User manual

Transferring Data Using Communication Blocks
33002479 06 07/2008 179
Read CTE
Description A read CTE operation reads a specified number of bytes from the Ethernet
configuration extension table in the specified buffer of PLC memory. The bytes to be
read start with a byte offset at the start of the CTE table. The contents of the CTE
table are displayed in the DATABUF output parameter. (see Input Parameters,
p. 149)To program an MBP_MSTR block to perform a clear remote statistics
operation, use function code 11 (see Operational Function Codes, p. 151).
Network
Implementation
A read CTE operation can be performed on TCP/IP Ethernet and SY/MAX Ethernet
networks.
Control Block
Usage for TCP/IP
Ethernet
Register Meaning
CONTROL[1] 11 = read CTE
CONTROL[2] Indicates the error status
CONTROL[3] The length setting: a value from 12 to 37
CONTROL[4] No significance
CONTROL[5] Routing register
Least significant byte = mapping index
Either a value displayed in the byte of the register or is not used.
or
Most significant byte = network adapter module slot
CONTROL[6]
...
CONTROL[9]
The number shown in the least significant byte in the area 1 through 16
indicates the slot where the optional module is located.