Rockwell Automation 57C570 AutoMax PC3000 User Manual - Manual (Page 165)

14Ć7
14.3.1 Specifying the Location of the Target
BlockĆTransfer Module
Each blockĆtransfer request must have an I/O module location
associated with it. The location of the target I/O module specifies its
I/O rack, group, and the slot number within the I/O group. You set
these parameters by setting bits of the variable associated with the
second word within the request's status and control table, which is
labeled Rack/Slot/Group/Req. The bits and their meaning are:
xxxx xxxx xxxx xxxx
0 7 15 11
I/O Rack (numbered in octal)
Slot Number I/O Group
Request Type
For more information about determining the location of a
blockĆtransfer module, see section 4.2.3.
To specify the target blockĆtransfer module's location, do the
following:
Step 1.
Specify the I/O rack within which the module resides
(0Ć37
8
) by loading the remote rack number into bits 0Ć4 of
the variable associated with the request's
Rack/Slot/Group/Req register.
For example, if the target module for request 1 was
located in rack 7, bits 0Ć4 of register 833 should contain
the value of 7.
833: xxxx xxxx xxx0 0111
Step 2. Specify the slot number of the blockĆtransfer module by
setting bit 8 of the variable associated with the
Rack/Slot/Group/Req register. The slot number is either 0
or 1, and specifies the position of the module in the I/O
group.
If the I/O chassis containing
the blockĆtransfer module
is using:
Set bit 8 of the variable associated with the
request's Rack/Slot/Group/Req register to:
1Ć or 1/2Ćslot addressing 0
2Ćslot addressing 0, if the module is in the low slot of the I/O
group
1, if the module is in the high slot of the I/O
group
For example, if the target module for request 1 was
located in slot 0 of its I/O group, then bit 8 of register 833
should contain the value of 0.
833: xxxx xxx0 xxx0 0111
Step 3. Specify the I/O group to which the target module belongs
by loading a value of 0Ć7 in bits 9Ć11 of the variable
associated with the Rack/Slot/Group/Req register.