KROHNE CORIMASS G-MFM 4085 EN - Manual (Page 61)

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5.9 Setting the control input (Binary)
The MFC 085 has an input connection which allows certain meter functions to be controlled
remotely. These functions are:
- Reset totaliser
- Standby
- Acknowledge status message
- Start zero calibration
The function will be triggered when the input becomes active. For standby the converter will be
held in standby for as long as the input is active. The other functions are triggered on the
transition of the input from inactive to active. The active level of the input may be defined using
Fct. 3.6.2. as active high (4 - 24 volts) or active low (0 - 2 volts).
NOTE:
Internal resistors attached to the control input pull it low, 0V, when the input is not driven. (see
figure below)
Example:
Using a TTL signal to reset the totaliser when the signal goes from high (+5V) to low (0V).
Begin from measuring mode
Key Display
line 1
line 2
→↑↑
Fct. (3).0 INSTALL
→
5x
↑
Fct. 3.6.0 CTRL.INP.E
→
Fct. 3.6.(1) FUNCTION E
→
(OFF)
↑
(STANDBY)
: (ZERO SET)
↑
(RESET MASS)
↵
Fct. 3.6.(1) FUNCTION E
↑
Fct. 3.6.(2) ACTIV.LEVEL
→
(ACTIVE.HIGH)
↑
(ACTIVE. LOW)
↵
Fct. 3.6.(2) ACTIV.LEVEL
4x
↵