Schneider Optics Modicon Quantum Ethernet manual Peer Cop Health Mstr Operation, Communications

The MSTR Instruction

3.2.9Peer Cop Health MSTR Operation

The peer cop health operation (type 9 in the displayed register of the top node) reads selected data from the peer cop communications health table and loads that data to specified 4x registers in state RAM. The peer cop communications health table is12 words long, and the words are indexed via this MSTR operation as words 0 ... 11.

Control Block	The registers in the MSTR control block (the top node) contain the information for a
Utilization	Peer Cop Health operation as described in the following table:
	Register	Function	Content
	Displayed	Operation Type	9
	First implied	Error status	Displays a hex value indicating an MSTR error,
			when relevant.
	Second implied	Data Size	Number of words requested from peer cop table
			(range 1 ... 12).
	Third implied	Index	First word from the table to be read (range 0 ...
			11, where 0 = the first word in the peer cop table
			and 11 = the last word in the table).
	Fourth implied	Low byte	Quantum backplane slot address of the NOE
			module.
	Fifth ... Eighth	Destination	Each register contains one byte of the 32-bit IP
	implied		address.
Peer Cop
	The peer cop communications health table (shown below) comprises 12
Communications	contiguous register that can be indexed in an MSTR operation as words 0 ... 11.
Health Status	Each bit in each of the table words is used to represent an aspect of
Information	communications health relative to a specific node on the TCP/IP network:

The bits in words 0 ... 3 represent the health of the global input communication expected from nodes 1 ... 64. Since global input is not supported these bits are set to zero.

zThe bits in words 4 ... 7 represent the health of the output from a specific node. The bits in words 8 ... 11 represent the health of the input to a specific node.

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