Watson-Marlow MC100 - Manual (Page 7)

Users Manual
MC100
MC100 Users Manual Profibus DP - rev 4 Rev. 4 Page 7 of 40
In parallel mode a virtual pump (pump no. 0) is be used to hold common
parameters for all the enabled pumps. However, the pumps will still have to
be calibrated individually.
Serial mode: This mode requires that all enabled pump are of the same type, i.e. all
PD12; all PD22 or all GD30.
Different pump type can be connected to the MC 100, but only pumps of
the same type can be enabled and operated together in parallel mode.
All pump data, except tube sizes, are stored in the virtual pump (pump no.
0).
The filling volume is divided to the pumps based on the tube sizes.
Calibration for all the pumps is done by calibrating the virtual pump 0.
2.4 How to operate the dispenser pumps
Before a new filling is started the parameters for this filling is loaded to the pumps from the filling
system.
The data are loaded to the pumps either individually or as common data depending on the operating
mode – please see above.
Initially the pumps need to be primed – i.e. the product has to be filled into the tubes and nozzles of the
filling system.
Hereafter the pumps must be calibrated.
For details of priming and calibrating please see the manual for the pumps attached.
During production a regularly re-calibration may be necessary – e.g. for each 1.000 filling depending on
the product to be filled. This can be done “on the fly”.
For details on how to send and receive data from the MC100 please see section 7.
2.5 Communication on the Profibus
The communication between the MC100 and the PLC system for the filling line runs continuously.
Changes in status of the pumps and commands to the MC100 and attached pumps are communicated
when required.
To send new data to the MC100 and the attached pumps the data are sent using a 23 data words
telegram. The details of this telegram are described in section 7.