
Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
197
A.9.4.4
Inputs and outputs
General channel 2 settings
Table A- 48 General channel 2 settings
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8801
Unsigned / 2 Operation mode Operation mode.
0
•
0: Off
•
1: Current output
•
2: Frequency output
•
3: Pulse output
•
4: Signal output
Read /
write
7420
Unsigned / 2 Active/passive
operation
Shows application
possibilities.
-
•
0: Active operation
not possible, use
passive wiring!
•
1: Active operation
possible, hardware is
able to drive the cur-
rent loop.
Read
only
9590
Unsigned / 2 Fail-safe activa-
tion condition
Fail-safe activation
condition.
1
•
0: Bad status of se-
lected process value
•
1: Active Mainte-
nance alarm or Fail-
ure (NAMUR)
Read /
write
8981
Unsigned / 2 Fail-safe min.
time
Minimum time the
output stays in fail-safe
behavior.
0
[s]
0 - 100
Read /
write
Содержание SITRANS F Series
Страница 2: ......
Страница 360: ...Index SITRANS F Ultrasonic flowmeters FST030 Modbus 358 Operating Instructions 08 2017 A5E37367739 AC ...
Страница 361: ......