Burkert 8756 Batch Operating Instructions Manual page 41

Type 8756 Batch
Configuration with Bürkert
Communicator
PDO number Meaning
1 Start dosing
Tab. 9: Cyclic data received
PDO number Meaning
1 Last dose time
Refer to
2 Dosing status
Refer to
Dosing information
Refer to
Quantity last dose (in kg)
Refer to
3 NAMUR status
Refer to
Error ID
Refer to
Medium temperature (in K)
Tab. 10: Cyclic data transmitted
The transmission speed of the PDOs can be changed. Refer to
8.3.3.1 PDO1, Last dose time
The value of PDO1 is the sum of the valve opening time and the device balancing time. The balancing time
is the time that is needed by the device to detect when the mass flow rate is equal to zero.
8.3.3.2 PDO2, Dosing status
Bit Designation
0 Init
1 Ready
2 Dosing in progress
3 Ready with initial activation
time
4 In progress with initial activa-
tion time
PDO1, Last dose time [} 41]
PDO2, Dosing status [} 41]
PDO2, Dosing information [} 42]
PDO2, Quantity last dose [} 42]
Status indicator [} 14]
PDO3, Error ID [} 42]
Meaning
The device is being initialized.
The device is ready to dose and is waiting for the command to
start a dose.
The device is dosing.
The device is ready to dose and is waiting for the command to
start a dose. To perform the first dosing, the device uses the
initial activation time.
The device is dosing and uses the initial activation time.
Transmission speeds of cyclic data [} 47]
41