.2 area (U3E1\G) 502 1F6H DevSPB2
CPU No.3 area (U3E2\G) 503 1F7H DevSPB3
CPU No.4 area (U3E3\G) 504 1F8H DevSPB4
Fixed cycle communication area*1,*2 CPU No.1 area (U3E0\HG) 511 1FFH DevHSPB1
CPU No.2 area (U3E1\HG) 512 200H DevHSPB2
CPU No.3 area (U3E2\HG) 513 201H DevHSPB3
CPU No.4 area (U3E3\HG) 514 202H DevHSPB4
Annunciator (F) 66HDevF

1 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions 15
1
Timer Contact (TS) 7 7H DevTT
Coil (TC) 8 8H DevTC
Current value (T/TN) 11 BH DevTN
Long timer Contact (LTS) 41 29H DevLTT
Coil (LTC) 42 2AH DevLTC
Current value (LT/LTN) 43 2BH DevLTN
Counter Contact (CS) 9 9H DevCT
Coil (CC) 10 AH DevCC
Current value (C/CN) 12 CH DevCN
Long counter Contact (LCS) 44 2CH DevLCT
Coil (LCC) 45 2DH DevLCC
Current value (LC/LCN) 46 2EH DevLCN
Retentive timer Contact (STS, SS) 26 1AH DevSTT
Coil (STC, SC) 27 1BH DevSTC
Current value (ST/STN, ST/SN) 35 23H DevSTN
Long retentive timer Contact (LSTS) 47 2FH DevLSTT
Coil (LSTC) 48 30H DevLSTC
Current value (LST/LSTN) 49 31H DevLSTN
Data register (D) 13 DH DevD
Special register (SD) 14 EH DevSD
Index register (Z)*3 20 14H DevZ
Long index register (LZ)*3 38 26H DevLZ
File register (R)*3 22 16H DevR
File register (ZR)*3 220 DCH DevZR
Link relay (B) 23 17H DevB
Link register (W) 24 18H DevW
Link special relay (SB)*3 25 19H DevQSB
Link special register (SW)*3 28 1CH DevQSW
Edge relay (V) 30 1EH DevQV
Module refresh register (RD) 39 27H DevRD
Global label (GV) *5 For word, double word, and quad word size 600 258H DevGV
For bit 0 601 259H DevGV_0
For bit 1 602 25AH DevGV_1
For bit 2 603 25BH DevGV_2
For bit 3 604 25CH DevGV_3
For bit 4 605 25DH DevGV_4
For bit 5 606 25EH DevGV_5
For bit 6 607 25FH DevGV_6
For bit 7 608 260H DevGV_7
For bit 8 609 261H DevGV_8
For bit 9 610 262H DevGV_9
For bit A 611 263H DevGV_A
For bit B 612 264H DevGV_B
For bit C 613 265H DevGV_C
For bit D 614 266H DevGV_D
For bit E 615 267H DevGV_C
For bit F 616 268H DevGV_F
Device name (Device) Device type
Code Device name
Decimal Hexadecimal

16 1 COMMON ITEMS
1.3 MELSEC iQ-R Series Data Link Functions
*1 For Q12DCCPU-V, it is categorized as the device type for Q bus interface.
*2 The devices cannot be used for the mdrDevRst/mdrDevSet/mdrRandR/mdrRandW functions.
*3 Even if a non-existent device is specified in the mdrRandR function, the function may end normally.
(All of the bits turn ON in read data. For word devices, the read data is '-1'.)
*4 "": indicates a network number.
*5 Only the mdrRandRLabel/mdrRandWLabel function can be used.
Link direct device*3,*4
Argument value of device name (1 to 255):
Network number
Link input (J\X) 1001 to 1255 3E9H to 4E7H DevLX(1) to
DevLX(255)
Link output (J\Y) 2001 to 2255 7D1H to 8CFH DevLY(1) to
DevLY(255)
Link relay (J\B) 23001 to 23255 59D9H to 5AD7H DevLB(1) to
DevLB(255)
Link register (J\W) 24001 to 24255 5DC1H to 5EBFH DevLW(1) to
DevLW(255)
Link special relay (J\SB) 25001 to 25255 61A9H to 62A7H DevLSB(1) to
DevLSB(255)
Link special register (J\SW) 28001 to 28255 6D61H to 6E5FH DevLSW(1) to
DevLSW(255)
Intelligent function module device, module access device*3
Argument value of device name (0 to 255): Start I/O number 16.
29000 to 29255 7148H to 7247H DevSPG(0) to
DevSPG(255)
Device name (Device) Device type
Code Device name
Decimal Hexadecimal

1 COMMON ITEMS
1.4 Considerations on Interrupt Service Routine (ISR) 17
1
1.4 Considerations on Interrupt Service Routine (ISR)
Fully understand the restrictions of VxWorks, operating system, before creating a routine which will be executed in an
interrupt service routine (ISR: InterruptServiceRoutine) by using the C intelligent function module dedicated function for ISR.
To use another dedicated function by synchronizing it to an interrupt, implement the notification processing in a user program
and perform the processing in a task.
Setting an inappropriate value or executing a function other than a C intelligent function module dedicated
function for ISR from an interrupt service routine may cause the VxWorks runaway.

18 2 FUNCTION LIST
2.1 C Intelligent Function Module Dedicated Functions
2FUNCTION LIST
This chapter shows the functions used for C intelligent function modules.
2.1 C Intelligent Function Module Dedicated
Functions
The C intelligent function module dedicated functions are as listed below.
C intelligent function module dedicated functions
Function name Description Reference
CITL_ChangeFileSecurity To change the file access restriction status of a C intelligent function
module.
Page 22 CITL_ChangeFileSecurity
CITL_ClearError To clear errors of a C intelligent function module. Page 23 CITL_ClearError
CITL_DisableYInt To disable the routine registered with the CITL_EntryYInt function. Page 24 CITL_DisableYInt
CITL_EnableYInt To enable the routine registered with the CITL_EntryYInt function. Page 25 CITL_EnableYInt
CITL_EntryDedicatedInstFunc To register a routine to be executed using the dedicated instruction
(G(P).CEXECUTE).
Page 26 CITL_EntryDedicatedInstFunc
CITL_EntryTimerEvent To register a timer event. Page 27 CITL_EntryTimerEvent
CITL_EntryWDTInt To register a routine to be called when a user WDT error interrupt
occurs.
Page 29 CITL_EntryWDTInt
CITL_EntryYInt To register a routine to be called when an output signal (Y) interrupt
occurs.
Page 30 CITL_EntryYInt
CITL_FromBuf To read data from the buffer memory of a C intelligent function module. Page 31 CITL_FromBuf
CITL_GetCollectData To acquire data sampled in data sampling in each sequence scan. Page 32 CITL_GetCollectData
CITL_GetCounterMicros To acquire a 1 s counter value of a C intelligent function module. Page 34 CITL_GetCounterMicros
CITL_GetCounterMillis To acquire a 1 ms counter value of a C intelligent function module. Page 35 CITL_GetCounterMillis
CITL_GetErrInfo To acquire the error information of a C intelligent function module. Page 36 CITL_GetErrInfo
CITL_GetFileSecurity To acquire the file access mode of a C intelligent function module. Page 37 CITL_GetFileSecurity
CITL_GetIDInfo To acquire the individual identification information of a C intelligent
function module.
Page 38 CITL_GetIDInfo
CITL_GetLEDStatus To acquire the LED status of a C intelligent function module. Page 39 CITL_GetLEDStatus
CITL_GetSerialNo To acquire the serial number of a C intelligent function module. Page 40 CITL_GetSerialNo
CITL_GetSwitchStatus To acquire the switch status of a C intelligent function module. Page 41 CITL_GetSwitchStatus
CITL_GetTime To acquire the clock data (local time) of a C intelligent function module. Page 42 CITL_GetTime
CITL_GetUnitStatus To acquire the operating status of a C intelligent function module. Page 43 CITL_GetUnitStatus
CITL_MountMemoryCard To mount the SD memory card inserted to a C intelligent function
module.
Page 44 CITL_MountMemoryCard
CITL_RegistEventLog To register an event log in the event history of a control CPU module. Page 45 CITL_RegistEventLog
CITL_ResetWDT To reset the user WDT of a C intelligent function module. Page 46 CITL_ResetWDT
CITL_SetCollectData To set data to be sampled in data sampling in each sequence scan. Page 47 CITL_SetCollectData
CITL_SetLEDStatus To set the LED status of a C intelligent function module. Page 49 CITL_SetLEDStatus
CITL_SetSyncTimeStatus To set the operating status of time synchronization of a C intelligent
function module.
Page 50 CITL_SetSyncTimeStatus
CITL_ShutdownRom To shut down the standard ROM of a C intelligent function module. Page 51 CITL_ShutdownRom
CITL_StartCollectData To start data sampling in each sequence scan. Page 52 CITL_StartCollectData
CITL_StartWDT To set and start the user WDT of a C intelligent function module. Page 53 CITL_StartWDT
CITL_StopCollectData To stop data sampling in each sequence scan. Page 54 CITL_StopCollectData
CITL_StopWDT To stop the user WDT of a C intelligent function module. Page 55 CITL_StopWDT
CITL_SyncTime To synchronize the time of a C intelligent function module with that of a
control CPU module.
Page 56 CITL_SyncTime
CITL_SysClkRateGet To read the system clock rate specified with the CITL_SysClkRateSet
function from the flash ROM.
Page 57 CITL_SysClkRateGet
CITL_SysClkRateSet To store the specified system clock rate in the flash ROM. Page 58 CITL_SysClkRateSet