User manual

Transferring Data Using Communication Blocks
166
33002479 06 07/2008
Control Block
Usage for TCP/IP
Ethernet
Control Block
Usage for SY/
MAX Ethernet
Register Meaning
CONTROL[1] 1 = write data
CONTROL[2] Indicates the error status
CONTROL[3] Number of addresses sent to the slave
CONTROL[4] Determines the CONTROL[ ] start address of the slave to which the data is
written
CONTROL[5] Routing register
Most significant byte: network adapter module slot
Least significant byte: MBP on Ethernet transporter (MET) mapping index
CONTROL[6]
...
CONTROL[7]
Each address contains 1 byte of the 32-bit IP address.
Register Meaning
CONTROL[1] 1 = Write data
CONTROL[2] Indicates the error status
CONTROL[3] Number of addresses sent to the slave
CONTROL[4] Determines the %MW starting register in the slave to which the data is
written, e.g., 1 = %MW1, 49 = %MW49)
CONTROL[5] Routing register
Most significant byte: network adapter module slot
Least significant byte: destination drop number
CONTROL[6]
...
CONTROL[9]
Terminator: FF hex