1747-asb module 2 configuration details -11, Slc processor input image, Slc processor output image – Rockwell Automation 1747-ASB Remote I/O Adapter User Manual
Page 115
Publication 1747-UM006B-EN-P - June 2003
Application Examples 8-11
1747-ASB module 1 is not configured as the last chassis because the
highest numbered logical group it uses (Group 3) is not the highest
numbered logical group in the highest logical rack it resides in. The
RediPANEL uses the highest numbered logical group (Group 7) in
logical rack 2.
1747-ASB module 1 is configured for hold last state and processor
restart lockout. If the RIO communications cable is removed and
reconnected during normal RIO communications, the discrete outputs
remain in their last state and the 1747-ASB module does not resume
communicating with the scanner, until the processor restart lockout
terminals are momentarily shorted together. For more information
regarding processor restart lockout, refer to chapter 4.
1747-ASB module 1 is configured as a complementary chassis.
Because complementary I/O is not being used, there is no need for a
primary chassis.
1747-ASB Module 2 Configuration Details
Because 1747-ASB module 2's image does not cross the logical rack
boundary, 1747-ASB module 2 appears as one logical device to the
scanner.
1747-ASB module 2 is configured as last chassis because it has the
highest numbered logical group (group 1) in the highest numbered
logical rack (rack 0).
1747-ASB module 2 is not configured for hold last state and processor
restart lockout. If the RIO communications cable is removed and
reconnected during normal RIO communications, the discrete outputs
are reset and the 1747-ASB module automatically resumes
communicating with the scanner.
1747-ASB module 2 is configured as a complementary chassis.
Because complementary I/O is not being used, there is no need for a
primary chassis.
Bit Number (Decimal
0
7
8
15
Logical
Rack 0
SLC Processor Input Image
I:3.0
I:3.1
I:3.2
I:3.3
I:3.4
I:3.5
I:3.6
I:3.7
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
1747-ASB
Module 2
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
IO12
IA16
Bit Number (Decimal)
0
7
8
15
Logical
Rack 0
SLC Processor Output Image
O:3.0
O:3.1
O:3.2
O:3.3
O:3.4
O:3.5
O:3.6
O:3.7
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
1747-ASB
Module 2
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
IO12
OA8
IA16