Dear Suppanel users,
I want to use the software Suppanel to access an ESP8266 module on which Modbus TCP is installed.
The module has 4 inputs 24V, 4 outputs 24V and an analog line from 0 to 10V for input and output.
I would like to program a panel to switch the outputs and read the inputs.
Here is a photo of the board.
ESP8266 24V I/O Modul
FotoBoard1_5.jpg (222.75 KiB) Viewed 1973 times
Are there already examples of such an application?
Greetings from Bad Abbach in Germany
Joseph
Dear Suppanel users,
I have now managed to read out the A / D converter and to describe the D / A converter. A switch and an LED also work.
For the switch I use the address 000001,
if I use a second switch with the address 000002 I get the error message Err: 11
How could I fix the problem?
Greetings from Bad Abbach in Germany
Joseph
On the left Suppanel menu, at Help >> Error Codes >> there it explains that error 11 means Illegal data address, this is an error that the device returns, then probably the coil 000002 does not exist on its address map.
Hello Suppanel team,
I find that strange, when I access my module from the PC with the EasyModbusClient it works.
How could I isolate the problem?
Greetings to Josef
JosefBernhardt wrote: ↑Wed Feb 03, 2021 3:36 pm
Hello Suppanel team,
I find that strange, when I access my module from the PC with the EasyModbusClient it works.
How could I isolate the problem?
Greetings to Josef
The error 11 that Suppanel shows is a direct translation of Illegal Data Address exception on Modbus specs, this does not depend on whether the master is a PC or another device, it is the slave, the module which returns the error.
So it is up to the ESP8266 software that only allows several values to be read from address 1.
It looks like the Suppanel software tries to read out a value from address 2. Then I get the error message 11.
Would it be possible if I place four switches with start address 1 that the HMI software reads four values from address 1 at the same time and not individually with different start addresses.
So it is up to the ESP8266 software that only allows several values to be read from address 1.
It looks like the Suppanel software tries to read out a value from address 2. Then I get the error message 11.
The 8 ( the 5th bit set to 1) means a Modbus exception, and the 02 means Illegal Data Address, it means the ESP8266 doesn't recognize addresses 2, 3 or 4 as valid addresses. I don't know why, I never uses that module. Suppanel translates this exception to Error 11
JosefBernhardt wrote: ↑Fri Feb 05, 2021 10:12 am
Would it be possible if I place four switches with start address 1 that the HMI software reads four values from address 1 at the same time and not individually with different start addresses.
in this case Suppanel makes a reading for each of the switches, with other more advanced protocols (Connections) like Ethernet/IP or OPC UA, also supported, Suppanel can read several variables in a single request.
Suppanel incorporates an internal OPC UA server that supplies simulated data for the demo panels. you can put any of them in Design Mode and see how it is configured.
You can connect to this public server on the internet from Unified Automation that generates simulated data and also admits secure connections: opc.tcp://opcuaserver.com:48010
