Siemens SITRANS F Series, Operating Instructions Manual, Page: 297 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
295
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[unit]
(unit register)
Value range /
Setting options
Access
level
6623 Unsigned / 2 State Alarm state of the entry
specified by Entry
number.
-
• 0: Event is reset
(going).
•
1: Event is set (com-
ing).
• 2: Alarm is acknowl-
edged.
Read
only
6624 Unsigned / 2 Alarm ID Alarm ID of the entry
specified by Entry
number. See Alarm
items (Page 295).
65335 specifies an
empty entry that can
be ignored.
- - Read
only
6625 Unsigned / 2 Alarm class Alarm class of the
entry specified by Entry
number. See Alarm
items (Page 295).
65335 specifies an
empty entry that can
be ignored.
-
• 1: Process value
alarm (PA)
•
2: Process value
warning (PW)
• 4: Maintenance alarm
(MA)
•
8: Maintenance warn-
ing (MW)
• 16: Maintenance
required (MR)
•
32: Function check
(FC)
Read
only
6638 Unsigned / 2 Available en-
tries
Current number of
available diagnostic log
entries.
- - Read
only
6601 Unsigned / 2 Reset log Command to clear the
alarm history log.
-
• 0: Cancel
•
1: Clear log
Write
only
A.9.6.3 Alarm items
Table A- 94 Alarm items
Group Bit Alarm ID Restrictions Associated alarm
class
Alarm items 1
(Sensor alarm 1)
0 Sensor startup 0
1 Safety critical user parameters not vali-
dated
1
2 Safety critical factory parameters not
validated
2