Publication 1747-UM006B-EN-P - June 2003
1-12 Overview
• 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 two 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 (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.
• 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 is 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.
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