Rockwell Automation 1747-ASB Remote I/O Adapter - Manual (Page 117)

Publication 1747-UM006B-EN-P - June 2003
Application Examples 8-13
and output image remain unassigned to any slot because there is no
slot 4 in the chassis. Due to slot pairing, slot 3 can use the extra image
space.
Because the specialty I/O mode chosen is discrete mode and the
1747-ASB module is configured for 2-slot addressing, all specialty
modules having one word or less of input and output image are
discretely mapped.
Slot 1 contains an 8-point output module, Catalog Number 1746-OA8,
that uses the output image assigned to slot 1. The input image
assigned to slot 1 is unused. Slot 2 contains a combination module,
Catalog Number 1746-IO12 that uses the input and output byte
assigned to slot 2.
Because there is no slot 4, the image assigned to slot 4 can be used by
slot 3. A 16-point input module, Catalog Number 1746-IA16 is installed
in slot 3, using the input images assigned to slots 3 and 4. The output
image for slots 3 and 4 is not used.
RIO Address Label Examples
Due to the 1747-ASB module's addressing modes and RIO link
operation, the I/O modules controlled by the 1747-ASB module are
addressed by the SLC processor based on the slot location of the SN
and the word that the I/O module uses in the SN image. A label kit is
included with each 1747-ASB module to assist you in addressing I/O
modules.
Logical
Rack 0
I:3.0
I:3.1
I:3.2
I:3.3
I:3.4
I:3.5
I:3.6
I:3.7
I:3.8 Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 0 1747-ASB
Module 2
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
IO12
IA16
Logical
Rack 0
O:3.0
O:3.1
O:3.2
O:3.3
O:3.4
O:3.5
O:3.6
O:3.7
O:3.8 Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 0 1747-ASB
Module 2
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
IO12 OA8
IA16
Bit Number (Decimal) 0 7 8 15
SLC Processor Input Image
Bit Number (Decimal) 0 7 8 15
SLC Processor Output Image