26
this variable is true, then it indicates normal communications on Port A of the I/O communications link.
Connector J1 on the front of a 300
0 chassis processor functions as the “A” I/O Port to the node
processors.
I/O Path B Status
Bool Variable can be used to determine any failure on the communications link
between the selected right (Primary) Chassis Processor and Node Processors on Port B. If the value of
this variable is true, then it indicates normal communications on Port B of the I/O communications link.
Connector J2 on the front of a 3000 chassis processor functions as the “B” I/O Port to the node
processors.
Note: Only one I/O port is required for node to chassis communications. The communications
port redundancy on each chassis processor increases system availability.
Redundant Processor Online
Bool Variable can be used to determine if the left (Secondary) Chassis
Processor is o
perational or not. If this value is “True”, the left (Secondary) Chassis Processor is online
and operational (Performing I/O).
Note: Only one chassis processor is required for node to chassis communications. The chassis
processor redundancy increases system availability.
I/O Path RA Status
Bool Variable can be used to determine any failure on the communications link
between the selected left (Secondary) Chassis Processor and Node Processors on Port A. If the value of
this variable is true, then it indicates normal communications on Port A of the I/O communications link.
Connector J1 on the front of a 3000 chassis processor functions as the “A” I/O Port to the node
processors.
I/O Path RB Status
Bool Variable can be used to determine any failure on the communications link
between the selected left (Secondary) Chassis Processor and Node Processors on Port B. If the value of
this variable is true, then it indicates normal communications on Port B of the I/O communications link.
Connector J2 on the fron
t of a 3000 chassis processor functions as the “B” I/O Port to the node
processors.
Card Online 00
– 17
can be used to determine if the I/O card is online and scanning I/O. If the value of
this variable is true, then the corresponding I/O card in the indicated slot number is online. The variable
does not indicate an error-free operation of the I/O card. If this variable is false, then the I/O card is
offline and is not scanning any I/O.
