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["human-readable" register number and is 1 more than the "on-the-wire" address"] to me, that just seems to create confusion... Thanks for the explanation.

I have been trying this with a Modbus RTU device. I agree it is very useful and usable software; thanks for your contribution! Register addresses seem to be off by one though, e.g., to write register 3008 you use register 3009 in Open ModScan.

Have you set the Pulse / Rev to the lowest setting on the DM860 ?

Hello Radu, I don't have any direct knowledge, I just found the information that I shared on the internet. You can find the CL200 manual, which says that the X31 Interface is used for programming; and "A premanufactured connecting cable is available to connect to the X31 interface connector...

From the Bosch CL200 manual: The PLC program is produced with the use of the Bosch proprietary WinSPS software application. The CL200 is programmed with the aid of a PC via the serial COM port.With the use of the PC, the PLC program can also be written without requi-ring the physical presence...

According to: https://sbc-support.com/uploads/tx_srcproducts/26-734_EN_Manual_PCD4_02.pdf "Batteries can be changed while the supply is connected, without loss of data and in all operating modes. The battery box is located beneath the nameplate (see also PCD4.M170, Changing batteries)."

These tools generally capture messages identifying the Profibus addresses of the devices involved.

There are a few such tools that can do this, here's one: https://procentec.com/products/profibus/profitrace/ Here's another: https://industrial.softing.com/products/network-tester-and-analyzer/profibus-tester-5.html

There are digital panel meters like: https://www.predig.com/products/product_category/digital-panel-meters-448 that accept process voltage (0-5 V, 1-5 V, etc.) and current (4-20 mA).

Did you check the Limits settings?

I used a Baldor ID5602 Series 5 Inverter to control a 1 HP 3-phase motor. No programming required, speed controlled by supplied Main Speed Potentiometer (5K). Least expensive is their open chassis model.

Well, your code in main should execute led2=1; and then exit. Embedded systems typically do not exit, as there is nowhere to go...

The DCS was reading pressure using HART? If so, it likely acts as a Primary HART master. If AMS is configured as Primary HART master, it would conflict with the DCS.

Assuming your 475 supports FF (and has the DD files for the DVC6200f), you should be able to setup a test segment, it can act as the FF host. For the segment you could use a Relcom Power Hub "Fieldbus Segment in a Box" or similar: https://www.relcominc.com/power-hub , you would connect both the...

Exida has some training courses that may be applicable: https://www.exida.com/Functional-Safety

I have not used a device like this to say, but your attached specification sheet states: Local User Interface (LUI) functions: Local control of the valve. Conceivably, you could supply power and use the LUI to test the valve.

There's this Smar product: https://www.smar.com/en/product/if302-if302-triple-channel-current-to-foundationtm-fieldbus-converter "The IF302 receives a current signal, typically 4-20 mA or 0-20mA, and makes it available to the Fieldbus system."

Multidrop HART has all the transmitter outputs connected together. To do that, all the transmitters must be set to output fixed current, typically 4 mA, otherwise they would be fighting against each other. You may be able to use a gateway that has separate channels for each transmitter, but...

Well, Ethernet is not going to work with the RS-485 inputs on your drive. PCs do not normally support RS-485, you need an adapter; the FTDI device should work. Next you will need an application for your PC that has Modbus [master] capability.

In this video: it appears that 132 was used.