Rockwell Automation 1747-ASB Remote I/O Adapter Module - Manual (Page 7)

Remote I/O Adapter Module 7
Publication 1747-IN014C-EN-P - January 2003
Configuration Parameters
The DIP switches allow you to configure the following items:
•
Starting Logical Rack Number (Logical Rack) - is the 1747-ASB module’s
starting logical rack number in the scanner’s image.
•
Starting Logical Group Number (Logical Group) - is the 1747-ASB
module’s starting logical group number within the scanner’s image.
•
Baud Rate (Baud Rate) - is the 1747-ASB module’s RIO link communication
rate. The baud rate must be the same for all adapters on the RIO link.
•
Primary/Complementary SLC Chassis (PRI/COMP) - determines
whether the 1747-ASB module appears to the scanner as a primary or
complementary chassis.
•
Adapter Image Size (IMAGE SIZE) - indicates the I/O image size to be
reserved for the adapter. It can be any size between 2 and 32 groups in
2 logical group increments.
•
Hold Last State (HLS) - determines whether the discrete output modules
are held in their last state when:
– RIO link communication with the 1747-ASB module is lost.
– The scanner inhibits the 1747-ASB module.
– The scanner sends Reset, Adapter Decide commands to the 1747-ASB
module.
•
Processor Restart Lockout (PRL) - determines whether the 1747-ASB
module automatically resumes RIO link communications if communication is
lost and then restored.
•
Link Response Time (RESP) - selects restricted or unrestricted RIO link
response time.
•
Last Chassis/PLC-3 Backup (LAST CHA) - When the 1747-ASB module is
used with a PLC-2 or PLC-5, this switch indicates to the scanner that the
1747-ASB module is the last adapter mapped into the 1747-ASB module’s
highest logical rack. When using a PLC-3 processor, the switch determines
whether the 1747-ASB module supports the PLC-3 backup function.
•
Addressing Mode (ADDR MODE) - determines the 1747-ASB module’s
remote chassis and remote expansion chassis addressing mode. 2-slot,
1-slot, and 1/2-slot are available.
•
Specialty I/O Mode (SP MODE) - determines whether the 1747-ASB
module discretely maps or block transfer maps specialty I/O modules in its
remote chassis and remote expansion chassis.
•
I/O Module Keying (KEY) - determines if the 1747-ASB module saves its
current I/O module and DIP switch configuration to its non-volatile memory,
or if the 1747-ASB module compares the current I/O module and DIP switch
configuration to the one saved in its non-volatile memory.