Read Coil is causing adapter to disconnect from device

[turpler]

I want to control a multi channel relay card. I can connect to the device and control all channels via coil addresses (e.g. 0 to 8). I do not use Aliases. Switching the channels on and off is working well, but I do not get the status reported back. In order to receive the status information and to read the address after activation command, I ticked the box (Poll) in the Coil channel settings.
Activating the adapter it turns green but ends at a orange state after a few seconds.
Looking in the log the adapter reports : Relay1 - started polling -------------- for several lines - then the connection is being closed.

Does anyone know about this issue? What is the problem? How can it be solved?
What happens when the Poll box is ticked? Is it waiting for a response when the activate command is being sent (01 05) or is it a status query (01 01)?

Can anyone help?
Thanxx.

Modbus Adapter 6.3.2
Node.js V20.18.2
NPM 10.8.2
JS Controller ´70.6
IOBroker 7.4.10

[turpler]

Which command is send for reading one or more coils via (Poll)? For one Coil: 01 01 00 00 00 01 CRC? and for more than one coils: e.g. 01 01 00 00 00 08 CRC - or is the single command send for multiple coils/addresses for several times?

Which answer is expected?

The documentation of the board shows this information.

I also checked the communication using "modbuspoll". For the relay switching command and the status command the relay board communicates as documented and expected.

This behavior seems to be correct.
Can anyone help?