Filter
Top Products
Using a Quantum 984 HSBY System
82
840 USE 106 00 January 2003
The Reverse Transfer Registers
Reverse Transfer You can use the reverse transfer registers to transmit diagnostic data from the
Standby controller to the Primary controller. When you choose to define a
nontransfer area, registers 4x and 4x + 1 in the nontransfer block are copied from
the Standby to the Primary controller. This is opposite from the normal forward state
table transfer from the Primary to the Standby.
If you choose not to use the reverse transfer registers, do not connect the CHS
bottom input to the rail in your ladder logic program, so the inputs to these registers
are not enabled.