Key Protection; Key Protect Function - Omron E5ZN Operation Manual

Key Protection

4-8

Key Protection

4-8-1

Key Protect Function

Communications
Writing
Operation/Adjustment
Protection
Initial Setting/
Communications
Protection
52
The protect function limits the settings that can be changed to prevent inad-
vertently changing settings.
There are three protect mechanisms: "Communications writing" prohibits set-
ting changes from host communications, while "operation/adjustment protec-
tion" and "initial setting/communications protection" limit settings from the
E5ZN-SDL Setting Display Unit.
If the 'communications writing" parameter is set to "0: Prohibited (off),"
changes to parameters other than "communications writing" are prohibited
from host communications.
Default is "1: Not prohibited (on)."
The following table shows the relationship between set values and the range
of protection.
Level
Operation PV
level
PV/SP
Other
Adjustment level
u : Can be displayed and changed
m : Can be displayed
´ :
Cannot be displayed and moving to other levels not possible
• When this parameter is set to 0, parameters are not protected.
• Default is 0.
This protect level restricts movement to the initial setting level, communica-
tions setting level, and advanced function setting level.
Set value Initial setting level
m
0
m
1
´
2
m : Moving to otherlevels possible
´ :
Moving to other levels not possible
Default is 0.
oapt
0
0u
Set value
0 1
m m
u u
u u
u ´
icpt
0
0u
Communications
setting level
m
m
´
Section 4-8
2 3
m m
u m
´ ´
´ ´
Advanced function
setting level
m
´
´