82 GC250 Technical Manual
EAAM057608EN
No parameter is modifiable. When the user enters “UUU” in P.0000, he is considered “user”
and
can modify only the parameters associated to “user”. If the user enters “III”, he can
modify all parameters associated to “installer” and “user”. When entering “CCC”, the
operator is identified as "manufacturer” and is therefore allowed to modify any parameter
of the controller board.
Example 5:
P.0001=CCC P.0002 =0
P.0003 =0
No passwords are associated to the user and the installer. The parameters associated to
user and installer are free programmable, without entering any code in P.0000. To modify
manufacturer associated parameters you have to enter “CCC” in P.0000.
Example 6:
P.0001=0
P.0002 =III
P.0003 =0
As no password is associated to the user, the parameters associated are freely
programmable, without entering any code in P.0000
. When the user enters “III” in P.0000,
he can modify all parameters because there is no password for “manufacturer”. After
entering this code, all parameters, except for the special ones, can be modified.
Example 7:
P.0001=CCC P.0002 =III
P.0003 =0
As no password is associated to the user, the parameters associated are freely
programmable, without entering any code in P.0000
. When the user enters “III” in P.0000,
he can modify all parameters associated to “installer” and “end user”. When entering “III”
in P.0000, the operator is identified as “manufacturer” and is allowed to modify all
parameters, excluding critical ones.
Example 8:
P.0001=CCC P.0002 =0
P.0003 =UUU
No parameter is modifiable. When the user enters the “UUU” code in P.0000, the controller
considers h
im “user”, but as no password is associated to “installer”, it considers him
“installer”. He is able to modify all parameters associated to the end user and the installer.
When entering “III” in P.0000, the operator is identified as “manufacturer” and is allowed to
modify all parameters, excluding critical ones.
The parameter value can be read, but the modification can be carried out only
if P.0000 contains a proper password. Parameters P.0001, P.0002, P.0003 and
P.0003 are excluded: actually, they are not displayed in case P.0000 does not
contain a proper password.
8.5.1
Password for commands from serial port (USB)
An extra password exists, which is managed through parameter P.0004. Its role is to avoid
that any commands can be sent to the device through communication via USB with modbus
protocol. To send commands via modbus to the device, it is necessary that each command is
preceded by the password contained in P.0004. The default passwo
rd is “123”.
