User manual

Transferring Data Using Communication Blocks
33002479 06 07/2008 177
Peer Cop Health
Description A peer cop health operation reads selected data from the peer cop communications
health table and downloads the data to the specified %MW addresses in state RAM.
To program an MBP_MSTR block to perform a clear remote statistics operation, use
function code 9 (see Operational Function Codes, p. 151).
The peer cop communications health table is 12 words long; MBP_MSTR indexes
these words with the numbers 0 ... 11.
Network
Implementation
A peer cop health operation can be performed only on Modbus Plus networks.
Control Block
Usage for
Modbus Plus
Note: Peer cop health is operational only when a peer cop-based I/O scanner has
been configured.
Register Meaning
CONTROL[1] 9 = peer cop health
CONTROL[2] indicates the error status.
CONTROL[3] Number of words wanted by the peer cop table (1...12)
CONTROL[4] First word to be read from the peer cop table, where 0 = the first word and
11 = the last word)
CONTROL[5] Routing address 1
If this is the second of two local nodes, set the value in the high byte to 1.