The Data Area used to send the sample data with uncompressed time stamping is stored in Holding Registers 40200 through 40213. The sample data being sent is:

	Register	Local Example	Bridge Example
Network address of sending PLC	40200	0	1030(x0406)
	40201	0	0
	40202	0	0
Address of point receiving unsolicited data	40203	30017	30017
Number of bytes of data.	40204	32770	32770
First timestamp word	40205	24576	24576
Second timestamp word	40206	5	5
Third timestamp word	40207	14	14
Fourth timestamp word	40208	1997	1997
Fifth timestamp word	40209	11	11
Sixth timestamp word	40210	43	43
Seventh timestamp word	40211	09	09
Eighth timestamp word	40212	985	985
The unsolicited value	40213	21035	21035

Holding Registers 40203 through 40208 contain a command to the CIMPLICITY Modbus TCP/IP communications enabler to set the value of a point at Input Register 17 to a value of 21035 with a date of May 14, 1997 and time 11:43:09.985.

The network address of the sending programmable controller is the Modbus TCP/IP.

For local data, the path is only 1 address long and the sending controller's IP address is put into the lower byte of the first holding register. The other two holding registers are set to zero.

For bridged data, the path may be 5 addresses long. The example above shows the path 6.4.0.0.0.

More information

Sample MSTR Block - Uncompressed Timestamping with mSecs.

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