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