Production of a universal cable for programming LPG controllers. Manufacturing a universal cable for programming LPG controllers Pinout of the omvl cable

Very often, car owners with installed gas equipment are faced with the need to review/adjust some parameters of the gas “brains”. For this purpose, you need to have a special tester (which is very expensive and not economically feasible for private use) or you need a diagnostic tool in the form of a laptop with installed software and a cord to connect the gas “brains” and the laptop. Branded cords that are commercially available are not cheap, so you can try to make a cable for HBO yourself. How to do this and where to get the components of the future cord for HBO will be discussed in our article.

Cable assembly

Let's look at making a DIY HBO diagnostic cable to connect a laptop to gas “brains” using the example of an HBO cord for one of the popular models of brains from the Polish company Stag.

Components

Actually, the diagnostic cable for HBO itself consists of:

Connector for connecting to the gas brain block (in our case it is standard) 4-pin waterproof automotive connector which can be bought in a car/radio store or ordered from Aliexpress, as we did. The price of one connector was about 60 cents.

Next we need another connector USB type And for subsequent connection of the finished cable for HBO to the laptop. This connector can also be bought at a radio store or ordered from Aliexpress. This connector cost us $1.10.

You will also need a 3- or 4-core copper cable 3-3.5 meters long. It is advisable to use multi-core wire (so that each cable core is wound from several) - this will greatly extend the service life of the finished cable in the future, due to the fact that the cores will break much less.

It is also better to buy heat shrink (for cable insulation) at a radio store.

The “heart” of our cable for matching the laptop and “brains” signals will be the PL2303 chip. It is best to buy not a “bare” microcircuit, but a ready-made USB to TTL module (it will contain the necessary microcircuit with the necessary additional elements sealed) in the same radio store or order from Aliexpress. Our module came with a USB connector, it is best to choose this option, it is easier to assemble, and in the future such a cable for HBO will look much more aesthetically pleasing.

Assembling the cable

Having prepared all the components, it remains to assemble them into a single whole. This should be done according to the diagram given below.

In our case, everything turns out much simpler. The Chinese manufacturer indicated in the documentation for the module a description of the connector and the corresponding wire color:

• black cable - GND;
• green - TXD;
• white - RXD;
• red - VCC.

Therefore, we all came down to crimping and soldering the wires to the 4-pin connector. We used 3 wires:

When your car drives poorly and constantly torments you with something, then you don’t get any pleasure from driving. By the time you get to work, you’re tired; when you leave work, tired, you arrive like a squeezed lemon. And if the “CHECK” lamp is also on, then the mood drops below the baseboard.

If the engine error light comes on correctly or it’s just driving poorly, you need to head to the service station. As time and experience show, there are fewer and fewer professionals at service stations. Of course, there are still grandfathered mechanics who can determine by ear the degree of compression of the block head, but what will they do with the smart electronics of modern cars? That's right, you need to go for computer diagnostics. And you will be very lucky if you come across an intelligent diagnostician with knowledge of the structure of an internal combustion engine.

One day I got a Lanos car for a couple of weeks with LPG (gas cylinder equipment) installed. The car is not new, 2002, but it drives briskly on gasoline. On gas there is constant jerking and sluggish acceleration. In general, by the time you get to work across half of Kyiv, you will spend a lot of nerves. But when you drive slowly in the suburbs, it’s babble. The big city doesn’t like sluggish driving, so I decided to drop in to see the “professionals”. The engine mechanics said there were problems with the gas system, and the gas technicians said that you should set it up on gasoline first. In general, it turned out to be a vicious circle.

I decided to figure it out myself. After googling and reading the forums, I checked all the sensors - they are working. How to check the correct operation of the HBO is a question. And the answer is this: you need a cable and a program in your laptop. Gas brains Tamona Tgstream-PM, here’s a box:

Buying a branded cord is a toad, I didn’t want to buy a non-branded one either. What if it doesn’t work, you have to wait and it’s also worth the money. Having googled the same thing, I found out what can be done from a data cable from an old mobile phone. Interestingly, the cable from the mobile phone fits to the HBO controller. As it turned out, the HBO controller communicates with a PC via the UART protocol (in common parlance rx-tx. Where can I get a data cable from my mobile phone? About 10 years ago it was somewhere, but now? Literally at the next search engine link they suggest making a cable from a Chinese whistle TTL to USB. Unfortunately, I don’t have this, I use a USB ISP.

As it turned out, there are no radio amateurs among car enthusiasts, which is why I wrote this article. Everyone cuts cables from mobile phones and orders “specialized” adapters. BUT! All modern radio amateurs know about the existence of the Arduino platform. In particular, Arduino UNO is programmed and communicates with a PC simply via a bare USB cord, and precisely via the UART protocol. Any Arduino that is sewn without a programmer, on the board of which the CH340T chip is soldered, will do.

We collect our cord on the knee. A minute of working with a soldering iron, we need to short-circuit the reset foot to ground, thereby turning off the microcontroller and essentially we get the same TTL to USB. We connect the wires to the rx, tx and gnd pins. We are looking on the Internet for the pinout of the diagnostic connector of your HBO. I have Tamona Tgstream-PM and here is its connector (male connector):

Tamona Tgstream-PM

Of course, I didn’t have such a connector. I took crocodile jumpers, one end “bit” the wires from the Arduino, and the other end the future plug that will be inserted into the connector. The LED acts as a plug. Its two legs act as spring-loaded contacts. I quickly insulate all exposed areas with electrical tape.

We push our board into the case so that it doesn’t short out. Well, that's all, the cable is ready!

We search for and download the necessary software. For HBO Tamona we download, for another HBO you will have to look for it yourself. Download the driver for Arduino on the Chinese CH340T chip, there are good instructions for installing it.

Now connect to the car. In the Tgstream control unit, the programming connector is combined with the control button connector. Let's disconnect it. First of all, we turn on the ignition and look for the positive wire, we found +12V and firmly forget about it, under no circumstances do we push anything into it, otherwise we can even burn a laptop. +12 can be temporarily plugged with a match or a piece of toothpick, just in case. Next, we look for the ground in the connector and connect the arduino ground to it. Then we connect rx and tx in accordance with the found circuit or the scientific method, they can be swapped and everything will be fine. The correct connection is indicated by a signal established connection in the HBO setup program.

Well, that’s actually the entire cable for diagnosing and programming the HBO. Now look up how to set up the gas system on the Internet, I’m not your advisor here. Let me just say that, using tips and recommendations from the Internet, I managed to achieve excellent performance of the car on gas compared to previous installations by crooked craftsmen.

In the end, I spent as much as 0 money and 15 minutes self made for soldering and packaging of wires. The design is not particularly beautiful, but if you need it right now and for free, it will do just fine. Of course, the idea arose in my head to make a normal cable. To do this, you will have to order a TTL to USB whistle and connector from China. According to the Internet, the connector comes from the fuel pump of a VAZ car.

In addition, I would like to say that this cable can also be used to diagnose a car’s ECU if the control unit supports the UART protocol.

The secret is that every manufacturer automotive gas equipment seeks to make a profit by selling additional equipment - special controller programming cable. If you are installing HBO, you probably noticed that the vast majority of installed equipment has two types of diagnostic connectors:

1) AGIS, ALTIS, STAG 150, OMVL – some other types HBO.

2) Zenit, Stag-300, Stag-4, and others (in the photo the connector coming out of the control unit) ( The pinout is shown for the Zenit system, in Stag +12 and Gnd are swapped).

The photo shows 4 wires going into the connector. Two of these wires are (+) and (-), and two wires carry the Rx and Tx signal. The whole difference is in the location of these wires in the diagnostic block, i.e. Each manufacturer, in order to sell a cable of its own making, places the contacts in the diagnostic block differently (for example, when connecting a cable for Stag-300 to Zenith, the cable is damaged because the positive and negative wires in the block are mixed up).

To solve the problem, it is enough to make a universal connector. For example this:

To save yourself the hassle of repairing cable If the connection is incorrect, before connecting using a multimeter, you must check the diagnostic connector pins on the equipment (some systems supply power to the diagnostic connector only when the ignition is on).

Having correctly connected (+) and (-), then we connect the signal wires.

Sometimes there are cases when the diagnostic block has simply rotted or there is no longer a plus or minus on it. In this case, the power wires CABLES They are connected to the battery, and only signal ones are connected to the diagnostic block.

Warning

You should always carefully check the polarity of the power connection to the cable.

Where to get the Lovato-Stag cable terminal from

During production cord for HBO diagnostics, the question arises - “Where can I get the connector?” For HBO cable Lovato-Stag You can use the connector from the fuel pump of domestic cars - GAZ, VAZ. The full name of this connector is AMP series Superseal 1.5 (4-pin).

Where to get the terminal for OMVL and others.

Puzzling over where to find the connector for HBO diagnostic cable OMVL, I came to the conclusion that it is unrealistic to find such a connector... BUT, while doing a small revision of the wires, I came across a wonderful thing. Power connector motherboard from an old 300 watt power supply, an old system unit. and lo and behold! This connector fits with some modifications. Namely: first of all, you need to find a number of pins of the desired shape and then cut off the rest, unnecessary part connector small photo report. I apologize for the photo quality...

P.S. It is important that the pin configuration is exactly the same as on the factory cord.

Manufacturing diagrams and cable testing for HBO

How to assemble HBO diagnostic cable on Zenit and Diego Leonardo, Voila Plus, Millenium, Bingo, BRC, Diego, AKME, Digitronic, Vector, Altis, Agis, Zavoli, Nicolaus, Tartarini, Autronik (A-mon), Lovato (Lov-Eco2), Les 98 ( Landi).

I was faced with the task of collecting HBO diagnostic cable to Zenit and Diego (cable according to pinout not suitable for STAG, +12V and Gnd need to be swapped ). I started poking around on the Internet and found a clear answer - “take a k-l-line adapter and use it.” I assembled the adapter from the master kit and let’s connect it, but it doesn’t work even if you crack it!!!

I dived into the Internet and it turned out that all HBOs have a regular RS232 COM port. RS232 implies signals with amplitudes from -12 to +12 volts. Moreover, logical “1” corresponds to the level -12V, logical “0” - +12V. This is necessary for noise immunity; signals “around zero” are considered noise and are not used. There are no such signals in the gas brain block itself. Such (or compatible) signals exist (still occur) in computers, but in modern laptops They are not here.
In the gas control unit, the interface has output signal levels (roughly, not really true) “0”=0V, “1”=5V (TTL levels). For this you need a TTL level converter for max232. This is exactly the microcircuit that is in data cables for LPG Lovato.

Photo of disassembled HBO cable Lovato.

• Chip MAX23
• socket for the MAX232 microcircuit (if you solder the wires directly to the microcircuit, you can damage it by overheating it with a soldering iron or by accidentally static voltage, so we buy a socket)
• Diode 1N4004 (wasn’t in the store, bought 1N4005)
• Voltage stabilizer L7805CV
• Capacitor 470uF 16V
• Capacitor 47uF 16V
• 4 capacitors 10uF 16V
• DB-9F socket 9 pin (com port female)

I have a cord lying around at home from a Siemens DCA-510 on a PL-2303 chip, let’s tinker with it and lo and behold, it works, the software sees HBO.

And so in order - USB cable Any COM port will suit NOKIA DKU-5, CA-43 CA-45, etc., set the speed to 9600.

How to check if the cable is working - take yours cable connect to the computer, close RX and TX, open HyperTerminal in Windows XP, in Windows 7 there is no HyperTerminal, but there is an option to copy two files hypertrm.dll hypertrm.exe from Windows XP to the same place and run it and everything works too

Open, check your settings, set everything to default in the system, then launch (Start -> Programs -> Standard -> Communications) HyperTerminal.

Set the default speed, as in the picture all the settings.

If you did everything correctly, the program will print the characters that you enter from the keyboard.

This is what the terminal looks like cable for HBO AKME diego:

Terminal k HBO Zenit. Same terminal for AC Gaz Stag ( but +12 and Gnd need to be swapped ):

And here is the pinout of the DR-73 cable, this is a Stag (Digitronic) cable plus OMVL Lovato. Only +12 V and Gnd are shown.

Nothing bad will happen if you confuse RX and TX. Be careful, measure with a tester where you have +12V and don’t stick anything there (in the native wire, black is always then zero, and red is +12V) there is nothing complicated here, find 3 wires (zero) (RX) and (TX ) your tester will show some symbolic voltage greater than zero. It is better to remove the key from the ignition before connecting cable to HBO then connect the USB and turn the key so that the dash lights up and then launch the program.

In any case, nothing bad happened to me when I connected the USB and then the diagnostic connector, but it’s better to do as I wrote above.

Remember that you perform all actions at your own peril and risk. The resource administration is not responsible for damage to your property.

string(10) "error stat"

Gas equipment, or, as popularly known, LPG, is a rather complex system. various devices, which is aimed at supplying gaseous fuel to the engine. In addition to the main structural elements such as a gas cylinder or overpasses for supplying it to the engine, the system has an electronic “brain”. The latter allows you to control the HBO and diagnose its malfunctions in a fairly convenient mode. Diagnostics and configuration of equipment occurs by connecting its “brain” to a special cable. We will talk in more detail about the purpose of such a cord, the principles of its operation and use in the material presented below.

Design and purpose of the device

It's no secret that almost all components of the design of modern cars are electronically controlled. Gas equipment of machines is no exception, therefore, to control its operation, a special control unit is used, which is the electronic “brain” of the unit. A cable for HBO is required to control this unit in a way convenient for humans, that is, by special program on the computer.

Gas equipment is connected to electronic computer through a special diagnostic connector, which, as a rule, is located near the control unit. Such a connection allows you to achieve the following goals:

• Firstly, set up the gas equipment, which is necessary for the stable and correct operation of the unit;
• Secondly, install new program for gas equipment, which is needed when changing its configuration or wanting to configure the operation of the unit in a radically new way;
• And thirdly, carry out other diagnostic work, which is quite important for organizing stable and safe operation of the gas equipment.

Let us repeat, diagnostics and configuration of equipment occurs through a computer, so to organize them you need:

1. Get a cable for HBO diagnostics from the exact manufacturer that is installed on your vehicle;
2. Prepare a laptop;
3. Download and install the appropriate one on it software to carry out the necessary manipulations.

It is worth noting that most types of gas installations known throughout the world, for example from the manufacturers “Stag”, “Digitronic” and “AGIS”, operate on control units similar in design and principles of software organization, so find a universal cable for gas equipment in stores or making it yourself is not so difficult. Some experts in the “gas balloon” business, of course, do not recommend the use of such a device, but practice shows that using them is completely safe, because there are software failures in the operation of the electronic “brains” different types they don't call. By the way, universal cables have already been tested more than once when setting up the same gas systems from Stag, Digitronic and AGIS.

HBO compatibility with specific cables

It was already mentioned earlier that, despite the general similarity in the structure of control units of different gas equipment, specialized cables are used to configure them. This is largely due to two features of gas equipment:

• Differences in their pinout, which requires individual connection of the cable with a specific type of gas equipment;
• Incompatibility software, used by different manufacturers gas equipment in their control units.

Of course, you can buy a universal cable, but it is noticeably more expensive than any profile cord, so for individual use it is better to purchase devices designed specifically for your type of gas equipment. By the way, the cost of the latter is in the range of 500-1500 rubles, while universal cables are sold at a price of 2000.

Learn how to make a universal cable with your own hands

If desired and having some skills in electronics, any motorist can make a universal cable for HBO with his own hands. Typically, to achieve this goal you will need:

• telephone cables of the “DCA-510”, “DKU-5” or “CA 42-45” format on “PL-2303” or “MAX232” chips;
• soldering iron;
• insulating tape;
• 3-wire wire;
• a chip for connecting the made device to a standard connector of the LPG control unit.

The procedure for creating a cable is as follows:

Having prepared the device, it can be used for its intended purpose. For general information Let's look at the order of its use, which consists of executing the following algorithm:

1. Prepare your laptop;
2. Download and install on it diagnostic program specifically for your type of HBO;
3. Connect the equipment control unit with the prepared cable to the laptop;
4. Run the diagnostic program;
5. Carry out the necessary settings or diagnostics of the HBO, and then disconnect the created network.

As you can see, there are no particular difficulties in using and creating a cable for gas equipment. It will be especially easy for those motorists who will use the material presented today in the process of diagnosing or setting up LPG. We hope the article was useful to you. Good luck with the repairs and on the roads!

If you have any questions, leave them in the comments below the article. We or our visitors will be happy to answer them

Gas equipment intended for cars, or, as it is popularly called, gas equipment, is a complex system of various devices. Its main task is aimed at supplying gaseous fuel to the engine. I would like to add that in addition to the existing structural elements, for example, a cylinder provided for gas, and for overpasses, in fact, for supply to the motor, the system, as a rule, also has an electronic “brain”.

The latter will control the equipment as a whole, thereby diagnosing various faults in a convenient mode, which is important. As for procedures such as diagnostics and tuning of the unit, this occurs by connecting its “brain” to a special cable.

Thus, it is important to understand that the HBO diagnostic cable actually plays a vital role, so every car owner must take this into account.

What is a HBO diagnostic cable? Peculiarities

It is important to note that highlighting the main components of the design of modern vehicles, it is worth noting that they are electrically controlled. Thus, as far as , this is no exception. That is why, for effective and competent control of work, it is customary to use a control unit, which is the electronic “brain” of the unit as a whole.

The HBO cord actually plays an important role. After all, it is this cable that will serve to control this unit, and in the way that will be most convenient for a person.

Do-it-yourself cable manufacturing technology. Peculiarities

It’s hard to believe, but it’s quite possible to make a cable for 4th generation HBO with your own hands. To realize such an idea, you will need to carefully study all aspects and details of this issue, only then you will definitely succeed.

Of course, if you lack the desire and certain skills in electronics, then this will not be possible. But with all this, every car owner will definitely be able to make such a cord, remember this.

1. At the very beginning, you need to prepare the necessary tools, this includes both electrical tape and a soldering iron, telephone cables, a three-core wire, a chip provided for connecting the device you made.
2. It is important to understand that you need to find the pinout of the cable that will be used. Please note: there are a great many of them on the Internet.
3. Next, you will need to find “legs” intended for soldering, which, again, is not as difficult to do as it seems.
4. Now you can safely “ring” the chip, then solder the “legs” with a three-core wire.
5. At the moment when the chip is prepared, you need to connect an adapter to it.
6. You may be pleasantly surprised now, but know that at this stage the 4th generation HBO diagnostic cord is ready.

All that remains to be done is to prepare the device for its intended use. In order for everything to be done correctly, while respecting the technology, you will need to not deviate from the following algorithm, adhering to it. Here he is:

• at the very beginning you will need to prepare a laptop;
• after that, you can start downloading and installing a diagnostic program on it, which is ideal for your type of gas equipment. This is the most important stage of work, so it is worth approaching it comprehensively and responsibly;
• You can connect the unit control unit with the cable you prepared to your laptop. Once this is done, you can launch the diagnostic program, making the appropriate settings.

Please note that the diagnostic cable for setting up the HBO plays a vital role, so try to perform such manipulations as efficiently and competently as possible. In reality, there are no particular difficulties not only in terms of use, but also in creating a cord designed for gas equipment.

Of course, it will be easy for those motorists who, in the process of performing diagnostics or setting up gas equipment, will begin to use the described material. So, if desired, the HBO diagnostic cable will be made with your own hands; the main thing is to competently approach your goal and skillfully implement it.

Of course, no one will deny that you can always buy a ready-made, universal cable, but you need to understand in advance that it will cost much more than a profile cord. This means that for individual use you need to purchase those devices that are intended exclusively for your type of gas equipment, this is the most important thing.

Important information

You should always understand that every manufacturer of gas equipment intended for cars, as a rule, strives to make a profit through the sale of additional equipment. So here you need to decide whether you will buy a cable for setting up the HBO or whether you want to make it yourself.

Of course, we will talk about a special cable designed for programming controllers. If you want to save yourself from such a problem as cable repair, then before making the connection, you need to check the diagnostic connector pins using a multimeter.

It is imperative to take into account the fact that gas equipment, as a rule, is usually connected to an electronic computer; for this purpose, a special connector is provided, it is located not far from the control unit. Moreover, if you don’t know, then keep in mind that it is such a connection that will allow you to achieve certain results and goals. Here they are:

• First of all, there is an excellent opportunity to configure the HBO, so the diagnostic cable for the HBO will really play an important role. As a rule, such a procedure is necessary in order to achieve the correct, efficient work the unit as a whole, which is important;
• In addition, it is now possible to install a new program on the equipment. It is, as a rule, necessary at the time of changing its configuration, or when there is a desire to configure the operation of the node in a new way, which will definitely be possible to do;
• in addition, it will always be possible to perform other diagnostic work. Of course, here you need to understand that this is an important decision for organizing both stable and safe operation of gas equipment as a whole.

You should never forget that the diagnostic procedure and setting up the unit always takes place exclusively through a computer. This means that to install it you will need:

• obtain a cable intended for diagnosing the unit. Moreover, we will talk about the manufacturer whose equipment is installed on your car;
• Next you need to prepare your laptop and download the software onto it. As a rule, this is done so that the necessary manipulations can be carried out easily and simply.