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W
EIGHING
F
UNCTIONS AND
P
ARAMETERS
5.6.7
DR 7 - S7-FB-Life Bit Monitoring Time
The SIWAREX FTC can determine whether the FB is maintaining the
communication with the SIMATIC CPU by monitoring the life bit. If the FB does not
respond, an operating error is output after the defined time has elapsed. Monitoring
is active in RUN status of the SIMATIC_CPU.
5.6.8
DR 7 – Input Value for the Adjustment Zero (0 or 4 mA)
A weight for the range start can be defined when defining the range parameters for
the analogue output.
5.6.9
DR 7 - Input Value for the End Value (20 mA)
When defining the parameters for the range for the analog output, a weight can be
defined for the range end.
5.6.10 DR 7 - Replacement Value for the Analog Output with OD
A weight can be defined for the analogue output, for which a corresponding signal
is output if the OD signal (Output Disable) exists.
Normally this corresponds with the SIMATIC CPU status - STOP.
5.6.11 DR 7 - Source for the Analog Output
The source for the analogue output can be defined with this parameter. The weight
values from the defined source are output as current signals corresponding with
the parameter definitions for start and end ranges.
The following sources are available:
0 - Control value form the SIMATIC (FB)
1 - Default value from the DR 17
2 - Gross weight
3 - Net weight
4 - Belt speed
5 - Flow rate 1
6 - Belt load
7 - Actuation signal from PID controller
5.6.12 DR 7 - Current Range for the Analog Output
The analog output can be operated with a current range 0... 20 mA or 4... 20 mA.
SIWAREX FTC
5-63
Содержание SIWAREX FTC
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