Watson-Marlow MM420 - Manual (Page 139)

Issue 10/06 3 Functions
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0 139
3.12.4 Manual / automatic operation
Parameter range: P0719, P0810
Warnings -
Faults -
Function chart number: -
It is necessary to change-over from the automatic mode into the manual mode to
load and unload production machines and to feed new materials (e.g. batch
processing). The machine operator carries-out the preparatory activities for
subsequent automatic operation in the manual mode. In the manual mode, the
machine operator locally controls the machine (enters the ON/OFF command as
well as also the setpoint). A changeover is only made into the automatic mode after
the set-up has been completed. In the automatic mode, the control (open-loop) of
the machines and production processes are handled by a higher-level control
system (e.g. PLC). This operation is maintained until it is necessary to again load
and unload the machine or feed new material into the machine or production
process.
For MICROMASTER 420, indexed parameter P0719 and BICO parameter P0810
are used to change over between the manual and automatic mode. The command
and setpoint sources are defined using P0719 (refer to Table 3-28), whereby
P0719 index 0 (P0719[0]) defines the automatic mode and P0719 index 1
(P0719[1]) the manual mode. BICO parameter P0810 is used to change-over
between the automatic and manual modes. P0810 can be controlled from any
control sources (refer to Table 3-27).
BOP
BOP
Setpoint
channel
Motor
control
Sequence control
MOP
ADC
FF
0
1
P0700
Terminals
P1000
USS
CB
Co
m
m
and
s
ourc
e
Setpoin
t s
our
ce
P0719[0] = 00
P0719[1] = 11
Cmd
Remote
Cmd
Local
0
1
P0719[0] = 00
P0719[1] = 11
Setpoint
Remote
Setpoint
Local
P0810 P0810
Fig. 3-57 Changing-over using the BICO parameter P0810
Table 3-27 Examples for the parameter settings of P0810
Parameter setting Command source
P0810 = 722.2 requires P0703 = 99 Digital input 3
P0810 = 2032.15 USS at the BOP link
P0810 = 2036.15 USS at the COM link
P0810 = 2090.15 CB at the COM link