Omron CQM1H-SCB41 Starting Data Links, OverviewSection, PC Setup Setting, Slave words

OverviewSection 7-1

7-1	Overview
	If two PCs are linked one-to-one by connecting them together through RS-232C
	or 4-wire RS-422A/485 cable, they can share up to 64 words of their LR areas.
	The 1:1 Data Links are the same as normal Data Links in that data is not shared
	bidirectionally, i.e., the link words written by one PC are transferred to the other
	PC.
	One of the following three ranges of words can be set to be linked:
	LR 00 to LR 63, LR 00 to LR 31, or LR 00 to LR 15
	A 1:1 Data Link communications system can be created between the CQM1H
	and another CQM1H, or between the CQM1H and the CQM1, C200HX/HG/HE,
	C200HS, CPM1, CPM1A, CPM2A, CPM2C, or SRM1(-V2).
	One of the PCs is set as a 1:1 Data Link master and the other as a 1:1 Data Link
	slave. The linked words are separated into two groups of words, and the words
	written by each PC is transferred to the other PC, as illustrated in the following
	diagram.
	For example, if LR 00 to LR 63 are linked, the status of LR 00 to LR 31 written by
	the master CQM1H will be transferred to LR 00 to LR 31 of the slave CQM1H,
	and the status of LR 32 to LR 63 written by the slave CQM1H will be transferred
	to LR 32 to LR 63 of the master CQM1H.
	CQM1H or		CQM1H or other C-series PC
	other C-series PC
		Link
		RS-232C
	Serial Communications Board
		CQM1H or		CQM1H or
		other C-series PC		other C-series PC
	LR 00	Master area	LR 00
	to		to		Master area
		(sent)	LR 31		(received)
	LR 31
	LR 32		LR 32
	to	Slave area	to		Slave area
		(received)			(sent)
			LR 63
	LR 63

The words in the LR area that will be linked are set in the PC Setup as shown in the following table.

PC Setup Setting

Port 1	Port 2	Bits	Function	Setting	Master words	Slave words
DM 6555	DM 6550	04 to 07	Link words for 1:1 link	0 Hex: LR 00 to LR 63	LR 00 to LR 31	LR 32 to LR 63
				1 Hex: LR 00 to LR 31	LR 00 to LR 15	LR 16 to LR 31
				2 Hex: LR 00 to LR 15	LR 00 to LR 07	LR 08 to LR 15

7-1-1 Starting Data Links

Connect two PCs one-to-one through RS-232C or 4-wire RS-422A/485 cable, make the proper settings in the PC Setup, and turn ON the power supplies. The 1:1 Data Link will start automatically.

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