Rockwell Automation 1747-ASB Remote I/O Adapter - Manual (Page 125)

Publication 1747-UM006B-EN-P - June 2003
Application Examples 8-21
1747-ASB Module 1 I/O Mapping Details
Because 1747-ASB module 1 is configured for 2-slot addressing, has
eight logical groups and 16 I/O slots available, all of the slots present
are mapped into the PLC-5/40 image. No extra slots in the chassis or
extra words in the image remain. Each slot is assigned one byte in the
PLC-5/40 input and output images.
1747-ASB module 1 is configured for block transfer specialty I/O
mode. Therefore, all specialty I/O modules are block transfer mapped.
If specialty I/O modules are used, their paired slots can only use
8-point (or smaller) discrete input, discrete output, or block transfer
mapped specialty modules, as shown below. 16-point discrete output
modules can be used if their paired slots have discrete (16-point or
less) input modules in them, as shown below. 32-point modules
cannot be used with 2-slot addressing.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
ASB 1 1746-NIO4V 1746-OW8 1746-OW16 1746-IA16 1746-OG16 1746-IG16 1746-OW8 1746-OV8 1746-OB16 1746-IB16 1746-OA8 1746-NO4V 1746-OW16 1746-IA16 1746-OV16 1746-IV16
Slot Pair 1 2 3 4 6 7 8 5
Bit Number Octal
Logical
Rack 1
0 7 10 17
Logical
Rack 2
PLC Processor Input Image
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
1747-ASB
Module 1
NIO4V
IA16 IA16
IG16
IG16
Bit Number Octal
Logical
Rack 1
0 7 10 17
Logical
Rack 2
PLC Processor Output Image
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7 Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
IB16 IB16
NO4V
IA16 IA16
IV16 IV16
Not Used
Not Used
1747-ASB
Module 1
NIO4V
OW16 OW16
OG16 OG16
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
OB16 OB16
NO4V
OW16 OW16
OV16 OV16
Not Used
Not Used
OW8
OV8 OW8
OA8
I:010
I:01 1
I:012
I:013
I:014
I:015
I:016
I:017
I:020
I:021
I:022
I:023
I:024
I:025
I:026
I:027
O:010
O:01 1
O:012
O:013
O:014
O:015
O:016
O:017
O:020
O:021
O:022
O:023
O:024
O:025
O:026
O:027