This manual confers no industrial property rights or any rights of any other kind,
nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be
held responsible for any problems involving industrial property rights which may
occur as a result of using the contents noted in this manual.
Warranty
Exclusion of loss in opportunity and secondary loss from warranty liability
Regardless of the gratis warranty term, Mitsubishi shall not be liable for compensation to:
(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.
(2) Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi products.
(3) Special damages and secondary damages whether foreseeable or not, compensation for
accidents, and compensation for damages to products other than Mitsubishi products.
(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe use
This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
This product has been manufactured under strict quality control. However
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.
HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Side
A
Side
B
JAPANESE
ENGLISH
JY997D24901E
Side
B
FX
3U
-32DP
INSTALLATION MANUAL
Before installation, operation, maintenance or inspection of this product,
thoroughly read through and understand this manual and the associated manuals.
Also, take care to handle the module properly and safely.
Store this manual in a safe place so that it can be taken out and read whenever
necessary. Always forward it to the end user.
Registration
The company name and the product name to be described in this manual are the
registered trademarks or trademarks of each company.
Effective March 2018
Specifications are subject to change without notice.
2007 Mitsubishi Electric Corporation
Manual Number JY997D24901
Revision
E
Date
March 2018
Safety Precautions
(Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and
.
Depending on circumstances, procedures indicated by
may also
cause severe injury.
It is important to follow all precautions for personal safety.
Associated Manuals
Indicates that incorrect handling may cause hazardous
conditions, resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous
conditions, resulting in medium or slight personal injury or
physical damage.
Manual name
Manual No.
Description
FX
3G
Series
User’s Manual
- Hardware Edition
JY997D31301
MODEL CODE:
09R521
Describes FX
3G
Series PLC
specification details for I/O, wiring,
installation, and maintenance.
FX
3GC
Series
User’s Manual
- Hardware Edition
JY997D45401
MODEL CODE:
09R533
Describes FX
3GC
Series PLC
specification details for I/O, wiring,
installation, and maintenance.
FX
3U
Series
User’s Manual
- Hardware Edition
JY997D16501
MODEL CODE:
09R516
Describes FX
3U
Series PLC
specification details for I/O, wiring,
installation, and maintenance.
FX
3UC
Series
User’s Manual
- Hardware Edition
JY997D28701
MODEL CODE:
09R519
Describes FX
3UC
Series PLC
specification details for I/O, wiring,
installation, and maintenance.
MELSEC iQ-F
FX5U User's Manual
(Hardware)
JY997D55301
MODEL CODE:
09R536
Describes FX5U CPU module
specification details for I/O, wiring,
installation, and maintenance.
MELSEC iQ-F
FX5UC User's
Manual (Hardware)
JY997D61401
MODEL CODE:
09R558
Describes FX5UC CPU module
specification details for I/O, wiring,
installation, and maintenance.
FX
3S
/FX
3G
/FX
3GC
/
FX
3U
/FX
3UC
Series
Programming
Manual - Basic &
Applied Instruction
Edition
JY997D16601
MODEL CODE:
09R517
Describes PLC programming for
basic/applied instructions and
devices.
MELSEC iQ-F FX5
Programming
Manual (Instructions,
Standard Functions/
Function Blocks)
JY997D55801
MODEL CODE:
09R539
Describes specications of
instructions and functions that can
be used in programs.
How to obtain manuals
For product manuals or documents, contact with the Mitsubishi Electric dealer you
purchased your product.
Certification of UL, cUL standards
The following product has UL and cUL certification.
UL, cUL File Number: E95239
Regarding the standards that comply with the main unit, please refer to either the FX
series product catalog or consult with your nearest Mitsubishi product provider.
Compliance with EC directive (CE Marking)
This note does not guarantee that an entire mechanical module produced in
accordance with the contents of this note will comply with the following standards.
Compliance to EMC directive and LVD directive for the entire mechanical module
should be checked by the user / manufacturer. For more details please contact the
local Mitsubishi Electric sales site.
Requirement for the compliance with EMC directive
The following products have shown compliance through direct testing (of the identified
standards below) and design analysis (through the creation of a technical construction
file) to the European Directive for Electromagnetic Compatibility (2014/30/EU) when
used as directed by the appropriate documentation.
Attention
This product is designed for use in industrial applications.
Type:
Programmable Controller (Open Type Equipment)
Models:
MELSEC FX
3U
series manufactured
from March 1st, 2007
FX
3U
-32DP
Cautions for compliance with EC Directive
Installation in Enclosure
Programmable controllers are open-type devices that must be installed and used
within conductive control cabinets. Please use the programmable controller while
installed within a conductive shielded control cabinet. Please secure the cabinet
door to the control cabinet (for conduction). Installation within a control cabinet
greatly affects the safety of the system and aids in shielding noise from the
programmable controller.
Control cabinet
- The control cabinet must be conductive.
- Ground the control cabinet with the thickest possible grounding cable.
- To ensure that there is electric contact between the control cabinet and its door,
connect the cabinet and its doors with thick wires.
- In order to suppress the leakage of radio waves, the control cabinet structure
must have minimal openings. Also, wrap the cable holes with a shielding cover or
other shielding devices.
- The gap between the control cabinet and its door must be as small as possible by
attaching EMI gaskets between them.
*1 These wires are used to improve the conductivity between the door and control cabinet.
Caution for wiring
To avoid malfunctions by noise, lay the twisted-pair PROFIBUS cable so that more
than 50 mm (1.97") is touching the grounding plate connected to the ground terminal.
For details on wiring, refer to Section 3.2
Manual name
Manual No.
Description
FX
3U
-32DP
User’s Manual
JY997D25201
Describes details for the FX
3U
-32DP
PROFIBUS-DP Interface Block, i.e.
wiring, installation, specification and BFM
allocations.
FX
3U
-64DP-M
User’s Manual
JY997D19201
Describes details for the FX
3U
-64DP-M
PROFIBUS-DP Master Block, i.e. wiring,
installation, specification and BFM
allocations.
GX Configurator-DP
Configuration
System for Open
Networks Software
Manual
-
Describes the operation of GX
Configurator-DP Configuration System
for Open Networks Software.
Standard
Tests
EN61131-2:2007
Programmable controllers
- Equipment requirements and
tests
Compliance with all relevant aspects of the standard.
EMI
Radiated Emission
Conducted Emission
EMS
Radiated electromagnetic field
Fast transient burst
Electrostatic discharge
High-energy surge
Voltage drops and interruptions
Conducted RF
Power frequency magnetic field
Shielding cover
Shielded cable
Wires
*1
EMI gasket
1. Introduction
The FX
3U
-32DP PROFIBUS-DP Interface Block (hereinafter called 32DP) enables
users to integrate the MELSEC FX
3G
/FX
3GC*1
/FX
3U
/FX
3UC*1
/FX5U
*2
/FX5UC
*2
PLC
into any existing PROFIBUS- DP network (DP-V0/DP-V1) as a DP-Slave.
The 32DP links the FX
3G
/FX
3GC*1
/FX
3U
/FX
3UC*1
/FX5U
*2
/FX5UC
*2
PLC with
PROFIBUS-DP decentralized control tasks. The module connects the PLC system to
the DP-Master in the PROFIBUS-DP network for efficient and easy data exchange.
For details, refer to FX
3U
-32DP User's Manual
*1 An FX
2NC
-CNV-IF or FX
3UC
-1PS-5V is necessary to connect to the 32DP with
the FX
3GC
/FX
3UC
Series PLC.
However, the 32DP cannot be connected to the FX
3UC
-32MT-LT(-2).
*2 An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect to the 32DP with
the FX5U/FX5UC PLC.
1.1 Incorporated Items
1.2 External Dimensions and Part Names
1.3 Pin configuration of PROFIBUS-DP Connector
The connector is a 9-pin D-SUB (#4-40unc inch screw thread) type, with the following
pin assignment.
Included Item
FX
3U
-32DP
1 unit
GSD file (CD-ROM)
1 piece
Special Unit/Block No. label
1 sheet
Dust proof sheet
1 sheet
Manuals (Japanese version, English version)
1 manual each
[1] PROFIBUS-DP port (9-pin D-SUB Connector: #4-40unc inch screw thread)
[2] Extension cable
[3] Direct mounting hole:2 holes of
4.5 (0.18") (mounting screw: M4 screw)
[4] Status LED
[5] Extension port under the top cover
[6] Name plate
[7] DIN rail mounting groove (DIN rail: DIN46277)
[8] DIN rail mounting hook
43 (1.7")
9 (0.36")
90 (3.55")
80 (3.15")
4 (0.16")
2-
4.5
87 (3.43")
89 (3.51")
Dimensions: mm (inches)
MASS (Weight): Approx. 0.2 kg (0.44 lbs)
32
[7]
[8]
[5]
[6]
[3]
[4]
[2]
[1]
LED Name
Color
Description
POWER
Green
ON: Correct power supply from the PLC
For other status, refer to FX
3U
-32DP
User's Manual
FROM/TO
Green ON: Constant FROM/TO access within 200ms intervals
RUN
Green
ON: In cyclic data exchange mode
Flashing: DP-Master is in clear mode, or DP-Slave is in
Fail/Safe state.
DIA
Red
OFF: Normal Operation without errors
Otherwise: An error detected
For error details, refer to FX
3U
-32DP
User's Manual
TOKEN
Green ON: Estabilished connection with the DP-Master
Assigned
Not assigned
67
9
8
12
3
5
4
Pin No.
Signal Name
Meaning
3
RXD/TXD-P
Receive/Transmit-Data-P
4
RTS
Ready to send
5
DGND
Data Ground
6
VP
Voltage-Plus (5V, 90mA)
8
RXD/TXD-N
Receive/transmit-Data-N
1, 2, 7, 9
NC
Pin not assigned
2. Installation
2.1 Connection with PLC
The FX
3U
-32DP connects on the right side of a PLC main unit or extension unit/
block (including special function units/blocks).
An FX
2NC
-CNV-IF or FX
3UC
-1PS-5V is necessary to connect to the 32DP with the
FX
3GC
/FX
3UC
Series PLC. However, the 32DP cannot be connected to the
FX
3UC
-32MT-LT(-2).
An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect to the 32DP with
the FX5U/FX5UC PLC.
For details, refer to the respective PLC manual.
FX
3G
Series User's Manual - Hardware Edition
FX
3GC
Series User's Manual - Hardware Edition
FX
3U
Series User's Manual - Hardware Edition
FX
3UC
Series User's Manual - Hardware Edition
MELSEC iQ-F FX5U User's Manual (Hardware)
MELSEC iQ-F FX5UC User's Manual (Hardware)
2.2 Mounting
The 32DP can be mounted on a DIN rail (DIN46227) or mounted directly to the
mounting surface with screws.
FX
3G
Series User's Manual - Hardware Edition
FX
3GC
Series User's Manual - Hardware Edition
FX
3U
Series User's Manual - Hardware Edition
FX
3UC
Series User's Manual - Hardware Edition
MELSEC iQ-F FX5U User's Manual (Hardware)
MELSEC iQ-F FX5UC User's Manual (Hardware)
2.2.1
Direct Mounting
The 32DP can be directly mounted with M4 screws.
An interval space of 1 to 2 mm (0.04” to 0.08”) between each unit is necessary.
For details on the mounting hole pitch, refer to Section 1.2
2.2.2
DIN Rail Mounting
The 32DP can be mounted on a DIN rail (DIN46227, 35mm width).
1) Fit the upper edge of the DIN rail mounting
groove (right fig. A) onto the DIN rail.
2) Push the product onto the DIN rail.
INSTALLATION
PRECAUTIONS
Cut off all phases of the power supply externally before installation or wiring
work in order to avoid damage to the product or electric shock.
INSTALLATION
PRECAUTIONS
Use the product within the generic environment specifications described in
the PLC main unit manual (Hardware Edition).
Never use the product in areas with excessive dust, oily smoke, conductive
dusts, corrosive gas (salt air, Cl
2
, H
2
S, SO
2
or NO
2
), flammable gas,
vibration or impacts, or expose it to high temperature, condensation, or rain
and wind.
If the product is used in such conditions, electric shock, fire, malfunctions,
deterioration or damage may occur.
Install the product securely using the DIN rail or screws.
Install the product on a flat surface. If the mounting surface is rough, undue
force will be applied to the PC board, thereby causing nonconformity.
When drilling screw holes or wiring, make sure or cutting or wire debris does
not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Be sure to remove the dust proof sheet from the PLC's ventilation slits when
installation work is completed.
Failure to do so may cause fire, equipment failures or malfunctions.
Connect the extension cables and communication cables securely to the
designated connectors. Contact failures may cause malfunctions.
Do not touch the conductive parts of the product directly to avoid failure or
malfunctions.
1)
2)
A
3) Connect the 32DP’s extension cable to the
extension port of the main unit, I/O extension
unit/block, or special function unit/block.
FX
3G
Series User's Manual
- Hardware Edition
FX
3GC
Series User's Manual
- Hardware Edition
FX
3U
Series User's Manual
- Hardware Edition
FX
3UC
Series User's Manual
- Hardware Edition
MELSEC iQ-F FX5U User's Manual
(Hardware)
MELSEC iQ-F FX5UC User's Manual
(Hardware)
3. Wiring
3.1 Applicable Cable and Connector
The following table shows the applicable cable and connector for a PROFIBUS-
DP network.
3.2 Wiring
To connect the 32DP to a PROFIBUS-DP network, use the PROFIBUS connector
and shielded twisted-pair PROFIBUS cable complying with EN50170.
DESIGN
PRECAUTIONS
Make sure to observe the following precautions in order to prevent any
damage to the machinery or accidents due to abnormal data written to the
PLC under the influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the main
circuit, high-voltage line, or load line.
Otherwise, noise disturbance and/or surge induction are likely to take
place. As a guideline, lay the control line at least 100mm (3.94") or more
away from the main circuit, high-voltage line, or load line.
2) Ground the shield wire or shield of the shielded cable at one point on the
PLC. However, do not ground them at the same point as the high-voltage
lines.
Install module so that excessive force will not be applied to the peripheral
device connectors. Failure to do so may result in wire damage/breakage or
PLC failure.
WIRING
PRECAUTIONS
Cut off all phases of the power supply externally before installation or wiring
work in order to avoid damage to the product or electric shock.
WIRING
PRECAUTIONS
When drilling screw holes or wiring, make sure cutting or wire debris does not
enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Item
Description
PROFIBUS-DP
network cable
Shielded twisted-pair PROFIBUS cable complying with
EN50170
Connector
Applicable only to PROFIBUS connector
(9-pin D-SUB Connector: #4-40unc inch screw thread)
For PROFIBUS connectors see
the PROFIBUS connector manual
Shielded twisted-pair
PROFIBUS cable
complying with EN50170
to Profibus-DP network
Grounding resistance of 100
Ω
or less
(Class D)
For noise prevention please
attach at least 50 mm
(1.97") of the twisted-pair
PROFIBUS cable along the
grounding plate to which the ground
terminal is connected.
Shielded twisted-
pair PROFIBUS
cable to
PROFIBUS-DP
network
PROFIBUS connector
FX
3U
-32DP
PROFIBUS-DP Interface Block
Grounding plate
FX
3U
-32DP
PROFIBUS-DP
Interface Block
FX
3G
/FX
3GC
/
FX
3U
/FX
3UC
/
FX5U/FX5UC
PLC
3.3 Grounding
Ground the cable as stated below.
Use a grounding resistor of 100
or less.
Ground the cables indepently for best results.
When independent grounding is not used, use "shared grounding" as follows.
For details, refer to the FX
3G
Series User's Manual - Hardware Edition.
For details, refer to the FX3
GC
Series User's Manual - Hardware Edition.
For details, refer to the FX
3U
Series User's Manual - Hardware Edition.
For details, refer to the FX
3UC
Series User's Manual - Hardware Edition.
For details, refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
For details, refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
The grounding wire size should be AWG 14 (2 mm
2
) or larger.
The grounding point should be as close to the PLC as possible, and all grounding
wire should be as short as possible.
3.4 Bus Terminator
To avoid the signal reflections, connect a self-terminating DP-Connector/Device at
each end of the PROFIBUS-DP Network.
Note
The FX
3U
-32DP is not self-terminated.
4. Specifications
DESIGN
PRECAUTIONS
Make sure to have the following safety circuits outside of the PLC to ensure safe
system operation even during external power supply problems, communication
errors or PLC failure. Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection
circuit, an interlock circuit for opposite movements (such as normal vs.
reverse rotation), and an interlock circuit (to prevent damage to the equipment
at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer
error, during self-diagnosis, all outputs are turned off. Also, when an error that
cannot be detected by the PLC CPU occurs in an input/output control block,
output control may be disabled. External circuits and mechanisms should be
designed to ensure safe machinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, the
output could be held either on or off. For output signals that may lead to
serious accidents, external circuits and mechanisms should be designed to
ensure safe machinery operation in such a case
DESIGN
PRECAUTIONS
Make sure to observe the following precautions in order to prevent any damage to
the machinery or accidents due to abnormal data written to the PLC under the
influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the main
circuit, high-voltage line, or load line.
Otherwise, noise disturbance and/or surge induction are likely to take place.
As a guideline, lay the control line at least 100mm (3.94") or more away from
the main circuit, high-voltage line, or load line.
2) Ground the shield wire or shield of the shielded cable at one point on the PLC.
However, do not ground them at the same point as the high-voltage lines.
Install module so that excessive force will not be applied to the connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not touch any terminal while the PLC's power is on.
Doing so may cause electric shock or malfunctions.
Before cleaning or retightening terminals, externally cut off all phases of the power
supply. Failure to do so may cause electric shock.
Before modifying or disrupting the program in operation or running the PLC,
carefully read through this manual and the associated manuals and ensure the
safety of the operation.
An operation error may damage the machinery or cause accidents.
STARTUP AND
MAINTENANCE
PRECAUTIONS
Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric representative.
Do not drop the product or expose the product to strong impacts, as doing so may
cause product damage.
Turn off the power to the PLC before connecting or disconnecting any extension
cable.Failure to do so may cause equipment failures or malfunctions.
PLC
Other
equipment
PLC
Other
equipment
PLC
Other
equipment
Shared grounding
Good condition
Common grounding
Not allowed
Independent grounding
Best condition
4.1 Applicable PLC
*1 An FX
2NC
-CNV-IF or FX
3UC
-1PS-5V is necessary to connect to the 32DP with
the FX
3GC
/FX
3UC
Series PLC.
However, the 32DP cannot be connected to the FX
3UC
-32MT-LT(-2).
*2 An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect to the 32DP with
the FX5U/FX5UC PLC.
4.2 General Specifications
For the general specification, refer to the PLC main unit manual.
The items other than the following are equivalent to those of the PLC main unit.
However, do not perform any dielectric withstand voltage tests or insulation resistance
tests on this product.
Refer to FX
3G
Series User's Manual - Hardware Edition
Refer to FX
3GC
Series User's Manual - Hardware Edition
Refer to FX
3U
Series User's Manual - Hardware Edition
Refer to FX
3UC
Series User's Manual - Hardware Edition
Refer to MELSEC iQ-F FX5U User's Manual (Hardware)
Refer to MELSEC iQ-F FX5UC User's Manual (Hardware)
4.3 Power Supply Specifications
4.4 Performance Specifications
DISPOSAL
PRECAUTIONS
Please contact a certified electronic waste disposal company for the
environmentally safe recycling and disposal process for your device.
TRANSPORTATION AND
STORAGE PRECAUTIONS
The product is a precision instrument. During transportation, avoid impacts larger
than those specified in the general specifications by using dedicated packaging
boxes and shock-absorbing palettes. Failure to do so may cause failures in the
product. After transportation, verify operation of the product and check for damage
of the mounting part, etc.
Model name
Applicability
FX
3G
Series PLC
Ver. 1.00 or later
FX
3GC
Series PLC
*1
Ver. 1.40 or later
FX
3U
Series PLC
Ver. 2.21 or later
FX
3UC
Series PLC
*1
Ver. 2.21 or later
FX5U PLC
*2
From first production
FX5UC PLC
*2
From first production
Item
Specifications
Withstand
voltage
500V AC for 1 min
Between communication
connector frame and ground
terminal of PLC main unit
Insulation
resistance
5 M
or higher by 500 V DC
insulation resistance tester
Item
Specifications
Internal Power
Supply
145 mA at 24V DC is supplied from the internal service power in
the main unit via extension cable
Item
Specifications
Transmission Type
Bus network
Unit Type
PROFIBUS-DP Slave
Transmission Data (Maximum
Exchanged Data Length)
• Cyclic Data : 144 Byte
• Acyclic Data : 140 Byte
Maximum Number of
FX
3U
-32DP at one PLC
8 units
Supported
Transmission
speed (bps)
and Bus
Length
9.6k, 19.2k, 45.45k,
93.75k
1,200 m (3,937') / segment
See Section 4.5
187.5k
1,000 m (3,281') / segment
500k
400 m (1,312') / segment
1.5 M
200 m (656') / segment
3M, 6M, 12M
100 m (328') / segment
PROFIBUS Module ID
“F332” hex
Connector
PROFIBUS-DP
Network
PROFIBUS-DP network (9 pin D-SUB)
Global Control
Supports SYNC, UNSYNC, FREEZE, and
UNFREEZE modes
Terminal Resistor
Not built in.
4.5 Maximum Bus Length and Baud Rate
The following table shows the acceptable bus length.
Maximum Bus Length = (No. of rep 1) * (Bus Length / segment)
「电器电子产品有害物质限制使用标识要求」的表示方式
Note: This symbol mark is for China only.
含有有害6物质的名称，含有量，含有部品
本产品中所含有的有害 6 物质的名称，含有量，含有部品如下表
所示。
产品中有害物质的名称及含量
本表格依据SJ/T 11364的规定编制。
○:表示该有害物质在该部件所有均质材料中的含量均在GB/T
26572规定的限量要求以下。
×:表示该有害物质至少在该部件的某一均质材料中的含量超出GB/T
26572规定的限量要求。
基于中国标准法的参考规格:GB/T15969.2
Baud Rate
(bps)
Maximum Bus Length
No repeater
1 repeater
2 repeaters
3 repeaters
9.6k, 19.2k,
45.45k,
93.75k
1,200 m
(3,937')
2,400 m
(7,874')
3,600 m
(11,811')
4,800 m
(15,748')
187.5k
1,000 m
(3,281')
2,000 m
(6,562')
3,000
(9,843')
4,000 m
(13,123')
500k
400 m
(1,312')
800 m
(2,625')
1,200 m
(3,937')
1,600 m
(5,249')
1.5 M
200 m (656')
400 m (1,312') 600 m (1,969') 800 m (2,625')
3M, 6M,
12M
100 m (328')
200 m (656')
300 m (984')
400 m (1,312')
部件名称
有害物质
铅
(Pb)
汞
(Hg)
镉
(Cd)
六价铬
(Cr(VI))
多溴联苯
(PBB)
多溴
二苯醚
(PBDE)
可编程
控制器
外壳
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印刷基板
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