Sharp JW-20CM, JW-20RS V5 [2] Data link (Memory capacity save function)

V5 [2] Data link (Memory capacity save function)

The memory capacity save function is to provide a part of the data link area in the slave station data memory as a receiving area. A slave station can receive only the required area by relay link/ register link so that the slave stations can save on use of the memory area.

As this function can unify the receiving area address and the sending area address of each slave station, the same program can be used for each slave station. Mixed allocation of the addresses with the data link (standard function) is also possible.

							Memory
		Master station			( Standardfunction )(capacityfunctionsave)
					Slave station		Slave station
		①	00(8)		01(8)		02(8)		○ : Sending area
									● : Receiving area
								③
		②
									⑤
									⑥
									④
									Memory in
									control module
									Adresses continues in order of
							Memory in
									receiving and sending sequentially.
							JW-20CM
	Function							Contents
						Total link number of points: Maximum 2048 points (256 bytes)
9
	Relay link		N: M communication			Total number of points of sending/receiving data per slave
						station: Maximum 512 points (64 bytes)
						Total link number of points: Maximum 2048 bytes
	Register link		N: M communication			Total number of points of sending/receiving data per slave
						station: Maximum 512 bytes
				Setting contents					Setting item

①Top address of master station link area

②Number of sending data bytes of master station

Master station 's parameter

③Number of offset bytes of slave station

④Number of sending data bytes of slave station

⑤Top address of slave station link area

Slave station's parameter

⑥Number of data receiving bytes of slave station

9·4