Modbus holding registers
A.3 Modbus holding registers tables
FC410 with Modbus
Operating Instructions, 02/2016, A5E33120874-AC
131
Modbus
address
Data type /
Size [bytes]
Parameter
Description
Default value
[unit]
Value range Access
level
2138
Float / 4
Standard Deviation
Limit
Set limit for zero point ad-
justment Standard Deviation
value. If the Standard De-
viation exceeds the
Standard Deviation Limit,
the auto zero point adjust-
ment is aborted.
Sensor size
specific [kg/s]
1)
0 to +1023 Read /
Write
2140
Float / 4
Zero Point Offsett
Limit
Set limit for zero point off-
set.
If the zero point offset
exceeds the zero point
offset limit, the zero point
offset cannot be stored
Sensor size
specific [kg/s]
1)
-1023 to
+1023
Read /
Write
2142
Float / 4
Zero Point Offset
Value
Default zero point offset
based on factory calibration
of sensor.
A Zero point offset compen-
sates for sensor variations
due to process conditions.
0 [kg/s]
-1023 to
+1023
Read only
2144
Unsigned /
2
Zero Point Adjust
Progress
Shows the progress of the
currently running Zero Point
adjustment in percentage
0 [%]
0 to 100
Read Only
2145
Unsigned /
2
Zero Point Adjust
Status
Status of the last zero point
adjustment performed
Every high bit ('1')
represents an error
occurred in the last zero
point adjustment performed.
No high bits equals ok.
Bit 0 = Zero sigma limit
exceeded
Bit 1 = Zero offset limit
exceeded
Bit 2 = Quality of zero point
conditions
-
•
1
•
2
•
4
Read Only
2180
Unsigned /
2
Start Zero Point
Adjustment
Start automatic zero point
adjustment.
The automatic zero point
adjustment determines the
application specific zero
point offset automatically.
Possible selections:
•
0: Idle
•
1: Running
•
2: Start
0
0 to 2
Read /
Write
1)
: See Sensor dimension dependent default settings (Page 139)