A - 7
A Appendices
E3NW-ECT EtherCAT Digital Sensor Communication Unit Operation Manual (E429)
A-1 Object Dictionary
A
A-1-5 PDO Mapping Object
Indexes 1600 hex to 17FF hex are used for Receive PDO mapping, and indexes 1A00 hex to 1BFF hex
are used for Transmit PDO mapping. Sub-indexes after Sub-index 1 provide information about the
application object being mapped.
A-1-5 PDO Mapping Object
31 16 15 8 7 0
Indexes
Sub
Indexes
Bit length
MSB LSB
Bits 0 to 7 : Bit length of the mapped object.
(For example, for 32 bits, 20 hex is given.)
Bits 8 to 15 : Sub-index of the mapped object.
Bits 16 to 31 : Index of the mapped object.
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