Method for monitoring field devices in the field of industrial data acquisition, comprising the steps of: reading in field device data comprising a plurality of subgroups of field device data; determining points in time at which the respective subgroups of the read-in field device data were generated; assigning each of the subgroups of the read-in field device data to a respective field device (406 - 409); assigning a first group of the subgroups of the read-in field device data to a first data type (105, 106, 107, 108, 109, 110); assigning a second group of the subgroups of the read-in field device data to a second data type (105, 106, 107, 108, 109, 110); displaying graphically the subgroups of the read-in field device data in a graph as a function of the points in time at which they were generated and as a function of their data type (105 - 106); the graph comprising a coordinate system having a first axis and a second axis; the subgroups of the read-in field device data being represented in the graph by symbols (111, 112, 113); a particular symbol being positioned at a first coordinate on the first axis and at a second coordinate on the second axis; the first coordinate corresponding to the points in time at which the relevant subgroup of the read-in field device data was generated; characterised in that the second coordinate corresponds to the data type (105, 106, 107, 108, 109, 110) to which the subgroup of the read-in field device data was assigned; subgroups of the read-in field device data that are determined over a period of time being represented by bars (114, 115); a particular bar extending along the first axis from a third coordinate to a fourth coordinate; the bar being positioned on the second axis at a fifth coordinate; the third coordinate corresponding to the start of the generation of the subgroup of the read-in field device data; the fourth coordinate corresponding to the end of the generation of the subgroup of the read-in field device data; and the fifth coordinate corresponding to the data type (105, 106, 107, 108, 109, 110) of the subgroup of the read-in field device data. reading in field device data comprising a plurality of subgroups of field device data; determining points in time at which the respective subgroups of the read-in field device data were generated; assigning each of the subgroups of the read-in field device data to a respective field device (406 - 409); assigning a first group of the subgroups of the read-in field device data to a first data type (105, 106, 107, 108, 109, 110); assigning a second group of the subgroups of the read-in field device data to a second data type (105, 106, 107, 108, 109, 110); displaying graphically the subgroups of the read-in field device data in a graph as a function of the points in time at which they were generated and as a function of their data type (105 - 106); the graph comprising a coordinate system having a first axis and a second axis; the subgroups of the read-in field device data being represented in the graph by symbols (111, 112, 113); a particular symbol being positioned at a first coordinate on the first axis and at a second coordinate on the second axis; the first coordinate corresponding to the points in time at which the relevant subgroup of the read-in field device data was generated; characterised in that the second coordinate corresponds to the data type (105, 106, 107, 108, 109, 110) to which the subgroup of the read-in field device data was assigned; subgroups of the read-in field device data that are determined over a period of time being represented by bars (114, 115); a particular bar extending along the first axis from a third coordinate to a fourth coordinate; the bar being positioned on the second axis at a fifth coordinate; the third coordinate corresponding to the start of the generation of the subgroup of the read-in field device data; the fourth coordinate corresponding to the end of the generation of the subgroup of the read-in field device data; and the fifth coordinate corresponding to the data type (105, 106, 107, 108, 109, 110) of the subgroup of the read-in field device data.