itsensor E2608-LEL Combustible Gas Detector-Transmitter User Manual

itsensor E2608-LEL Combustible Gas Detector-Transmitter

Product Information

The Combustible Gas Detector-Transmitter E2608-LEL is designed to detect and monitor the presence of various combustible gases. It provides accurate and reliable gas detection for applications such as industrial production, welding, cutting, and chemical synthesis.

Specifications

• Product Name: E2608-LEL
• Chemical Formula: Varies depending on the gas being detected
• Molar Weight: Varies depending on the gas being detected
• Relative Gas Density (to air): Varies depending on the gas being detected
• Conversion: 1 ppm = Varies depending on the gas being detected mg/m3
• Boiling Point: Varies depending on the gas being detected
• Low Explosive Limit (LEL), % vol. in air: Varies depending on the gas being detected
• Upper Explosive Limit (UEL), % vol. in air: Varies depending on the gas being detected
• Odor: Varies depending on the gas being detected

Detected gases| Acetylene, Butane, Hexane, Hydrogen, Methane, Octane, Propane, etc
---|---
Sampling method| Diffusion
Sensor type| Metal oxide semiconductor| Catalytic (pellistor)
Typical detection range| 0…100% LEL| 0…100% LEL
Resolution / digital unit| 0.1% LEL| 1% LEL
Response time T90| ca. 60 s| ≤10 s
Sensor lifetime| > 5 years| > 3 years
Calibration interval| 12 months| 6 months
Operating conditions| -40…+70 °C| -10…+50°C
<95% RH non-condensing, 0,9…1,1 atm explosion safe indoor areas, Normal ambient oxygen level Avoid strong mechanical shock, vibrations, or EMI Avoid exposure to corrosive gases or silicone-containing products
NOTE! Transmitter with a catalytic type sensor is not suitable for acetylene detection
Signal update| Every 1 second
Power supply options| 12…36 VDC (default), 24 VAC or 230 VAC as options
Power consumption| < 2 VA
Load resistance| RL < (Us – 2 V) / 22 mA for 4-20 mA
RL > 250 kOhm for 0-10 V mode
Digital interface| RS485, Modbus RTU protocol No galvanic isolation
Analog outputs| 2 × 4-20 mA / 0-10 V, user settable
Outputs assignment| OUT1: Gas; OUT2: Gas
Output scale width| > 10 × resolution Recommended: 20-100% of the detection range
Relay outputs| 2 × SPST, max 5 A, 30 VDC / 250 VAC
Default alarm setpoints| RE1 (LOW): set 20% LEL; release 16% LEL RE2 (HIGH): set 50% LEL; release 40% LEL
Cable connections| Screwless spring-loaded terminals
Enclosure| Grey ABS, wall mount, protection class IP65
Dimensions| H87 × W82 × D55 mm
---|---
CE marking| According to 2014/30/EU and 2014/35/EU, EN 50491-4-1:2012 EN 61000-6-3:2020, EN 61326-1:2013(EMC, emissions) EN 61000-6-1:2019, EN 61000-6-2:2019(EMC, Immunity)
EN 60079-29-1:2016, EN 60079-29-2:2015 and EN 60079-29-3:2014
Other options
**** Remote probe| Protection IP65, default cable length 3.0 m; max height 80 mm, max diameter 65 mm

Hazards

The detected gases may have hazardous properties, including flammability, explosiveness, and toxicity. It is important to handle and use the product with caution to ensure safety.

Exposure Limits

The product has specified exposure limits to ensure safe operation. These limits are determined by relevant authorities such as NIOSH (National Institute for Occupational Safety and Health).

Product Usage Instructions

Installation

Before installation, carefully read the installation guidelines provided in the user manual. The E2608-LEL is available in wall mount and duct mount versions. Follow the specified mounting dimensions for proper installation. Ensure correct handling of the sensor probe and follow the gas sensor replacement procedures when necessary.

Electrical Connections

Proper electrical connections are crucial for the operation of the E2608-LEL. Follow the instructions provided to ensure correct and safe cabling for 24 VAC operation. Refer to the user manual for detailed information on electrical connections.
Unscrew four lid screws and detach the lid from the device. Use the M16 cable gland to let in cables of the power supply and of the external devices. Attach the power cable to the device without turning it on. Using the connection diagram below, connect the analog outputs and digital interface terminals to the relevant devices according to your tasks.

Version without PSU

Version with PSU

J u m p e r s

J1| OUT1 type (open: 4-20 mA; closed 0-10 V)
J2| OUT2 type (open: 4-20 mA; closed 0-10 V)
X6| Reset Modbus network parameters to default
X4 terminals
OUT1| 4-20 mA / 0-10 V output
OUT2| 4-20 mA / 0-10 V output
0V| 0 V / 24 VAC Neutral (optional)
A| RS485 A / Data +
B| RS485 B / Data –
+U| +24 VDC / 24 VAC Phase (optional)
X5 terminals (optional)

L| 90…265 VAC Phase
N| 90…265 VAC Neutral
RE1 NO| Relay 1, normally open terminal
RE1 COM| Relay 1, common terminal
RE2 NO| Relay 2, normally open terminal
RE2 COM| Relay 2, common terminal

The screw less quick connect spring terminals on the E2608 series devices are suitable for a wide range of wires with a cross-section of 0.2…1.5 mm2. We recommend to strip the wire end by 8…9 mm and use wire end sleeves.
To connect the wire, insert the wire end into the terminal hole. To disconnect, push the spring-loaded terminal lever, pull the wire out, and release the lever. Use a twisted-pair cable, e.g. LiYY TP 2×2×0.5 mm2 or CAT 5, to connect the device to the RS485 network. A and B on the device represent DATA+ and DATA- respectively, polarity must be respected when connecting to an external RS485 network. Both analog outputs can be independently changed between 4-20 mA and 0-10 V type using jumpers J1 (OUT1) and J2 (OUT2). By closing pins on a specific jumper the related output is 0-10 V, with an open jumper the output is 4-20 mA. Power restart is required after changing the position of the jumpers.
NOTE: The outputs are not galvanically isolated from the external power supply and share a common 0V. Allowed load resistance limits are stated in the Specifications table. To power the instrument from an external power source, connect terminals 0V and +U to the source. If the integrated mains power supply module is used, connect terminals L and N to the mains.

• Actuator short-circuits should be avoided, to protect the instrument relays using external fuses or safety switches.

Maintenance
Regular maintenance is required to ensure the proper functioning of the E2608-LEL. Follow the recommended maintenance procedures provided in the user manual. This may include calibration and sensor replacement.
Do not perform any maintenance operation with the power on. Clean the device with a soft damp cloth. Do not use any abrasive cleaning agents. Do not immerse the device in water or any cleaning media.

Calibration
Calibration is an important aspect of maintaining accurate gas detection. Follow the calibration procedures outlined in the user manual to calibrate the E2608-LEL. Calibration should be performed at regular intervals or as recommended by the manufacturer. E2608-LEL detectors have been calibrated by Manufacturer with standard gas mixtures before delivery. Provided that the sensor is used under moderate conditions, field recalibration is recommended once or twice a year. Please contact your dealer for more information.

Product Configuration

The E2608-LEL offers various configuration options to suit different applications. Refer to the user manual for instructions on configuring the product according to your specific requirements. A standard configuration kit includes a USB-RS485 converter, fixed flow regulator, gas tubing with applicators, and a software pack. Please contact your Seller for more information. Gas detector-transmitters E2608 share all functionalities of the PluraSens® multifunctional detector-transmitter platform. The features and options include:

• Digital output change rate-limiting filter
• Digital integrating (averaging) filter
• Free assignment of each analog output to the chosen parameter
• Flexible setting of analog output scales for each output
• Output zero and slope adjustment for calibration
• Free assignment of each of two relays to the chosen parameter
• Several relay control logic modes
•  Switch delays and minimum on/off state durations for each relay

The output scales can be changed by Modbus commands by using the configuration software and the standard configuration kit (see Modbus RTU Communication).

Return to Default Settings

If needed, the product can be reset to its default settings. Follow the instructions provided in the user manual to return the E2608-LEL to its default configuration.
To reset the device’s Slave ID, baud rate, and stop bit numbers to factory settings, proceed as follows:

1. De-energize the device
2. Connect the X6 jumper
3. Turn on the device
4.  De-energize the device
5. Disconnect the X6 jumper
6.  Turn on the device

NOTE: Cables should be connected / disconnected from PCB when the power supply is unplugged. Connecting or Disconnecting Live wires can result in Corrupt Firmware.

Modbus RTU Communication

The E2608-LEL supports Modbus RTU communication. Refer to the user manual for instructions on setting up and utilizing the RS485 communication interface and configuring the communication parameters.

RS485 communication interface

Communication parameters

02 – Illegal data address
03 – Illegal data value
04 – Slave device failure
(details of last error 04 can be read from register 0x0008)

Warranty
The product comes with a warranty. Refer to the user manual for warranty information and terms. This product is warranted to be free from defects in material and workmanship for a period of one year from the date of the original sale. During this warranty period, the Manufacturer will, at its option, either repair or replace a product that proves to be defective. This warranty is void if the product has been operated in conditions outside ranges specified by the Manufacturer or damaged by customer error or negligence or if there has been an unauthorized modification.

Acetylene

A colorless flammable gas, lighter than air. Mixtures with air are explosive. It results from the interaction of calcium carbide with water. In industrial production, acetylene is mainly manufactured by the pyrolysis of light hydrocarbons.
Acetylene is widely used for welding and cutting of metals. The usage of acetylene as a feedstock in the chemical industry declines due to cost and environmental considerations.

Synonyms/Trade Names: Ethine, Ethyne.

may have a garlic-like smell due to impurities.
Hazards| Highly flammable. Gas/air mixtures are explosive. Forms explosive acetylide compounds with copper, mercury, silver & brasses (containing more than 66% copper). Asphyxiant. Non-toxic, but, when generated from calcium carbide, it can contain toxic impurities such as traces of phosphine and arsine.
Exposure limits (NIOSH)| REL C| 2662 mg/m3 /2500 ppm

Butane

A colorless flammable gas that is heavier than air. The term “butane” is used for any of two structural isomers (n-butane or iso-butane, with unbranched and branched-chain respectively) or for their mixture. Occurs in light petroleum fractions. Butane is used mainly as a fuel and as a feedstock in organic synthesis. It is applied also as a propellant in aerosol sprays and may be used as an ozone-friendly refrigerant. Mixtures of butane with propane and other hydrocarbons are referred to as LPG (liquefied petroleum gas).

narcosis, asphyxia, cardiac arrhythmia, fluctuations in blood pressure, and temporary memory loss, when abused directly from a highly pressurized container, and can result in death from asphyxiation and ventricular fibrillation.
Exposure    limits (NIOSH)| TWA| 1900 mg/m3 /800 ppm| Not established

Hexane

A colorless flammable gas that is heavier than air. Hexane is a constituent component of gasoline. It is widely used in solvents as it is cheap, relatively safe and largely unreactive. It is also used as an industrial cleaner and degreaser and is an ingredient in many consumer products.

respiratory tract, cough, mild depression, cardiac arrhythmias.
Exposure limits| TWA| 1800 mg/m3 /500 ppm

Hydrogen

A colorless, odorless, flammable gas that is much lighter than air. Mixtures with air are explosive. Results from the interaction of acids, bases, and water with active metals and from the electrolysis of aqueous solutions. In industrial production, the main source of hydrogen is hydrocarbons.

Methane

A colorless flammable gas, the main component of natural gas, marsh gases. Methane results from bacterial decomposition of plant and animal matter (landfill gas). Methane is widely used as a fuel and chemical feedstock.

Synonyms: Marsh Gas, Natural Gas, Carbon tetrahydride, Hydrogen carbide.

Octane

A colorless flammable gas that is heavier than air. Octane is a component of gasoline (petrol).

respiratory tract, depression, and pulmonary edema.
Exposure    limits (NIOSH)| TWA| 350 mg/m3 /75 ppm

Propane

A colorless flammable gas that is heavier than air. It occurs in light petroleum fractions. Propane is used mainly as a fuel and as a feedstock in organic synthesis. It is applied also as a propellant in aerosol sprays and may be used as an ozone-friendly refrigerant. Mixtures of propane with butane and other hydrocarbons are referred to as LPG (liquefied petroleum gas).

contain odorant (“gas smell”).
Hazards| Highly flammable, mixtures with air are explosive. Asphyxiant. May cause dizziness, confusion, excitation when inhaled.
Exposure limits (NIOSH)| TWA| 1800 mg/m3 /1000 ppm
IDLH| 2100 ppm [10%LEL]

Conversion of ppm to mg/m3 is calculated for 25°C and 1 atm.

• according to new EU standards (‘stirred’ concentration of gas)
• according to US standard (‘still gas’ method)

Product description
E2608 series detectors-transmitters belong to the PluraSens® family of multifunctional measurement instruments. The instruments utilize gas sensors of various types with excellent repeatability, stability, and long lifetime. E2608 series provides two independent analog outputs OUT1 and OUT2, user- selectable to 4-20 mA or 0-10 V. RS485 Modbus RTU digital communication interface allows easy instrument configuration and integration into various automation systems. Two relays RE1 and RE2 with closing dry contacts can be used to switch alarm sirens, ventilation fans, shut-off valves, or other actuators. Remote probe, duct mount version and 24 VAC or 230 VAC power supply options are available.
The version of your detector-transmitter is marked on the package. If the symbol ⚠ is marked on the equipment, consult the documentation for further information.

Safety requirements
Misuse will impair the protection of the product. Always adhere to the safety provisions applicable in the country of use. Do not perform any maintenance operation with the power on. Do not let water or foreign objects inside the device. Removal of the PCB from the enclosure voids the warranty. Do not touch the electronic components directly, as they are sensitive to static electricity. Connection diagrams can be found in the electrical connections section. The device might not perform correctly or be damaged if the wrong power supply is connected. External circuits connected to the equipment should have sufficient insulation rating according to the environmental conditions and equipment power. A disconnecting device that is marked as such and easily accessible should be included in the installation of this product.

Operating conditions
The device should be used both in a non-hazardous area and in a basic electromagnetic environment, where the latter is defined in EN 61326-1. Avoid strong mechanical shock and vibrations. Avoid corrosive atmosphere and areas highly contaminated with dust, oil mist, etc. Keep the instrument away from direct sunlight. A sudden temperature or humidity change might affect the sensitivity of the sensor.

Installation guidelines

Before proceeding with the installation it is mandatory to read the Safety requirements section and make sure to comply with all listed instructions. Installation standards EN 60079-29-2 and EN 45544-4 are also recommended for further instructions and related information about the installation. During the installation of the detector-transmitter the following points must be considered:

• Application (air quality control or leakage detection)
• Properties of the space under investigation (room geometry, direction, and velocity of airflows, etc.),
• For gases lighter than air, install the sensor higher than the potential leakage/generation source or near the ceiling. Combustible gases lighter than air are hydrogen, methane, and acetylene. Propane, hexane, octane and butane are heavier than air and tend to sink. It is recommended to place the sensor lower than potential leakage or generation source.
• The device should be accessible for maintenance and repair.

The aforementioned conditions above will affect the coverage area of the device. however, the coverage area for a detector-transmitter is usually between 2.5 to 5 meters radius. For early leakage detection install the sensor as close as possible to the potential leakage sources (flanges, valves, pressure reducers, pumps, etc.), taking into consideration other points listed above. For general area monitoring without definite leakage sources, the detector-transmitters should be distributed evenly in the room. For personal safety control, the detector-transmitters are installed in the breathing zone (at the height of the head of people or animals). The recommended sensor position is vertical, pointing downwards.

Wall mount version
Attach the mounting lugs to the back of the detector-transmitter using the provided screws. Screw the device to the wall through the mounting lug holes (for dimensions see the drawing in the next section).

Duct mount version
Cut a hole with a diameter of 36…45 mm in the air duct at the chosen mounting place. Place the rubber flange aligning the holes in the flange and the air-duct and fix the flange with four self-tapping screws. Pass the sensor probe through the flange and adjust it to the appropriate depth. Unscrew four lid screws and detach the lid from the detector-transmitter.

Mounting dimensions

Duct mount version

Sensor probe handling

The wall-mount version of the detector-transmitter is available with a remote probe (see drawing below for dimensions). The remote probe is connected to the main unit with a shielded cable. The default remote probe cable length is 3 m.

Wall mount remote probe with fixing clamp (default version),

Remote probe with rubber flange and three self-tapping screws (on request)
The sensor probes of all types are equipped with a hydrophobic microporous PTFE filter to protect the sensor from dust, dirt, and water drops. The filter should be replaced if it gets strongly contaminated. To replace the PTFE filter, unscrew the sensor head cap and remove the old filter. Place a new filter into the cap and tighten it again.
NOTE: Never stab or press the filter near its center where the sensor is located since this may damage the sensor. Do not remove the filter as it may cause the device to show incorrect values and/or break the sensor.
The recommended orientation of the sensor probe is vertical with the sensor tip pointing downwards. This prevents the possible accumulation of condensed water on the sensor protection filter.

Gas sensor replacement procedures

1. Remove the sensor head cap from the device (or the remote probe),
2. Remove the PTFE filter (if it is not removed within the cap),
3. Remove the O-ring rubber,
4. Detach the pellistor (catalytic) sensor from the device,
5. Insert the new pellistor (catalytic) sensor inside,
6. Put back the O-ring rubber, PTFE filter, and the head cap, respectively.

NOTE: Metal oxide semiconductor sensors are not replaceable!

Correct and incorrect cabling for 24 VAC

Operation

Turn on the power. The instrument warm-up time for both types of sensors takes about 5 minutes after switching on and final sensor stabilization time to maximum accuracy takes about 1 hour.The operating status is indicated by the LED on the PCB of the device. The control LED (red) response to different processes is presented in the following table:

on, 50% off)
Relay 1 turned on| Blinking 1 Hz (50% on, 50% off)
Relay 2 turned on| Blinking 2 Hz (50% on, 50% off)
During the Modbus communication cycle| Short on-off pulses
Normal operating/measurement| Continuously on or off

Make sure that the detector-transmitter is properly mounted, the external devices connected, power LED (green) on, and the control LED (red) is constantly lit. Place the lid back and fix it with the screws. The device is ready to use.

Delivery set

• Detector-transmitter E2608 (wall mount or duct mount version)
•  Mounting accessories:
  • 4 cross-shaped mounting lug with screws and 4 screws with plastic dowels for wall mount version
  • Square Rubber flange for Duct mount option
  • Round rubber flange for Remote probe option
  • Fixing clamp for Remote probe option

Order code for E2608-LEL options

Modbus holding registers
Register addresses are shown 0-based, Address in hexadecimal, Reg in decimal format. Modbus holding register numbers MHR are shown in the decimal 1-based format and may be addressed either from 00001 or 40001 base.

Address| Reg / MHR| RW| Description| Supported values (dec)| Default
---|---|---|---|---|---
0x0001| 1 / 40002| R| Hardware version| | –
0x0002| 2 / 40003| R| Software version| | –
0x0003| 3 / 40004| R| Product serial number| 1…65535| –
0x0004| 4 / 40005| RW| Slave ID (net address) *| 1…247 | 1
0x0005| 5 / 40006| RW| Baud rate | 1200, 2400, 4800, 9600, 19200, 38400, 57600| 9600
---|---|---|---|---|---
0x0006| 6 / 40007| RW| Response delay, ms| 1…255| 10
0x0007| 7 / 40008| RW| Stop bits, parity bit | 1 – No parity bit, 1 stop bit (default after factory reset)
2 – No parity bit, 2 stop bits
3 – Odd parity, 1 stop bit
4 – Even parity, 1 stop bit NOTE** : 3 and 4 are available starting from the Software version 0x218 (dec. 536)|

1

0x0008| 8 / 40009| R| Last error code| 1…255| –

0x0011

|

17 / 40018

|

RW

| Technological: age of last data in seconds (read) / restart (write)| 0…65535 s (read),

writing 42330 restarts the instrument

|

–

0x00A5| 165 / 40166| RW| Zero adjustment for gas data, ADC| -32000…+32000 ADC units| 0
---|---|---|---|---|---
0x00A6| 166 / 40167| RW| Slope adjustment for gas data| 1…65535| 512
0x00A7| 167 / 40168| RW| Change rate limit for gas data, units / s| 1…32000, 0 – no limit| 0
0x00A8| 168 / 40169| RW| Integrating filter time constant, s| 1…32000 (seconds), 0 – no filter| 0
0x00C9| 201 / 40202| RW| Parameter tied to analog output 1| 0 – None
2 – Gas concentration
9 – Forced Modbus control, value set in MHR / 40204| 2
0x00CA| 202 / 40203| RW| Parameter tied to analog output 2| 0 – None
2 – Gas concentration
9 – Forced Modbus control, value set in MHR / 40205| 2
0x00CB| 203 / 40204| RW| Forced value for analog output 1| 0…1000
(0.0%.. 100.0% of output scale)| 0
0x00CC| 204 / 40205| RW| Forced value for analog output 2| 0…1000 (0.0%.. 100.0% of output scale)| 0
0x00D3| 211 / 40212| RW| Parameter tied to relay| 0 –none| 2
| | | RE1| 2 – gas concentration
9 – control by Modbus control, state set in MHR / 40214|
---|---|---|---|---|---
0x00D4| 212 / 40213| RW| Parameter tied to relay RE2| 0 – none
2 – gas concentration
9- – control by Modbus control, state set in MHR / 40215| 2
0x00D5| 213 / 40214| RW| Forced state for relay RE1| 0 –off, 1 – on| 0
0x00D6| 214/ 40215| RW| Forced state for relay RE2| 0 – off, 1 – on|

0

0x00D7| 215 / 40216| RW| Switching delay for relay RE1| 0…1000 (s)| 0
0x00D8| 216 / 40217| RW| Switching delay for relay RE2| 0…1000 (s)| 0
0x00D9| 217 / 40218| RW| Minimal on/off time for relay RE1| 0…1000 (s)| 0
0x00DA| 218 / 40219| RW| Minimal on/off time for relay RE2| 0…1000 (s)| 0
| | | | |
---|---|---|---|---|---
0x00DB| 219 / 40220| RW| Control logic for relay RE1| 0 – none
1 – relay on at high values
2 – relay on at low values| 0
| | | | 3 – relay on at values within|
| | | | the range|
| | | | 4 – relay on for the values out|
| | | | of the range|
0x00DC| 220 / 40221| RW| Control logic for relay RE2| 0 – none
1 – relay on at high values
2 – relay on at low values| 0
| | | | 3 – relay on at values within|
| | | | the range|
| | | | 4 – relay on for the values out|
| | | | of the range|
0x00DD| 221 / 40222| RW| LOW setpoint for relay RE1| 0…65535 (gas units)| see Specifications
---|---|---|---|---|---
0x00DE| 222 / 40223| RW| HIGH setpoint for relay RE1| 0…65535 (gas units)| see Specifications
0x00DF| 223 / 40224| RW| LOW setpoint for relay RE2| 0…65535 (gas units)| see Specifications
0x00E0| 224 / 40225| RW| HIGH setpoint for relay RE2| 0…65535 (gas units)| see Specifications
0x00FF| 255 / 40256| RW| Sensor, analog outputs, LED and buzzer status| bit[0]=0/1 – sensor present/absent, RO bit[1]=0/1 – analog outputs deactivated/activated bit[2]=0/1 – in case the sensor is absent, turn signaling off/on analog output1 bit[3]=0/1 – in case the sensor is absent, turn on signaling with low current/high current on analog output1; if bit[2]=0 this bit will be ignored bit[4]=0/1 – in case of sensor absent, turn signaling off/on analog output2 bit[5]=0/1 – in case of sensor absent, turn on signaling with low current/high current on analog output2; if bit[4]==0 this bit will be ignored bit[6]=0/1 – current/voltage output detected on output1, RO bit[7]=0/1 – current/voltage output detected on output2, RO bit[8]=0/1 – LED deactivated/activated bit[9]=0/1 – buzzer deactivated/activated bit[10]=0/1 – LED is on/off in normal condition bit[11]=0/1 – 1 Hz (50% on, 50% off) LED signal off/on if relay1 turned on bit[12]=0/1 – 2 Hz (50% on, 50% off) LED signal off/on if relay2 turned on| user defined
0x0101| 257 / 40258| R| Raw gas sensor data| 0…4095, ADC units|
---|---|---|---|---|---
0x0103| 259 / 40260| R| Gas concentration, gas units| 0…65535, gas units|
0x0105| 261 / 40262| RW| 0% value for analog output 1| -32000…+32000, gas units| User defined
0x0106| 262 / 40263| RW| 100% value for analog output 1| -32000…+32000, gas units| User defined
0x0107| 263 / 40264| RW| 0% value for analog output 2| -32000…+32000, gas units| User defined
0x0108| 264 / 40265| RW| 100% value for analog output 2| -32000…+32000, gas units| User defined

• The new value is applied after restart.
• Broadcast slave ID 0 can be used to assign a new ID to the instrument with an unknown ID. When addressing by ID 0 the device shall be the only Modbus instrument in the network. The device will not respond to the Master command when addressed by ID 0.
• This value is dynamic and not kept in EEPROM after a restart.

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