Allen-Bradley 1756-CNB User Manual page 172

172 Attributes of the Redundancy Object
For this information
Slot number of the
1757-SRM module in this
chassis.
• Size of the last
crossload.
• Size of the last crossload
if you had a secondary
chassis.
• Size of the biggest
crossload.
• Size of the biggest
crossload if you had a
secondary chassis.
Publication 1756-UM523F-EN-P - December 2006
Get this attribute Data
Type
SRMSlotNumber INT
LastDataTransfer DINT
Size
MaxDataTransfer DINT
Size
GSV/SSV Description
GSV
GSV This attribute gives the size of data that was or would have
been crossloaded in the last scan.
• The size in DINTs (4-byte words).
• You must configure the controller for redundancy.
• You do not need a secondary chassis.
Is there a synchronized secondary chassis?
• Yes — This gives number of DINTs that was crossloaded in
the last scan.
• No — This gives number of DINTs that would have been
crossloaded in the last scan.
GSV This attribute gives the biggest size of the LastDataTransfer
Size attribute.
SSV
• The size in DINTs (4-byte words).
• You must configure the controller for redundancy.
• You do not need a secondary chassis.
• To reset this value, use an SSV instruction with a Source
value of 0.
Is there a synchronized secondary chassis?
• Yes — This gives biggest number of DINTs that was
crossloaded.
• No — This gives biggest number of DINTs that would have
been crossloaded.