6ć38 – Rockwell Automation 6008-SV2R VMEbus remote I/O Scanner User Manual

Page 119

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Chapter

Operating in SVĆSuperset Mode

6

6Ć38

The VME master processor writes 06 (hex) to the command byte. Then
the VME master processor writes these parameters to the control status
area of the selected channel:

Byte

offset:

Parameter: Description:

0207

continuous blockĆtransfer address

The module address is the address of the I/O module from which to read the

block data. It contains the rack (0-15), group (0-7), and slot (0 or 1) numbers of

the I/O module. See Figure 6.15 on page 6Ć39.

0209

continuous blockĆtransfer tag

The VME master processor writes a number (0-31) that is an index into the

continuous block transfer read table. Only the lower byte is used.

020A

continuous blockĆtransfer

status ID

Specifies the interrupt status ID used when the blockĆtransfer is completed. See

Figure 6.16 on page 6Ć39.

020B

continuous blockĆtransfer

interrupt level

Specifies the VME interrupt level used when the blockĆtransfer is completed. See

Figure 6.16 on page 6Ć39.

021F

continuous blockĆtransfer

length of data

The VME master processor writes the number of words of continuous

blockĆtransfer data (0-64).
Use the value 0 to let the I/O module determine how many words the scanner can

read. When the blockĆtransfer completes, the 0 is replaced by the actual number

of words read.

0C01

continuous blockĆtransfer tag
READ ONLY

configure this parameter at byte offset 0209 (see above)

0C03

continuous blockĆtransfer address
READ ONLY

configure this parameter at byte offset 0207 (see above)

0C05

continuous blockĆtransfer

length of data
READ ONLY

configure this parameter at byte offset 021F (see above)

0C06

continuous blockĆtransfer

status ID
READ ONLY

configure this parameter at byte offset 020A (see above)

0C07

continuous blockĆtransfer

interrupt level
READ ONLY

configure this parameter at byte offset 020B (see above)

0C09

continuous blockĆtransfer

scanner flag

Used for Peterson semaphore. See sample code in chapter 8.

0C0B

continuous blockĆtransfer

VME flag

Used for Peterson semaphore. See sample code in chapter 8.

0C0D

continuous blockĆtransfer

turn flag

Used for Peterson semaphore. See sample code in chapter 8.

0C0F

continuous blockĆtransfer

status
READ ONLY

Indicates the status of the continuous blockĆtransfer.

0100 = block transfer disabled

0200 = block transfer pending

0400 = block transfer sent

0800 = block transfer received

0C10-0C50 continuous blockĆtransfer

write/read data

(64 words)

Contains as many as 64 words of write or read data

parameters

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