Toshiba MD911 User manual

6F8C1399
Instruction Manual
MODBUS (MD911) Module
Unied Controller
nv Series

Notes
(1) The technical information provided herein describes typical operations and applications of the product and does not
guarantee the intellectual property rights or other rights of Toshiba or third parties nor allows license of its use.
(2) No part or the whole of this document may be reproduced without prior consent.
(3) The information herein may be changed in the future without notice.
(4) All possible measures have been taken to prepare the information herein. If you have any question, comment, or nd any
error, please contact us.
PROSEC, TOSLINE, TOSDIC, CIEMAC are trademarks or registered trademarks of Toshiba Corporation.
Microsoft, Windows are registered trademarks of Microsoft Corporation in the U.S. and other countries.
PROFIBUS is a registered trademark of PROFIBUS User Organization.
Anybus and NetTool are trademarks or registered trademarks of HMS Industrial Networks.

Unified Controller nv series MODBUS (MD911) Module Instruction Manual i
Safety Precautions
On the product and this operation manual, important information for safe and correct use to
prevent danger to the user and other people as well as property damage is described.
Understand the following information (signs and symbols) before reading the text, and follow the
described items.
Description of signs
Sign Description
DANGER Indicates that failure to avoid it will result in an immediate risk of death or
serious injury(*1).
WARNING Indicates that failure to avoid it will result in a risk of death or serious injury(*1).
CAUTION Indicates that failure to avoid it will result in a risk of light or medium injury(*2) or
only property damage(*3).
*1: A serious injury indicates loss of sight, injury, burns (high/low temperature), electric shock, broken
bones, or intoxication that will have aftereffects and require hospitalization or long-term hospital visits
for healing.
*2: An injury indicates an injury, burn, or electric shock that does not need hospitalization or long-term
hospital visits for healing.
*3: A property damage indicates consequential damage in terms of breakage of properties or materials.
Description of symbols
Symbol Meaning
Prohibition
Indicates “Prohibition” or “You must not do”.
Specific details are indicated near the symbol with pictures and text.
Mandatory
Indicates “Mandatory Action” or “Do as indicated”.
Specific details are indicated near the symbol with pictures and text.
Warning
Indicates Warning.
Specific details are indicated near the symbol with pictures and text.
(Note) Descriptions of Prohibition, Mandatory Action, and Warning vary depending on the display on the
main unit.

6F8C1399
ii
1. Safety Precautions on Installation
WARNING
Ground
Ground the device.
Otherwise, it may cause an electric
shock or fire.
CAUTION
Prohibited
Do not install, store, or use it in
the following environments.
・A place with a lot of dust
・A place with corrosive gases (SO2,
H2S) or flammable gases
・A place with vibrations and shocks
exceeding the allowed values
・A place with condensations due to
rapid temperature changes
・A place with low or high temperature
outside of the installation condition
・A place with high humidity outside of
the installation condition
・A place with direct sunlight
・A place near equipment generating
strong radio waves or magnetic fields
It may cause accidents.
Mandatory
Install the device in a place
where maintenance and
inspection can be done easily.
It may cause accidents.
Prohibited
Do not block the ventilation
hole or air inlet/outlet.
It may cause fire or failure due to
overheat.
Mandatory
For installation and wiring of
the system, observe the
installation
Otherwise, it may cause a fall, fire,
failure, or malfunction.

Unified Controller nv series MODBUS (MD911) Module Instruction Manual iii
2. Safety Precautions on Maintenance and Inspection
WARNING
Mandatory
When installing or removing
the module after wiring, make
sure that the external power
supply is off.
Otherwise, there will be live electric
poles on the back of the external
terminal block of the module, causing
an electric shock.
CAUTION
Prohibited
Do not drop, crush, or apply
strong shocks to the device
or board.
Otherwise it will cause failure.
Mandatory
Before touching the device or
board, touch a grounded
metal to discharge the static
electricity of your body.
Otherwise, it may cause malfunction or
failure due to static electricity.
Mandatory
Wipe off stain on the device,
module, or board with a soft
cloth.
For severe stain, use a wet
cloth wrung tightly.
Leaving them stained may cause wrong
decision or malfunction.
Mandatory
Place a board or module
removed from the unit or
base unit on a conductive mat
or conductive bag (used for a
backup board) on a grounded
table.
Otherwise, parts may be damaged due
to static electricity.
Prohibited
Do not use benzene or
thinner to remove stain on
device, module, or board.
It may cause deformation or
discoloration of the device panel,
module, or board.

6F8C1399
iv
3.
Safety Precautions on Replacement of Life Limited Parts
WARNING
Mandatory
If the device has power fuses
or alarm fuses, when
replacing them, turn off the
switch of the device.
Otherwise, it may cause an electric
shock or fire.
4. Safety Precautions on Daily Use
WARNING
No touch
Do not touch the terminals of
the module and unit during
energization.
It may cause an electric shock.
Prohibited
Do not modify, repair,
disassemble, or adjust the
device, module, or board.
It may cause an electric shock, fire,
injury, or failure.
Upon faulty operation or failure, contact
Toshiba's branch office or service
offices.
Mandatory
Before using, check that the
power capacity, frequency,
voltage, and regulation
comply with the device
specifications.
If not, it may cause damage of the
device, or fire due to overheat, as well
as not obtaining the original
performance of the device.
Mandatory
When the ambient or internal
temperature of the device
rises abnormally or failure
occurs in the device, stop
using the device, turn off the
power, and contact one of
Toshiba's service
representatives.
Using it as it is may cause fire due to
overheat.
No touch
Do not touch the terminals of
the module and unit during
energization.
It may cause an electric shock.
The power supply module is for the nv
series only. Do not use it alone for any
other purposes.

Unified Controller nv series MODBUS (MD911) Module Instruction Manual v
CAUTION
Prohibited
Do not touch anything other
than the operation part
(setting switches inside the
module), such as the IC parts
and terminals, connectors,
and soldered surfaces inside
the module.
Doing so may result in electrostatic
breakdown of the ICs and LSIs,
causing failure. Also, an injury may
occur due to the ends of the part lead
wires, or burns may occur due to hot
parts.
Prohibited
Do not disassemble or modify
the device or module.
It may cause malfunction or failure as
well as loss of safety of the device.
Prohibited
Do not forcefully bend, pull,
or twist the power cord and
cables.
It may cause breaks or heating.
Prohibited
Do not insert any metal into
the gaps of the device main
body.
It may cause fire.
5. Safety Precautions on Transportation, Storage, and Disposal
CAUTION
Mandatory
Observe ordinances and
rules.
When destroying the product, observe
the ordinances and rules of the local
government.
Prohibited
For transportation and
storage of the product, use a
conductive bag and
packaging box.
Otherwise it will cause failure.

6F8C1399
vi
Restrictions on Application
■This product is not developed/manufactured for use in systems involving devices that directly affect
human life (Note 1).
■To use this product for systems that involve devices that significantly affect human safety or
maintenance of public functions (Note 2), special considerations (Note 3) are required in system
operation, maintenance, and management. In this case, contact one of Toshiba's sales
representatives.
(Note 1) Devices that directly affect human life include the following.
· Medical devices such as life supporting devices and devices for surgical units.
(Note 2) Systems that involve devices that significantly affect human safety or maintenance of public
functions include the following.
· Main unit control systems of nuclear power plants, safety protection systems of nuclear
facilities, and other systems that are critical for safety
· Operation control systems of mass transportation systems and air traffic control systems
(Note 3) Special considerations indicate sufficient discussions with Toshiba's engineers to construct a
safe system (e.g. employing fool-proof design, fail-safe design, or redundant design).
Disclaimer
■Toshiba shall not be responsible for any damage caused by fire or earthquake, acts of a third party,
other accidents, the user's willful acts or negligence, misuse, or use in abnormal conditions.
■Toshiba shall not be responsible for any incidental damage (loss of business profits, interruption of
business, change or loss of stored memory) caused by use of or being unable to use this product.
■Toshiba shall not be responsible for any damage caused by failure to observe the information described
in the operation manual.
■Toshiba shall not be responsible for any damage caused by malfunctions due to combination with any
connected device.
■Toshiba shall not be responsible for any damage caused by malfunctions due to combination with any
application program created by the customer.
Note
Use your cellular phone or PHS 1 meter or more away from the product main unit in operation,
various transmission cables, and I/O bus cable. Otherwise, the system may malfunction.

Unified Controller nv series MODBUS (MD911) Module Instruction Manual vii
This manual describes the functions, methods of installation and setting, and maintenance and inspection
of the MODBUS (MD911) module ("MD911 module" hereafter) for connecting the information/control
network MODBUS to the Unified Controller nv series.
To use this device correctly, read "Safety precautions" first.
The manuals related to the MD911 module are as follows.
· Unified Controller nv series Controller Unit Instruction Manual (6F8C1220)
Describes the main unit hardware of the nv series controller.
· Unified Controller nv series Controller type1 Functional Manual (6F8C1221)
Describes the functions and basic use of the nv series type 1.
· Unified Controller nv series type2 Functional Manual (6F8C1362)
Describes the functions and basic use of the nv series type 2.
· Unified Controller nv series Integrated Controller V series Programming Instructions (LD/FBD/SFC/ST)
(6F8C1226)
Describes the detailed specifications of the instruction words of the program languages (LD, FBD, and
SFC) supported by the nv series and Integrated Controller V series.
· Unified Controller nv series Integrated Controller V series Engineering Tool 4 −Basic−(6F8C1290)
Describes how to create, debug, print, and save programs using nV-Tool.
Introduction

6F8C1399
viii
●Notational conventions
The following are the notational conventions for better understanding of this document.
◆Important: Describes what the user should be particularly aware of to handle the product
correctly.
Note: Describes what the user should observe to handle the product correctly.
Remark: Describes a remark.
●Reading this document
This document consists of the following chapters.
· Chapter 1 Introducing the MD911 module
Describes the functions, characteristics, and names and functions of the parts.
· Chapter 2 Installation and wiring
Describes how to install it to the basic unit and how to connect cables.
· Chapter 3 Setting
Describes how to set the switches and parameters to use the module correctly.
· Chapter 4 Operation
Describes the operations such as checking before operation, startup, and shutdown.
· Chapter 5 Troubleshooting
Describes troubleshooting such as what to do when failure occurs.
· Chapter 6 Maintenance and inspection
Describes troubleshooting regarding daily inspection and periodical inspection and how
to perform inspections.
· Chapter 7 Application interface
Describes the user application interface and usage constraints.

Unified Controller nv series MODBUS (MD911) Module Instruction Manual ix
Chapter 1
Introducing the
MD911 Module
…1
1.1 Functions and Characteristics of the MD911 Module ····2
1.2 Names and Functions of the Parts······································4
1.2.1 Names of the parts ··························································4
1.2.2 Functions of the parts ······················································5
Chapter 2
Installation and
Wiring
…7
2.1 Types of I/O Base Units ························································10
2.2 Installing the Module····························································· 11
2.3 Replacing the Module ···························································14
2.4 Connecting the MODBUS Transmission Cable ·············15
2.4.1 Connecting RS-232C Cable ··········································15
2.4.2 Connecting RS485-2W(RS485 2Wires) Cable ·············15
2.4.3 Connecting RS485-4W(RS485 4Wires) Cable ·············15
Chapter 3
Setting
…17
3.1 Switch Setting ·········································································18
3.1.1 TC-net I/O bus address switch (I/O)······························18
3.1.2 Node address setting switch (STN-H, STN-L) ··············18
3.1.3 Operation mode setting switch (MODE)························19
3.1.4 Maintenance switch (MAINT) ········································19
3.2 Network Parameter Setting ·················································20
3.2.1 MODBUS station address ·············································20
3.3 Setting with the Engineering Tool (master mode) ········21
3.3.1 Module Parameter Setting·············································22
3.3.2 Adding of network ··························································28
3.3.3 Setting network variables ··············································30
3.3.4 Setting MD911 RAS variables ·······································33
3.4 Setting with the Engineering Tool (slave mode)············35
3.4.1 Module Parameter Setting·············································36
3.4.2 Adding of network ··························································41
3.4.3 Setting network variables ··············································43
3.4.4 Setting MD911 RAS variables ·······································46
Chapter 4
Operation
…49

6F8C1399
x
Chapter 5
Troubleshooting
…51
Chapter 6
Maintenance and
Inspection
…53
6.1 Inspection·················································································55
6.1.1 Daily inspection······························································55
6.1.2 Periodical inspection······················································55
6.2 Life Limited Parts ···································································56
Chapter 7
Application
Interface
…57
7.1 Usage Constraints ·································································58
7.1.1 Constraint on the number of units installed ···················58
7.1.2 Combination of firmware version···································58
7.2 Assignment of MD911 Management Blocks···················59
7.3 Data Flow (MD911 master mode) ·······································61
7.4 Data Flow (MD911 slave mode) ··········································65
Appendix A
Specifications
…69
A.1 General Specifications ····························································· 70
A.2 MD911 Transmission Specifications··································· 71
A.3 Function Specifications ··························································· 72
A.4 Serial Communication Port (RS-232C)
Transmission Specifications·················································· 72
Appendix B
Outside Dimensions
…73
Appendix C
Related Products
…75
Appendix D
Decimal-
hexadecimal
Conversion Table
…77

1
Chapter 1
Introducing the MD911
Module
This chapter describes the functions, characteristics, and names
and functions of the MD911 module.
1.1 Functions and Characteristics of the MD911 Module ······ 2
1.2 Names and Functions of the Parts ········································ 4
1.2.1 Names of the parts····························································· 4
1.2.2 Functions of the parts························································· 5

Chapter 1 Introducing the MD911 Module
6F8C1399
2
1.1 Functions and Characteristics of the MD911 Module
The MODBUS module MD911 is a device to connect the controller main unit of the
Unified Controller nv series to MODBUS.
The Unified Controller nv Series can communicate with other devices on the
MODBUS system via the MD 911.
■Characteristics of the MD911 module
The Unified Controller nv Series MD911 allows you to configure transmission
paths using RS232C and RS485.
The MD911 module has the following characteristics.
・MODBUS protocol
The Modbus protocol is a communication protocol developed by Modicon Inc.
(AEG Schneider Automation International S.A.S.) for PLCs.
This module can be used to exchange data with external devices with the Modbus
interface. The MD911 supports the Modbus RTU protocol.
・Operation mode
The MD911 supports the master mode and slave mode of the Modbus protocol.
The operation mode can be set with the engineering tool.
・Supported functions
The MD911 supports the coil state read, input relay state read, retention register
content read, input register content read, single coil state change, single retention
register write, multiple coil state change, and multiple retention register write
functions. The functions can be set with the engineering tool.

1.1 Functions and Characteristics of the MD911 Module
Unified Controller nv series MODBUS (MD911) Module Instruction Manual 3
■Example of system configuration
Figure 1-1 System configuration example
TC-net I/O loop
RS485 (4W/2W)
RS232C
SA911
I/O
I/O
I/O
I/O
MODBUS
produc
t
SA911
MD911
Unified
Controller
TC-ne
t
I/O bus

Chapter 1 Introducing the MD911 Module
6F8C1399
4
1.2 Names and Functions of the Parts
1.2.1 Names of the parts
Figure 1-2 shows the names of the parts of the MD911 module.
Figure 1-2 Names of the parts of the MD911 module
State display LED
・RUN
・ERR
・I/O
・TX
・RX
・MOD
TC-net I/O bus address setting switch
・I/O
Mode setting switch
・MODE
Serial communication por
t
・TOOL
MODBUS RS-485 I/F terminal block
MODBUS station address setting switch
・STN-H
・STN-L
Maintenance switch
MODBUS RS-232C I/F connector
MD911
TX RX MOD
RUN ERR I/O
STN-H
STN-L
I/O
TOOL
MODE
MODBUS
RS-232C
MODBUS
RS-485
MAINT
↓RUN
2W/4W
D1/TXD1
D0/TXD0
- /RXD1
- /RXD0
GND
1
2
3
4
5

1.2 Names and Functions of the Parts
Unified Controller nv series MODBUS (MD911) Module Instruction Manual 5
1.2.2 Functions of the parts
The major functions of the parts are as shown below.
■State display LED
Table 1-1 Display details on the state display LED and normal display
Name Display Normal
display
RUN
(green)
Displays the hardware operation state.
ON: Running
OFF: Down *1
ON
ERR
(red)
Displays the hardware operation state.
ON: Down
OFF: Running *1
OFF
I/O (green) I/O bus transmission
ON: TC-net I/O bus side scan transmission is being
executed successfully
OFF: TC-net I/O bus side scan transmission is being
suspended
ON
TX (green) Displays the data transmission state.
ON: Transmitting data
OFF: Not transmitting data *2
ON/OFF
RX (green) Displays the data reception state.
ON: Receiving data
OFF: Not receiving data *2
ON/OFF
MOD(green) Displays the communication state.
ON: All user requests are erroneous.
Blinking: Some user requests are erroneous.
OFF: Communication normal *2
OFF
(Note1) Check the LED states from the front.
(Note2) All LED’s described to the above-mentioned table turn OFF, when the maintenance
switch is upward position.
*1 Waiting for downloading, when RUN and ERR turn on simultaneously.
*2 Engineering data setting error, when TX, RX and MOD brink simultaneously.

Chapter 1 Introducing the MD911 Module
6F8C1399
6
■TC-net I/O bus address setting switch (I/O)
It specifies the address of the TC-net I/O bus of the MD911 in hexadecimal.
The setting method is described in Chapter 3 "Setting."
■MODBUS station address setting switch (STN-H, STN-L)
It specifies the address of the MD911 on the MODBUS network in hexadecimal.
The setting method is described in Chapter 3 "Setting."
■Operation mode setting switch (MODE)
It specifies the operation mode. The setting method is described in Chapter 3
"Setting."
■Serial communication port RS-232C (TOOL)
A RS-232C port for maintenance. The connector is a 9-pin D-sub connector
(socket).
■MODBUS RS-232C I/F
A communication port for MODBUS. It is used for RS-232C connection.
■MODBUS RS-485 I/F terminal block
A communication port for MODBUS. It is used for RS-485 connection.
■Maintenance switch(MAINT)
It is used for installation and replacement of the module. It is described in
Chapter 2 "Installation and Wiring."

7
Chapter 2
Installation and Wiring
This chapter describes installation and wiring methods of the MD911
module.
Before installation and wiring, read this operation manual thoroughly.
2.1 Types of I/O Base Units··························································· 10
2.2 Installing the Module ······························································· 11
2.3 Replacing the Module······························································ 14
2.4 Connecting the MODBUS Transmission Cable················ 15
2.4.1 Connecting RS-232C Cable ············································ 15
2.4.2 Connecting WS485-2W (RS485 2wires) Cable··············· 15
2.4.3 Connecting WS485-4W (RS485 4wires) Cable··············· 15

Chapter 2 Installation and Wiring
6F8C1399
8
WARNING
Before installing or removing the module,
make sure that the basic unit to which the
MD911 module is installed is turned off.
Otherwise, it may cause an electric shock.
Mandatory
WARNING
Do not touch the interior of the product
except the switches.
It may cause an electric shock.
Prohibited
CAUTION
Install it under an environment that satisfies
the product specifications.
When installing it under an environment that does not
satisfy the product operating temperature range, apply
forced cooling with cooling equipment.
Operating temperature range: 0 to 55C
Prohibited
CAUTION
Before installation or wiring, remove the
static electricity from your body.
The static electricity accumulated in the human body may
cause failure of the product.
Prohibited
CAUTION
Do not touch the cables carelessly.
Applying stress to the cables may cause malfunction or
accidents.
Prohibited
CAUTION
Do not perform wiring, insertion of the
TC-net I/O bus cable connector, or
installation, removal, or replacement of the
base unit while the power is on.
It may cause an electric shock or malfunction.
When installing the product to the base unit, be careful not
to snap or bend the TC-net I/O bus connector pins.
Prohibited
CAUTION
When installing the product to the basic
unit, do not break or bend the pins of the
TC-net I/O bus connector.
Prohibited
CAUTION
If it is difficult to insert the module to the
basic unit, remove it once and try again
rather than forcing it.
Prohibited