Burkert Type 8717 - Manual (Page 71)

71
Starting up the Modbus
register
address in
mfc number of
registers Designation / Description r/w format
0005 1 Actuator Override
defines the behavior of the set-point setting
0 normal mode of the controller and binary input controls the
valve
1 off / closed
2 on / open, the flow rate is restricted by the pressure and the
orifice of the valve
3 correcting variable to the valve is frozen
64 correcting variable to the valve is controlled by the value
of the set-point value. The min. and max. ramp up and down
times (ramps, etc.) apply.
Read only
65 similar to 64, however percentage of the correcting
variable only within the working area of the valve
66 Calibration mode active
67 Autotune mode active
68 Safety mode active
R/W UINT8
0006 1 ModeMFC
Activation of the Autotune function.
The controller must be in normal mode (modeMFC = 0)
Autotune can be activated by writing a value of 2.
R/W UINT8
0007 1 Modbus device Address
device address / Bus address
Address which the Modbus master uses to communicate with
the device.
Min. value 1, max. value 32
R/W UINT8
0008…0009 2 Set-point as float
Set-point as float (4 byte)
Value in the calibrated device unit,
see input register → “data Unit” R/W FLOAT32
0010 1 Timeout detection Time (In Second)
Timeout detection is implemented in the MFC device. The
detection time can be specified by this register. The default
value is 60 (seconds)
If the time between two pollings is longer than the specified
time, a timeout will be detected. After timeout detection the
device will be set into a safety mode. In this case the set
point will be set to 0 and the valve will be closed. The timeout
detection can be disabled by a value of 0.
Range: 0 – 60
Attention please:
This value will be stored non volatile from firmware
version A.00.96.
R/W UINT16
english
MFC Family