Siemens SITRANS FST030 - Page 233

Channel 3 status output settings (relay)
Table A-58 Channel 3 status output settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
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 293).
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 sta‐
tus is derived from
Alarm class (9158).
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
9142 Unsigned / 4 Alarm items 1 Bit encoded selection
of alarm items that im‐
pact the output. Mainly
sensor alarms.
See Alarm items
(Page 293). Applicable
if Status mode = 1.
0 Read /
write
9144 Unsigned / 4 Alarm items 2 Bit encoded selection
of alarm items that im‐
pact the output. Mainly
sensor alarms.
See Alarm items
(Page 293). Applicable
if Status mode = 1.
0 Read /
write
9148 Unsigned / 4 Alarm items 4 Bit encoded selection
of alarm items that im‐
pact the output.
See Alarm items
(Page 293). Applicable
if Status mode = 1.
0 Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD 233