Allen-Bradley ControlNet PLC-5 User Manual page 36

4-6 Monitoring and Troubleshooting Your ControlNet PLC-5 Backup System
Qˆiyvph‡v‚Ã &'$%$!#ÃAri…ˆh…’Ã
Word
5
6
7
8
9
10
11
12
13
14
(((
Definition
Reason code indicating why the processor is in the Invalid backup state. This
word is constantly updated until the processor is no longer in this state. Valid
values include:
• 0 - In valid state
• 1 - Receive handshake connection not found in I/O map table
• 2 - Send handshake connection not found in I/O map table
• 3 - Receive handshake connection wrong size
• 4 - Send handshake connection wrong size
• 5 - node address number wrong
• 6 - Operation mode word invalid
• 7 - Equivalence mode word invalid
• 8 - Designated Primary word invalid
• 9 - Max Program Scan Time word invalid
• 11 - Handshake is not 1 NUT
• 12 - Crossload parameters invalid
• 13 - NUT not established
This is a checksum of the first 3 words of this file. If the checksum is not valid,
the firmware will continuously write default values for the configuration
parameters in this file.
Partner present. This word is constantly updated by the PLC-5 processor,
indicating whether a partner processor is handshaking with the current
processor. This word is updated only when the processor is in a valid backup
state (i.e., No Control, Secondary, or Primary). Valid values include:
• 0 - No partner found
• 1 - Partner PLC-5 handshaking with this PLC-5
Output Ownership Invalid Count word. This word indicates how many
connections are not owned by this processor (Primary backup state only). This
value is -1 when the processor is in the Secondary backup state.
Lonely Primary Backup State Counter. This counter is incremented every time
this processor goes into the Lonely Primary backup state.
Operational mode of the system. Valid values include:
• 0 - Asynchronous (default)
• 1 - Synchronous
Equivalence checks; there are 6 bits defined (i.e., one bit per equivalence
check). If a bit is set, the corresponding equivalence check will be performed.
If the bit is not set, no check is performed. By default, all equivalence checking
is enabled. The remaining 10 bits in the word must be set to 0.
• Bit 0 - Ladder Logic equivalence check
• Bit 1 - Data Table Structure equivalence check
• Bit 2 - I/O Map Table equivalence check
• Bit 3 - Backup Configuration and Status file equivalence check
• Bit 4 - Force Table equivalence check
• Bit 5 - Status file equivalence check
Designated Primary. Valid values are:
• 0 - No Designated Primary (default)
• 1 - The PLC-5 processor with the odd node address is the Designated
Primary
Qualification Delay. This is the amount of time (in ms) to delay the secondary in
Run mode before becoming qualified. The default value is 0.
Maximum Program Scan Time (Synchronous mode only); the amount of time (in
ms) for the largest program scan. This value cannot be greater than 127 times
the NUT value.