IC-Module for EtherNet/IP
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Transmission block with fixed length
Command code
(1 byte)
Not
used
(2 bytes)
Data length
(2 bytes)
Description
0x40
0xXXXX
1-128
READ_WRITE_BULK
0x00
0xXXXX
0xXXXX
NO_OPERATION*
Transmission block with variable length (1-16/128 words)
Data area
0x0000-0xFFFF"
The status response has almost the same structure and meaning as
read access with 1 byte. In the event of an error, a 16-bit wide
register address is at position 4 and 5 for this transmission type, at
which the first error occurred when reading or writing. The status is
transmitted in the first transmission block that follows the data block
with variable length.
Transmission block with fixed length
Status code
(1 byte)
Error code
(2 bytes)
Not used
(2 bytes)
Description
0x00
0xXXXX
0xXXXX
NO_PREVIOUS_OPERATION
0x10
0x0000
0xXXXX
READ_WRITE_SUCCESS
0x20
ERROR_CODE
1
0xXXXX
READ_WRITE_FAILURE
In the event of an error during bulk access (status "0x020"), the data
transmitted by the module from the data block with variable length is
invalid and must be discarded by the Master.
Components
