Warning And Alarm Limits - Siemens SITRANS P DS III Operating Instructions Manual

Blocks can also be combined:
Table 7- 8
Lock
On
Off
Off
Off
Off
See also
Locking of buttons and functions (Page 81)
7.7

Warning and alarm limits

The analog input function blocks each have high and low warning and alarm limits for the
output. In order to avoid unstable display of warnings and alarms, specify a hysteresis.
In the analog input function blocks, set the following parameters according to process
requirements:
● Limit value hysteresis
● High warning limit
● High alarm limit
● Low warning limit
● Low alarm limit
Status
If limits are violated, the output is accompanied by a status which you can evaluate in your
application program:
Table 7- 9
Status
Display
G_137
G_138
G_141
G_142
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08
Combined blocks
Write block for parameter chang-
es over the bus
On or off
Off
Off
On
On
Limits and status displays
Status Violation
Hex
89 Low warning limit
8A High warning limit
8D Low alarm limit
8E High alarm limit
Operator control functions via PROFIBUS
7.7 Warning and alarm limits
Release of local operation
over SIMATIC PDM
Released or blocked
Blocked
Released
Blocked
Released
Display
L
LA
- -
LL
LC
117