Rockwell Automation 1747-ASB Remote I/O Adapter - Manual (Page 84)

Publication 1747-UM006B-EN-P - June 2003
5-6 Installation and Wiring
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 PLC processor on a logical rack, logical group basis
and by the SLC processor on a 1747-SN scanner slot and word basis.
A remote PLC and SLC label kit is included with each 1747-ASB
module to assist you in addressing your I/O modules.
I/O Module Addressing
Labels Use the labels that correspond to the type of master you are using
(PLC or SLC). Attach the Remote PLC or SLC label to the outside
bottom of each I/O module in your 1747-ASB chassis. Fill out each
label completely. RIO address label examples are provided on pages
8-5 and 8-13 (SLC), and 8-23 (PLC).
Using a PLC as a Master
If you are using a PLC processor as a master, each I/O module is
addressed by logical rack and logical group, regardless of what
physical slot it is in.
Using an SLC as a Master
If you are using an SLC processor as a master, each I/O module is
addressed by the physical slot number of the 1747-SN scanner and the
word that the I/O module uses in the scanner image. Data is
transferred on the network by logical rack and logical group number.
IMPORTANT
When the 1747-ASB module is used with PLC
processors, use octal labels with discrete 1746
I/O modules that have 16 or more points.
(See page 5-7.)
BT Discrete
0 – 7 8 – 15
SN Slot
SN Word(s)
Remote SLC System
Rack Group(s)
BT Discrete
0 – 7 10 – 17 0 – 7 8 – 15
SN Slot
SN Word(s)
INPUT INPUT
Remote PLC System
BT Discrete
Remote SLC System
I:
O:
Rack Group(s)
Discrete
0 – 7 10 – 17
I:
O:
Remote PLC System
BT
® ®
® ®
Remote SLC Label Remote PLC Label