Table 25 - Control Word
8-15
Reserved
Pumphead Speed Setpoint
The speed setpoint is a 16-bit unsigned integer value that represents the speed of the
pump head in 1/10th of RPM. For example 1205 represents 120.5 RPM.
Set Flow Calibration
This parameter is used to set the flow calibration value from the fieldbus interface. The
value is a 16 bit unsigned integer representing μl per revolution of the pumphead. Note
that this value is only used if bit 5 of the Control Word is enabled.
Cyclic Data Read (from pump to Master)
Table 26 - Cyclic data read (from pump to Master)
16 bit
Byte 1, 2
Status Word
16 bit
Byte 3, 4
Pumphead Measured Speed (unsigned)
16 bit
Byte 5, 6
Hours Run
16 bit
Byte 10,9
No of full motor revolutions
16 bit
Bytes 8,7
Reserved
32 bit
Byte 13, 14, 15, 16
Fluid Level
32 bit
Byte 17, 18, 19, 20
Unassigned
32 bit
Byte 21, 22, 23, 24
Unassigned
32 bit
Byte 25, 26, 27, 28
Unassigned
Table 27 - Status Word
Bit
Description
0
Motor running (1= Running)
1
Global Error Flag (1= Error)
2
Fieldbus Control (1= Enabled)
3
Reserved
4
Over current error
5
Under voltage error
6
Over voltage error
7
Over temperature error
8
Motor stalled
9
Tacho fault
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