DTM434 DTM435
28
ID tag type
Name
Block size [bytes]
Number of blocks
11
ST_256b
4
64
12
ST_8k
4
2048
13
I-Code SLIX2
4
79
Via the object 0x2182 0x06 it is possible to poll the ID tag type read by the device. First of all, the
detected ID tag type must be read from the object 0x2182 sub-index 0x06 and this value must be
entered in the object 0x2161.
ID tag type 2 is preset.
Recognition of the ID tag type is not supported by all ID tags.
The set ID tag type is permanently saved in the device with the "Save Parameter" object.
9.1.14 Read information of an ID tag
The information of an ID tag can be read via the objects 0x2180 to 0x2182. To do so, the ID tag has to
be within the detection range of the device.
The objects 0x2180 and 0x2182 are only valid as long as the ID tag is detected. If there is no ID tag
within the range, the values of the objects are reset to 0.
The value of the object 0x2182 can be read from the ID tag on request.
Reading of information is not supported by each ID tag type.
9.1.15 RSSI value
The RSSI value (Received Signal Strength, OV index 0x2162) informs about the strength of the
received signal that is emitted by the ID tag in front of the device:
“0“: no ID tag detected
“1“: minimum signal strength
“8“: maximum signal strength
The maximum signal strength is only reached with certain device / ID tag combinations.
The signal strength depends on the distance between the ID tag and the active face of the
device.
Position changes in the environment, e.g. of metallic objects, can influence the signal strength.
9.1.16 ID tag detection filter
The following situations result in undesired multiple ID tag detection and reading:
•
The ID tag is in the limit range.
•
The installation conditions have a negative effect on the electromagnetic field of the device.
Thus, the ID tag is not clearly detected which leads to error messages while reading or writing via
PDOs. The objects "UID filter depth" and "Zero ID filter depth" allow for error message filtering.
