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Hi, Yes, the BAS sample was tested on runtime as I remember. I will try to remake the setup with runtime on a Raspberry and retest it but you have to wait for me few days, I am stuck on a few projects that already passed deadlines. Alex.

Hi, The encoder channels are as follows (at least it is supposed to be, I will double check ) encoder 1 = opto1/2; enc 2 = opto 3/4; enc 3 = opto 5/6; enc 4= opto 7/8; You will get bad results if you connect the encoder between channels for example opto 2 and opto 3. In the current...

Bas example.

Hi, We will take a look but in the meantime, you can call the cli like in your last code.

I think your problem is the conversion of the key value, please instead "print(key)" to use "print(int(key))" which will tell you the actual value used for the relay number.

I am not an expert in the open PLC but you have to assign addresses to the coils and contacts that are connected to the card. The names TRIAC1, TRIAC2, DRY_C1 ..etc are not assigned to the card but are some generic variables. You need to give PLC addresses to the variables PUMP_RUN, DRY_WELL...

Hi, The digital inputs are actually dry contact inputs, once you turn on the 1k or 10k dipswitch you will see 1 logic when you make a short between the input channel and GND. To control the led's from Modbus I need to release a new firmware version which I will do after I finish some urgent...

Hi, Did you check the dipswitches settings? It looks like you are reading the 0-10V inputs but the dipswitches are configured for thermistor resistance readings. You can read over modbus or command line either 1k thermistor 10k thermistor or 0-10V inputs but only one gives you correct values...

The command line uses stack level, but the command you listed disables the Modbus function you need to enable it.

10V input is fine. yes, Modbus address should be 3.

Another thing is that all our cards with Modbus implement RTU only. I see that modpoll knows both RTU and ASCII.

Hi, I did not receive the notifications for your messages. I'm sorry. If you look at the schematics you will see that the digital inputs are fed through a diode so logic 0 means a voltage lower than 0.5V and logic 1 means a voltage bigger than 2V (by the way you should enable the 1k or 10K...

The Raspberry serial port name is dev/ttyAMA0. For digital inputs (if there is no dry contact) the settings dipswitches do not matter.

Hi, If you disable the Modbus protocol on a card, only the first parameter count (to be 0) the rest of them have no meaning and can be any value. I filled out the Modbus.md

I am glad you fix it and you can use the cards.

How did you try to communicate with the external cards? I hope you use the modbus command options like "3relind <address> mtest" The -list command will list only the cards connected to I2C (plugged directly into the Raspberry). The modbus Address (for the slave) is computed by adding the address...

Hi, Yes, we did not have Codesys library for that HAT yet. The card implements MODBUS RTU slave so you can control it with any device with Modbus master. How you can do this with Codesys I do not know but you should start with connecting the RTD card to Raspberry that you have access to the...

I am a little rusty on Codesys, if the example project that came with the library does not answer your questions, let me know and I will remake my Codesys setup to find the answers.

I don't know much about the external relays cards and about using the Codesys as Modbus master, but the Sequent HATs are not controlled over Modbus, more, one of them acts as an RS485 transceiver for Raspberry PI Serial port so his Modbus protocol needs to be disabled.

Hi, If you use the two HATs on the same Raspberry Pi, you can use just one RS485 port because both are connected to the same Raspberry Pi pins. To use any of the RS485 ports you need to disable the card (RTD or 16-universal inputs) Modbus feature by running the appropriate command. The...