Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 236 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
234
Operating Instructions, 08/2017, A5E37367739-AC
Channel 3 status output settings (relay)
Table A- 57 Channel 3 status output settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
9141 Unsigned / 2 Status mode Select the functionality
for the status output.
0
• 0: Alarm class
•
1: Alarm item
Read /
write
9158 Unsigned / 2 Alarm class Bit encoded selection
of alarm classes which
impact the status out-
put. Each diagnostic
event is allocated to an
alarm class. See Alarm
items (Page 295).
Applicable if Status
mode = 0.
0
•
Bit 0: Process value
alarm (PA)
•
Bit 1: Process value
warning (PW)
•
Bit 2: Maintenance
alarm (MA)
•
Bit 3: Maintenance
warning (MW)
•
Bit 4: Maintenance
required (MR)
•
Bit 5: Function check
(FC)
Read /
write
9199 Unsigned / 2 NAMUR status
signals
Bit encoded selection
of NAMUR status sig-
nals which impacts the
status output.
Applicable if Status
mode = 0. NAMUR
status is derived from
Alarm class (9158).
0
•
Bit 0: Out of specifi-
cation (PA, PW)
• Bit 1: Failure (MA)
•
Bit 2: Maintenance
required (MR, MD)
• Bit 3: Function check
(FC)
Read /
write
9142 Unsigned / 4 Alarm items 1 Bit encoded selection
of alarm items that
impact the output.
Mainly sensor alarms.
See Alarm items
(Page 295). Applicable
if Status mode = 1.
0 Read /
write
9144 Unsigned / 4 Alarm items 2 Bit encoded selection
of alarm items that
impact the output.
Mainly sensor alarms.
See Alarm items
(Page 295). Applicable
if Status mode = 1.
0 Read /
write