Troubleshooting is extremely easy with Modbus systems. The integrated error diagnosis function can be used to call up the error status via the bus query and determine the exact error point in the system. Apart from this, the bus cables should always be checked for errors or loose connections first. Device variants with a display are particularly user-friendly: in the event of a fault (e.g. communication interrupted), the display shows a plain text diagnostic message. This means that the current status of the device can be found out immediately. This saves an enormous amount of time and money.