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ProWORX Nxt Configuration
840 USE 106 00 January 2003 219
Field and
functions
The following table describes the functions of the fields of the <config extensions>
<Hot Standby (Quantum)> dialog screen
Description The Command/Status Registers dialog is used to control or monitor various
parameters of a Quantum Hot Standby system.
Field Function
Command Register Use to specify the 4x register that will be used as the command register.
Use this register to control various parameters of the Hot Standby system
Non-Transfer Area; Start Address Use to specify first 4x register of a group of registers that will not be
transferred from primary to standby PLC.
Non-Transfer Area; length Use with the start address to specify the number of 4x registers that will
not be transferred
State RAM Transferred Use to select State Ram transfer options:
All State Ram: all configured state ram transferred
Routine only: all state ram defined in routine transfer table
Default (12K):
All 0x and 1X discretes up to 8192 each transferred
All 3x and 4x registers configured transferred if combined they total
less than 10000
1000 3x and all 4x registers (up to combined total of 1000)
transferred, if configured combined total of 3x and 4x registers is
greater than 1000
Routine and Extra: all state ram defined in routine transfer table and
extra transfer table
Routine Transfer Table Use to define the state ram (0x,1x,3x,4x) to be transferred every scan.
Each input must be a multiple of 16 and 4x requires minimum of 16.
Extra Transfer Table
Use to define the state ram (0x,1x,3x,4x) to be transferred in multiple
scans. Each input must be a multiple of 16.
Scans to Transfer: Used to specify the number of scans in which to
transfer the extra state ram