Henrique

And that's the worst part of Modbus.... Some manufactures implements only parts of the modbus protocol and does not explain what they did in their manuals or sometimes we do not have time or patience for reading all the stuff.... Usually, I try to communicate on the usual ways, if things go bad, I try to call for free support, and this doesn't work, then I go to the manuals.

Actually, i did't try to communicate two PLC's, but I have communicated the PLC simulator with the HMI simulator (Vijeo Designer) and Kepserver (OPC server) simultaneously.

I'm not familiar with adam6050, but I took a brief look at it. It has an Ethernet connection, so if you are accessing it, you should configure the ID to 255 in your I/O Scanning service. Configuring the ID to 1, means that you are using a Gateway Modbus IP / ModBus RTU and you want to access the equipment with modbus address 1 in the serial link through the gateway with IP 192.168.1.97. If the configuration that you did is correct, it means that ADAM6050 does not communicate directly in Ethernet, but has a embedded gateway connected to a serial port inside it, so your communication will not be as fast as Ethernet, but as slow as serial..... You have configured one line for each read and write operations, but you can configure it in one line: For example, you can put the device 1, 2 and 3 together. Device 1: IP: 192.168.1.97 unit ID = 255, Health timeout =1500, Repetitive rate=60, RD Master Object=%MW0, RD ref slave = 300, RD length = 3, WR Master Object=%MW100, WR ref slave =302, WR length = 1 It's better and faster to read 3 words in a row than reading one each time, since the longest part of the Ethernet protocol isn't the modbus part, but the TCP/IP part. And even in modbus it's better to read 3 words in a row than 1 each time. Especially if you have a serial link.... And if you are writing and reading the outputs, you must consider that ADAM6050 needs some time to refresh it's memory, so if you write to it you must consider a delay to read it back, but you don't need to do this in the network, you can use a delay in you software, it's easier, faster and saves resources.

You can't simulate two PLCs using the same IP address, but you can use a Virtual Machine or two PCs running Unity (remembering that you can install unity pro for 21 days without an additional license). You can even connect to the simulator in a different PC using Ethernet Communication.

If you configure the HMI as SLAVE and PLC as MASTER, then you must handle all communication in your PLC software using macros or the MSG instruction. You should use this kind of configuration only if you use two or more HMIs and one PLC in the same ModBus Network. To make things easier, try to configure the HMI as MASTER and the PLC as SLAVE. This way, your HMI will handle all the communications in a transparent way for you.

Did you install the USB Cable Driver? If you don't have it, look at Schneider Web Site to find the Driver Pack 2.6 or go direct to this link: http://www.global-download.schneider-elect...29?Opendocument Re-start your computer after installation....... Plug the cable before you run Twido Suite. The software will recognize the USB Cable as a COM port, that is because the TSXCUSB485 is a USB/Serial converter.

If you have a small and fast project, contact a Schneider representative and ask for a demo version that will work for 21 days. After that, as JSTOLARUK said, you must purchase a license.

1 - Twido Soft is the OLD software. You should use TwidoSuite. 2 - 4 - Using Twido Suite, you have the Describe part of the software, where you will configure the hardware and add the Altivar 71 on your network 5 - The correct setting is MODBUS, MASTER (not Address 1). 6 - You have the Macros Drive, where you are going to confgure the comm parameters and use the macro instructions in your software, check the help for Macros Drive. 7 - Use the Macro Instructions, don't have to check the ModBus addresses for Altivar 71. Separate Profile means that the commands (start/stop) and Speed Reference comes from different sources. NOT Separate Profile meand that the commands and Reference comes from the same source, for example, if you choose the commands form the Terminal then the reference will be the analog input, if you choose the NetWork, then the commands and reference will come form the network. Attached is a document showing how to configure Twido Suite + Altivar 71 in ModBus. It's in portuguese, but you will see all the configuration screens and cable diagrams. Hope it can help you. Ex_Com_TWD_ATV71_MB_MD_TWSUITE.pdf

I did this job once using SMS messages. Used the Twido serial port configured as ASCII, connected to a SR2MOD03 (Schneider Electric reference for a GSM module). As someone said, there is a guide at Schneider Electric website to help doing the job. It's not so easy, but can be made. You will also need a GSM chip from some cellular phone operator. With extra research, I think that you can send emails using the GSM chip (if you have this service) and using the modem full manual. I know that twido does not offer the email service directly, an other solution would be a PC and a OPC Server and maybe extra software. An other option would be using a Zelio Logic with the SR2MOD02. Zelio has every thing prepared for sending SMS messages, you just have to configure it, it's much easier, and the only thing to do is send a digital signal from twido to the zelio logic. I attached the modem user guide for you. sr2mod0x_se_000_en.pdf

Twido has a limitation in the size of the modbus comm packet. So you must be sure that your OPC server is not trying to use a big comm. packet. Try to change the settings and limit the comm packet. I don't know if your OPC has this settings, but Kepserver OPC, for example, has this resource.

Check your system OS. You should not use Vista with PL7 PRO. Also, in the Drivers Manager, increase the value for Link Time Out and RX/TX Delay for the UnitelWay driver (When I use USB cables, I put these values in 2 or 3). The path is Drivers Manager, UnitelWay Driver, Configuration, Edit..., Advanced Tab.

Vijeo Citect Lite uses OFS (OPC Factory Schneider) to access external variables. And yes, it does have Modbus TCP driver.

You must configure the area (number of rows x columns) for FBD projects. In Unity click on Tools → Project Settings → Editors. You will see the configuration for FBD project area. Unity is IEC based and most of the variables are non allocated variables (without a physical address), so you can program it the way you want. If you used direct address, Unity will not change to symbols. Actually it does not have the same concepts that were used in PL7 for example. You don't have symbols, you have variables. You should declare the variables with the names and types (bool, ebool, string, integer, real, etc) that you want to use. You do not have to concern about address, Unity will do that part for you. If you need to use an direct address (%M or %MW) for network or HMI or if the variable is an I/O, than you can go to the Variables & FB instances folder and inform the address for these variables in the address column.

For 230 to 24 you should have a filtered power supply, at least a rectifier + filter system and not only a transformer. If the size of your generators are not adequate to the machines that you are running, including the starting phase, you may have over-voltage problems due to the generator governor that tries to compensate the small size of the generator. And, of course, if you have been stopped for 4 years in a bad environment, you will have to verify all your installation, probably you will have problems like corrosion and bad contacts. And when you finish with the Power Supplies other problems will appear.

I'm not sure about the compatibility of Citect CSV and Twido CSV. CSV is just a spread sheet plain text kind of archive, it has at least two types: - one with comma separation and quotes for the text - another one with semicolon and no quotes. You must make sure that both CSVs are in the same format and have the same heads, same columns, same lines, same names, etc. So Citect can recognize it. To conform the Twido CSV you can use MS Excel or OpenOffice, both can open CSV files.