THIS IS A DIGITAL INPUT MODULE WHICH PASSES RECEIVED DIGITAL SENSOR DATA TO A FIELDBUS-SLAVE AND THEN VIA THE FIELDBUS TO A FIELDBUS-MASTER, WHICH IS PART OF A CONTROL DEVICE (USUALLY A PROGRAMMABLE LOGIC CONTROLLER).

GENERAL RULES 1 AND 6 FOR THE INTERPRETATION OF THE COMBINED NOMENCLATURE. EU REGULATION 1247/2011. THE HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 8538. THE TEXT TO CN CODES 8538 90 99.