HMS Anybus X-gateway CANopen User Manual page 56

CANopen Object Implementation
7.3.3 Local Object Dictionary Index Mapping
The data in the Input/Output Buffers is mapped to three different areas in the Local Object
Dictionary: Byte, Word and Long, using different data types.
Example:
Application data bytes 2 - 5 are mapped to the following object indices:
• Byte object index 2000h, subindex 1 - 4
• Word object index 2010h, subindex 1 - 2
• Long (double word) object index 2020h, subindex 1
Words and double words use Motorola (big-endian) format.
The following relation chart shows the transmit data area. The receive data area has the same
structure, but with indices for byte objects starting at 2100h.
The first two bytes are reserved for the Control Word (transmit buffer) and Status Word (receive buffer)
and cannot be used for data exchange.
Anybus ® X-gateway ™ CANopen ® PROFINET ® IRT (2.32) User Manual
54 (60)
SCM-1202-029 1.2 en-US