SAMES KREMLIN
Page 30
Manual : 573.176.112
RAM Memory
The RAM zone is available in reading in the space reserved for ModBus. The writings, depending upon the
destination can be prohibited or authorized by limiting the kind of ModBus functions to use for the access.
The passing change of a parameter to EEPROM RAM image is taken into account during the passage
from auto to manu.
Two actions cancel their effects :
A reset
An inlet in the menu of configuration of the parameters.
In the two cases, the RAM image of the EEPROM is reloaded by the EEPROM content.
The writing of the EPROM RAM image does not affect the EEPROM.
The parameters noted "not taken into account during the manu/auto passage" can only be modified by
ModBus when carrying out the following process :
Modification of the value in EEPROM
Reset
The kind of access indicates the following informations :
RO
Read Only, reading only
RWW
Read/ Write Word, reading writing under the form of double byte (16 bits)
RWL
Read/ Write Long, reading writing under the form of quadruple byte (32 bits)
In the RWL mode and only in that mode, the processor checks that all 4 bytes length parameters are
transmitted under the form of 2 words of 16 bits in the writing sequences.
The reading is not affected by the length of the data.
RS 485
(write)
EEPROM
RAM
Display unit
UC or
application
Reset
Reset
/ Parameter
Reset
/ Parameter
Auto manu
RS 485
(write)
