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LX6V Profinet Coupler

Version 3.1 by Jiahao Lai on 2026/08/13 18:03

Overview

LX6V-EM□-PN communication modules support Profinet communication, equipped with auto scanning function, and adapt to third-party Profinet master station device.

Main features:

  1. Compact structure and convenient installation;
  2. Response at microseconds of high-speed bus;
  3. The maximum number of expansion modules is 32, and the total power of modules≤48W;

Warranty statement

Normally, if the product fails or is damaged, our company provides maintenance service within the warranty period (see the order form for product warranty period details). After the warranty period, repair fees will be charged.

During the warranty period, if the product is damaged due to the following conditions, repair fees will be charged.

  1. Product damage caused by not operate the product according to the regulations in the manual.
  2. Product damage caused by fire, flood, and abnormal voltage.
  3. Product damage caused by abnormal functions.
  4. Product damage caused by exceeding the specified scope of use of the product.
  5. Secondary damage caused by force majeure (natural disaster, earthquake, lightning).

Responsibility statement

The contents of the manual have been carefully checked, but there is no guarantee that it is completely correct. We will regularly check the content of the manual and make corrections in subsequent versions. Valuable opinions are welcome. The contents described in the manual are subject to change without notice.

The relevant service fees shall be calculated according to the unified standards of the manufacturers. If there is a contract, the principle of contract priority shall be used. Please refer to Warranty Card for detailed warranty instructions.

Safety precautions.png

Installation precautions

WARNING

To ensure safety system operation, please configure emergency braking circuit, positive inversion circuit or other protection circuit for PLC, which can prevent the damage to PLC or other devices.

● It is imperative to configure the relevant safety circuits externally to the programmable controller.

● All outputs are turned off, as an error be detected by PLC CPU during self-diagnosis, such as a watch dog timer error. When error that cannot be detected, internal protection circuit may be disabled.

When relay and transistor are damaged, the output state of transistor in the PLC can’t be controlled. To ensure safe operation of the machine, please design external protection circuits and mechanisms for key output signals.

Start-up and maintenance precautions

DANGER

● Do not touch the terminal when power-on, otherwise it may cause electric shock and misoperation.

● Please remove and clean the terminal after the power is off. Otherwise, it may cause electric shock when power-on.

● Please read the manual carefully and confirm the safety before performing program changes, forced output, RUN, STOP and other operations during machine running.

● Mistakes in operation will damage the machine and cause accidents.

WARNING

● Please do not decompose and transform, otherwise it will cause failure, malfunction and fire.

※ For maintenance matters, please contact FUJIAN FUCAN Wecon Electronic Technology Co., Ltd.

● Please load and unload the extension cable and other connecting cable after the power is turned off, otherwise it will cause failure and malfunction.

Maintenance and repair

Periodic inspection

  1. Whether the temperature inside the machine has risen abnormally due to other heating elements or direct sunlight.
  2. Whether there is dust or conductive dust intrusion into the machine.
  3. Whether there are loose wiring and terminals and other abnormalities.

Product information

Naming

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✎Note: In this manual, "LX6V-EM□-PN" is a general term for this series of devices, specifically referring to "LX6V-EMB-PN" or "LX6V-EMC-PN".

Module support list

CouplerSupported module typesSupported module modelsCoupler firmware version

LX6V-EMB-PN/

LX6V-EMB-PN

Digital I/O moduleLX6V-0808EXYTV1.0.0.6 and above
LX6V-16EX
LX6V-16EYT
LX6V-16EYP
LX6V-1616EXYT
LX6V-1616EXYP
LX6V-32EX
LX6V-32EYT
LX6V-16EYP-3A
Analog I/O moduleLX6V-4AD
LX6V-4DA
Temperature moduleLX6V-4PT
LX6V-4TC

Installation size

Appearance and size

PN Size.png

NumberInterfaceFunction Definition

 

①

Signal IndicatorRUN (White)OFFNo power supply
ONPower on
RUN (White)OFFNo module connected
Quick flash*Coupler initialization
Flash*Profinet connecting
Single flash*Module configuration error
ONProfinet connected
ERR (Red)OFFNormal status
Single flash*Module configuration error
ONNo module connected
②USB port (Type-C)Used for firmware upgrade
③Profinet InterfaceP1: Profinet 1
P1: Profinet 2
④24V power Input InterfaceCoupler power input interface
⑤Expansion Module InterfaceConnect LX6V Series expansion module
⑥Mounting Hole2 places, Φ4.5
⑦DIN Rail FastenerSupport

✎Note:

Fast Flashing: ON for 100ms, OFF for 100ms;

Flashing: ON for 200ms, OFF for 200ms;

Single flash: ON for 200ms, OFF for 1s.

  1. The USB interface used to be only for firmware upgrade or debugging of the coupler itself and cannot supply power to expansion modules.If expansion modules are connected to the system, power must be supplied via the 24V power input interface; otherwise, the modules cannot be recognized.
  2. It is strictly prohibited to power the system via USB when expansion modules are connected. 

Installation instructions

Please install the end cover on the right side of the last expansion module, align it with the module interface slot and connect it, as shown in the figure below:

The figure below takes the LX6V-EMC-PN coupler as an example

PN connect module.pngElectrical installation

Communication wiring

Cable recommendation

Profinet communication uses STP/FTP cable for network data transmission, without short circuit, dislocation and bad contact. 

The length of the cable between the devices cannot exceed 100 meters. Exceeding 100 meters will cause signal attenuation and affect normal communication.

It is recommended to use the following specifications of data cables:

ItemSpecifications
Type of cableElastic crossover cable, category 5E (cat 5e) cable and above
Traverse cross sectionAWG26
Traverse typeTwisted pair
Line pairs4 pairs

 Wiring instructions

Refer to the shell mark for wiring, the IN interface is EtherCAT input port, used for connecting the EtherCAT master station; The OUT interface is an EtherCAT output port, used for connecting the later EtherCAT slave station.

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Power terminal wiring

Connect the 24V power supply positive and negative poles according to the shell mar. The cross-sectional area of the grounding wire shall be not less than 2 mm2, and the grounding resistance shall be less than 100 Ω.

1786614967527-826.png

Parameters

Specification parameters

 Specification parameter
ItemLX6V-EMB-PNLX6V-EMC-PN
Maximum expansion module1632
Rated Input VoltageDV 24V±10%, 100mA (excluding expansion module)
Communication InterfaceRJ45×2, 10Mbps (Standard Ethernet), 100Mbps (Profinet)
Communication MethodFull Duplex
PDO dataUp to 1440 byte
PDO dataUp to 1440 byte
Communication ModeRT mode
Synchronous PeriodMinimum 1ms
Allowable Instantaneous Power-off Time10ms
Inrush Current≤ 45A
Power ProtectionReverse connection protection, overcurrent protection, surge absorption
I&M DataI&M0 to I&M3
Profinet versionV2.43
Profinet Switch FunctionSupport
Standard Ethernet ProtocolTCP/IP, SNMP, LLDP
Alarm/Diagnosis/Status Information ReadingSupport
TopologySupports linear, star, and tree topologies.
Transmission DistanceThe distance between two nodes should be ≤100m
Transmission MediumCategory 5E (cat 5e) cable or above
FSU Priority StartSupport
MRPSupport
Port DisablingSupport
Factory ResetSupport
Firmware UpgradeSupport

Environmental specifications

ItemSpecification
Usage environmentNo corrosive, combustible gas, no large amount of conductive dust
Environment temperature

Working temperature: 0℃ to 55℃

Storage temperature: -20℃ to 70℃

Environment humidity

Working humidity: 10 % to 90% RH (no condensation)

Storage humidity: ≤ 90% RH (no condensation)

InstallationSnap mount on DIN46277 (width 35 mm) rail or direct positioning hole mount
Vibration resistanceCompliant with JISC0040 standard
 InstallationFrequencyAccelerationAmplitude

X, Y, Z

10 times in each of three directions

(80 minutes in each direction)

 DIN rail installation10 to 57 Hz--0.035 mm 
  57 to 150 Hz4.9 m/s2-- 
 Direct installation10 to 57 Hz--0.075 mm 
  57 to 150 Hz9.8 m/s2-- 
Shock resistance

Compliant with JISC0041 standard

(147 m/s2, action time 11ms, three sinusoidal half-wave pulses in each of X, Y, and Z directions)

EMC immunity levelZone B (per IEC 61131-2)
Altitude requirements≤ 2000m (80 kPa)
Protection levelIP20
GroundingNot co-located with the strong current system

Usage instructions

This module is compatible with Siemens S7-200 smart, S7-1200, S7-1500 PLC (Need PLC firmware support Profinet protocol). The following is an introduction to the usage methods of Siemens PLC.

Download Link

Coupler general error code

Error typeError codeError descriptionAffected moduleSolution
General module error0x1000Failed to scan the moduleCoupler
  1. Check module power supply
  2. Check Profinet wiring
  3. Scan the network again
General module error0x1001Configured module count exceeds scanned modulesCoupler
  1. Check the connected module count
  2. Update configured modules
General module error0x1002Configured module count is less than scanned modulesExpansion module
  1. Check the connected module count
  2. Update configured modules
General module error0x1003Configured module type different with scanned modulesExpansion module
  1. Check module type
  2. Update configured modules
General module error0x2200Module offlineExpansion module
  1. Check module power supply
  2. Check module connecting
  3. Restart module
Analog module error0x2001Data is not calibrated4AD/DA
  1. Check module calibration program
  2. Check calibration parameters
Analog module error0x2002Data is out of valid range4AD/DA
  1. Check sensor measuring range
  2. Check whether interference exists
  3. Check input/output range settings
Temperature module error0x23FFSensor not supported4TC
  1. Replace with a supported sensor
Temperature module error0x2310Configuration error: Over-limit setting exceeds the valid range4TC
  1. Check upper limit and lower limit setting
  2. Ensure the limit settings are within the measuring range
Temperature module error0x2311Configuration error: The upper limit of over-limit setting is less than lower limit4TC
  1. Adjust upper limit and lower limit
  2. Ensure upper limit > lower limit
Temperature module error0x2312Configuration error: temperature offset setting exceeds the valid range4TC
  1. Check temperature offset settings
  2. Ensure the temperature offset setting are within the measuring range
Temperature module error0x2313Configuration error: NTC B value exceeds the valid range4TC
  1. Check sensor B value settings
  2. Adjust B value within valid range
Temperature module error0x2340Running status abnormal: Channel disconnected4TC
  1. Check sensor wiring
  2. Check sensor impedance
  3. Change sensor
Temperature module error0x2341Running status abnormal: Channel overflow4TC
  1. Check whether input signal over measuring range
  2. Check whether sensor broken
Temperature module error0x2342Running status abnormal: Channel over limit4TC
  1. Check whether input signal over limit settings
  2. Adjust over-limit settings
Temperature module error0x24FFSensor not supported4PT
  1. Replace with a supported sensor
Temperature module error0x2410Configuration error: Over-limit setting exceeds the valid range4PT
  1. Check upper limit and lower limit setting
  2. Ensure the limit settings are within the measuring range
Temperature module error0x2411Configuration error: The upper limit of over-limit setting is less than lower limit4PT
  1. Adjust upper limit and lower limit
  2. Ensure upper limit > lower limit
Temperature module error0x2412Configuration error: temperature offset setting exceeds the valid range4PT
  1. Check temperature offset settings
    2) Ensure the temperature offset setting are within the measuring range
Temperature module error0x2413Configuration error: NTC B value exceeds the valid range4PT
  1. Check sensor B value settings
    2) Adjust B value within valid range
Temperature module error0x2440Running status abnormal: Channel disconnected4PT
  1. Check sensor wiring
  2. Check sensor impedance
  3. Change sensor
Temperature module error0x2441Running status abnormal: Channel overflow4PT
  1. Check whether input signal over measuring range
  2. Check whether sensor broken
Temperature module error0x2442Running status abnormal: Channel over limit4PT
  1. Check whether input signal over limit settings
  2. Adjust over-limit settings