Siemens SITRANS F Coriolis FCT030 Function Manual page 90

MODBUS commands
4.10 Modbus holding registers tables
Modbus Data type /
register Size in bytes
7421 Float / 4
7151 Float / 4
Channel 2 status output settings
Table 4-34 Channel 2 status output settings
Modbus Data type /
register Size in bytes
8841 Unsigned / 2
8858 Unsigned / 2
8899 Unsigned / 2
8842 Unsigned / 4
90
Parameter Description
Fail-safe value Output value in case of
a fault and when Fail-
safe behavior (8939) is
configured to 4.
Forced value Forced value when
forcing is active.
Parameter Description
Status mode Select the functionality
for the status output.
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 145).
Applicable if Status
mode = 0.
NAMUR status Bit encoded selection
signals of NAMUR status sig‐
nals which impacts the
status output.
Applicable if Status
mode = 0. NAMUR sta‐
tus is derived from
Alarm class (8858).
Alarm items 1 Bit encoded selection
of alarm items that im‐
pact the output. Mainly
sensor alarms. See
Alarm items
(Page 145). Applicable
if Status mode = 1.
Default value Value range /
[units] Setting options
(units register)
0.0 0.0 - 12500.0
[pulses/s]
1.0 0.0 - 12500.0
[pulses/s]
Default value Value range /
[units] Setting options
(units register)
0
● 0: Alarm class
● 1: Alarm item
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)
0
● Bit 0: Out of
specification (PA,
PW)
● Bit 1: Failure (MA)
● Bit 2: Maintenance
required (MR, MD)
● Bit 3: Function check
(FC)
0
FCT030 Modbus (From firmware 4.0)
Function Manual, 06/2018, A5E39931813-AB
Access
level
Read /
write
Read /
write
Access
level
Read /
write
Read /
write
Read /
write
Read /
write