A Appendices
A - 2
E3NW-ECT EtherCAT Digital Sensor Communication Unit Operation Manual (E429)
A-1 Object Dictionary
The CAN application protocol over EtherCAT (CoE) protocol uses the object dictionary of CAN
application protocol as its base. Each object is assigned with an index of four-digit hexadecimal value.
The indexes are configured in the areas below.
This profile uses the following data types.
A-1-1
Object Dictionary Area
Indexes
Area
Contents
0000 hex-0FFF hex
Data Type area
Definitions of data types
1000 hex-1FFF hex
CoE Communications area
Definitions of variables that can be used by all
servers for designated communications
2000 hex-2FFF hex
Manufacturer Specific area 1
Variables defined for all OMRON products
3000 hex-5FFF hex
Manufacturer Specific area 2
Variables defined for E3NW-ECT EtherCAT Sensor
Communication Units
6000 hex-9FFF hex
Device Profile area
Variables defined for CiA401 generic I/O module
device profiles (profile specifying the CAN
application protocol interface for devices with digital
I/Os and analog I/Os)
A000 hex-FFFF hex
Reserved area
Area reserved for future use
A-1-2
Data Types
Data Types
Code
Size
Range
Boolean
BOOL
1 bit
true(1), false(0)
Unsigned8
U8
1 byte
0 to 255
Unsigned16
U16
2 bytes
0 to 65535
Unsigned32
U32
4 bytes
0 to 4294967295
Unsigned64
U64
8 bytes
0 to 18446744073709551615
Integer8
INT8
1 byte
−
128 to 127
Integer16
INT16
2 bytes
−
32768 to 32767
Integer32
INT32
4 bytes
−
2147483648 to 2147483647
Visible string
VS
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Summary of Contents for E3NC
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