Legends Assigned To The Parameters; Notes On Parameter Storage Classes S, N And D - Samson 3787 Mounting And Operating Instructions

7.3.1 Legends assigned to the parameters

r = Read
w = Write
Index = Relative index of the parameter in each block
O/S = Out of Service
MAN = Manual
AUTO = Automatic
CAS = Cascade
RCAS = Remote Cascade
ROUT = Remote Output
S = Static parameter
N = Non-volatile parameter
D = Dynamic parameter

7.3.2 Notes on parameter storage classes S, N and D

Static and non-volatile parameters are stored in the positioner's EEPROM.
If such parameters are changed over acyclic FOUNDATION Fieldbus communica-
tion, the changes are saved in the EEPROM.
The number of write accesses granted to the EEPROM is limited due to technical re-
strictions.
Writing of transducer block parameters is limited to 10,000 accesses. For all other
blocks, the limit is 1 million.
These access limits must be observed. If they are exceeded, integrity of the stored
data and thus the function of the positioner can no longer be guaranteed due to data
being overwritten.
Make sure these parameters are not constantly overwritten by acyclic FOUNDATION
Fieldbus transfers.
When transferring data to the positioner using cyclic, scheduled FOUNDATION
Fieldbus publishing (Publisher/Subscriber), these data are not saved in the EEPROM.
Parameter description
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