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Everything posted by Gabriel Franco
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Try a firmware roll-over, using the original one. If you are not sure about the version, open the applictaion and look under View | signature log menu, then install Visilogic version matching the one used previously.
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Modbus problem
Gabriel Franco replied to Serega's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
I would check: 1. Terminal resistors, only at the ends of the network. 2. Comms parameters, baud and so on. 3. Register numbers. 4. Delay time between readings of each slave. -
I can't send a simple email through my panel
Gabriel Franco replied to Juandiaza's topic in UniLogic Software
Set DNS provided by your ISP. If PLC is connected to the same network of your computer, then verify its DNS server in network connection details of Windows control panel -
V570 PLC + HMI
Gabriel Franco replied to engineer118's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
I´m affraid no. As long as I remember, INFO mode is not accesible via remote operator neither remote access, so, you would be completely blind to perform SD actions from INFO mode. I would get a new unit, exchange CPU as Kratmel suggested then verify if project is burnt. -
V570 PLC + HMI
Gabriel Franco replied to engineer118's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
Another option: use SD memory card and attempt CLONE ALL from INFO mode, so you can move program, OS, data, datatables to a new unit. I don´t remember if SD Password must be enable on ladder to be able to use this option. -
Trying to get infos from a Voltmeter connected to a MODBUS
Gabriel Franco replied to StageAge54's topic in UniLogic Software
I suggest to double check wiring, network configuration (ID, baud and so on) on the meter side and register numbering, response timeout. Also, first try using a Modbus software. Any chance that 5000 is hex? If so, set decimal address.- 3 replies
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Connecting more than one modbus slave over Panel Ethernet
Gabriel Franco replied to ray's topic in UniLogic Software
It´s a normal behavior. If you want your PLC act as slave (named server in Modbus TCP), you configure it under PLC Communications | Protocols | MODBUS | Slaves, either Ethernet or RS485. Then, it will be another slave in the network. If you want your PLC act as a master (named client in Modbus TCP), you must configure all your slaves under PLC Communications | Protocols | MODBUS | Masters, either Ethernet or RS485. Then, it will be the master in the network. All slaves must have unique IP (Ethernet) or ID (RS485).- 1 reply
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I would use two different MB, one for local control and another for Modbus commands. In ladder, use one or another based on your requirements (Modbus control enabled - remote control - or local control). In Vision family once you enable Modbus as a slave, you cannot restrict access to only desired operands, all of them can be read/writen using proper addresses.
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I´ve used it and not always gives too much information about how hot is the snap.
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Mod add, pinned in "topics almost worth pinning" 1. Initialize the socket as usual, but using UDP instead TCP. 2. Configure Modbus TCP. 3. Execute Modbus function. There is not need to open socket nor wait for open connection. What I do here is to increase a pointer to read sequencialy all slaves. 4. Wait for response and process your data. I´ve used up to 4 sockets mixing TCP, UPD and TCP_Raw with no problems at all. Keep in mind that each socket acts as a logical port, so you may use each one with its own port number and protocol. UDP disadvantages: 1. Packages lost because of inherent lack of error check of UDP, but it´s compensated with more speed and less comms overhead. 2. Some devices only accept TCP connections.
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Action performed once per week
Gabriel Franco replied to Flex727's topic in Best Programming Practices
¿have you tried DAY OF WEEK function?