Maple Systems MAPware-7000 - Manual (Page 303)

MAPware-7000 Programming Manual 303
1010-1040, Rev. 02
Retentive Registers (R)
These are general registers which can be used at the discretion of the HMC programmer. This
area of memory is retentive so any data stored in these registers remains once power has been
removed from the HMC.
Note that reading/writing to these registers requires more processing time than does using any
of the other registers in memory due to their retentive nature. Therefore, be aware that using
these registers in ladder logic blocks require more processing time.