Toshiba PROSEC T3H user manual Global

2. Expanded Functions

When “GLOBAL” setting is used, the link registers of “GLOBAL” setting block are assigned to both CH1 and CH2 S20’s.

T3H’s link register	Block	Setting		CH1 S20	CH2 S20
W		CH1	CH2	scan memory	scan memory
W0192 - W0255	4	LINK		0192 - 0255	-
W0256 - W0319	5	GLOBAL		0256 - 0319	0256 - 0319
W0320 - W0383	6	GLOBAL		0320 - 0383	0320 - 0383
W0384 - W0447	7	GLOBAL		0384 - 0447	0384 - 0447
W0448 - W0511	8	GLOBAL		0448 - 0511	0448 - 0511
W0512 - W0575	9	LINK		0512 - 0575	-
W1216 - W1279	20		LINK		0192 - 0255
W1280 - W1343	21			-	-
W1344 - W1407	22
W1408 - W1471	23
W1472 - W1535	24
W1536 - W1599	25		LINK		0512 - 0575

•The blocks 1 - 16 are dedicated to the CH1 S20, and the blocks 17 - 32 are dedicated to the CH2 S20.

It is not allowed to assign the blocks 1 - 16 to CH2, and blocks 17 - 32 to CH1.

•For the blocks set as “LINK” or “GLOBAL”, the T3H performs data read from S20 (for data receive area) and data write to S20 (for data send area).

The data transfer direction (read or write) is automatically decided by the T3H according to the S20’s receive/send setting.

•For the blocks set as “GLOBAL”, the data transfer is as follows.

1)If CH1 is receive and CH2 is send;

CH1 receive data is read and written into both W register and CH2.

2)If CH1 is send and CH2 is receive;

CH2 receive data is read and written into both W register and CH1.

3)If both CH1 and CH2 are send;

W register data is written into both CH1 and CH2.

4)If both CH1 and CH2 are receive;

The receive data of “GLOBAL” setting channel is read and stored in W register.

NOTE

In case of TOSLINE-S20LP, it has 4096 words of scan memory. The leading 2048 words can be assigned straight to W register. The following 2048 words can be accessed by using XFER instruction.

User’s Manual 33