Omron FQM1-CM001 Serial Communications, Section, Procedure, Source Words and Number of Link Words

Serial Communications Section 6-1

Direction of Data Transfer For example, if the number of link words is set to 10, the CJ1M CPU Unit (master) will broadcast CIO 3100 to CIO 3109 from its I/O memory and to CIO 0080 to CIO 0089 in the I/O memory of each FQM1 Controller (slaves). Each FQM1 Controller will send CIO 0090 to CIO 0099 from its I/O memory to consecutive sets of 10 words in the CJ1M CPU Unit.

CJ1M CPU Unit (master) FQM1 (slave) No. 0 FQM1 (slave) No. 1 FQM1 (slave) No. 2

Serial PLC Link Bit Area Serial PLC Link Bit Area Serial PLC Link Bit Area

CIO 3100 to CIO 3109 No. 0 CIO 3110 to CIO 3119 No. 1 CIO 3120 to CIO 3129 No. 2 CIO 3130 to CIO 3139 No. 3 CIO 3140 to CIO 3149 No. 4 CIO 3150 to CIO 3159 No. 5 CIO 3160 to CIO 3169 No. 6 CIO 3170 to CIO 3179 No. 7 CIO 3180 to CIO 3189

CIO 0080 to CIO 0089 CIO 0090 to CIO 0099

CIO 0080 to CIO 0089

CIO 0090 to CIO 0099

CIO 0080 to CIO 0089 CIO 0090 to CIO 0099

Source Words and Number of Link Words

The words that will be sent depend on the number of link words as shown in the following table.

Send direction		Send words
No. of link words	1 word	2 words	3 words	...	10 words
CJ1M (master) to	(CIO 3100)	(CIO 3100 to	(CIO 3100 to	...	(CIO 3100 to
(FQM1) slave		CIO 3101)	CIO 3102)		CIO 3109)
CJ1M to FQM1 No. 0	CIO 0080	CIO 0080 to	CIO 0080 to	...	CIO 0080 to
		CIO 0081	CIO 0082		CIO 0089
CJ1M to FQM1 No. 1
CJ1M to FQM1 No. 2
CJ1M to FQM1 No. 3
CJ1M to FQM1 No. 4
CJ1M to FQM1 No. 5
CJ1M to FQM1 No. 6
CJ1M to FQM1 No. 7

Note	CJ1M CPU Unit I/O memory addresses are given in parentheses.
Procedure	The Serial PLC Links operate according to the following settings in the PLC
	Setup and System Setup.
CJ1M (Master) Settings
1,2,3...	1.	Set the serial communications mode of the RS-232C communications port
		to Serial PLC Links (Polling Unit).
	2.	Set the link method to the Polling Unit Link Method.
	3.	Set the number of link words (1 to 10).
	4.	Set the maximum unit number in the Serial PLC Links (0 to 7).
FQM1 (Slave) Settings
1,2,3...	1.	Set the serial communications mode of the RS-232C communications port
		to PC Link (Slave).
	2.	Set the unit number of the Serial PLC Link slave.

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