Tx- transmission data, 0 volt 0 volt, Byte 0 1 2 – HEIDENHAIN PROFINET User Manual
Page 3: Figure 31 instance data block, db

Content
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Identification and Maintenance (I&M functions) ............................................ 52
General characteristics .................................................................... 53
Parameter requests and responses ............................................... 53
Changing the preset value .............................................................. 53
Reading the preset value ................................................................ 54
Parameter 922, read only ................................................................ 55
Parameter 925, read/write .............................................................. 55
Parameter 964, read only ................................................................ 55
Parameter 965, read only ................................................................ 55
Parameter 971, read/write .............................................................. 55
Parameter 974, read only ................................................................ 55
Parameter 975, read only ................................................................ 56
Parameter 979, read only ................................................................ 56
Parameter 980, read only ................................................................ 57
Parameter 61000, read/write .......................................................... 57
Parameter 61001, read only ............................................................ 57
Parameter 61002, read only ............................................................ 57
Parameter 61003, read only ............................................................ 57
Parameter 61004, read only ............................................................ 57
Parameter 65000 read/write ........................................................... 57
Parameter 65001, read only ............................................................ 58
Parameter 65002, read/write .......................................................... 58
Parameter 65003, read only ............................................................ 58
Example of reading and writing to a parameter............................................. 59