Flintec DAD 141.1 - Manual (Page 45)

DAD 141.1 Technical Manual, Rev. 2.2 - February 2014 Page 45 of 54
10.9.3. A ’n’ Assign action for setpoint ‘n’ [ Index 0x2068 ]
This command is used to release the external control of the logic outputs: read or setup
Master (PC / SPS) sends Slave (DAD 141.1) responds Meaning
A1 A1:+00000 Output 1 based to gross value
A2 A2:+00002 Output 2 based to peak value
A1_1 OK Output 1 set to base net value
A1 A1:+00001 Output 1 based to net value
Choose the base for the output ‘n’ like follows:
0 - Gross value
1 - Net value
2 - Peak value (Maximum)
3 - Average value
4 - Hold value
5 - Peak to Peak value
6 - Valley value (Minimum)
7 - Error 4 or 5
8 - set output "1" OFF
10.9.4. S
‘n’ Setpoint Value
[ Index 0x206C ]
This command is used to read or setup the 3 setpoints S0, S1 and S2.
Master (PC / SPS) sends Slave (DAD 141.1) responds Meaning
S1 S1:+01500 Request: Setpoint S1 = 1500 d
S1 3000 OK Setup: Setpoint S1 = 3000 d
10.9.5.
H’n’ Setpoint Hysteresis and Switching Action [
Index 0x206A ]
The wished switching logic will be defined by the numeric value and the polarity of the setpoint hysteresis.
The outputs can operate as “normally closed” (negative polarity) or “normally open” (positive polarity).
Examples
Setpoint Hysteresis Switch Logic Weight Output open Output closed
S1 = 2000 kg H1 = 100kg P1 = 1 increasing ≥ 2101 kg 0…2100 kg
S1 = 2000 kg H1 = 100kg P1 = 1 decreasing ≥ 2000 kg 1999…0 kg
S1 = 2000 kg H1 = 100kg P1 = 0 increasing 0…1999 kg ≥ 2000 kg
S1 = 2000 kg H1 = 100kg P1 = 0 decreasing 1900 …0 kg ≥ 1901 kg
Example switch logic P1=1 for setpoint (S1) of 2 000 kg (lines 1 & 2 of table above):
When the weight is increasing between 0 kg a
nd 2100 kg the logic output is “ON”. Once the weight increases
above 2 100 kg then the logic output is “OFF”. The logic output will come “ON” again when the weight value
drops below 2 000 kg.
Example switch logic P1=0 for setpoint (S1) of 2 000 kg (lines 3 & 4 of table above):
When the weight is increasing between 0 kg and 1 999 kg the logic output is “OFF”. Once the weight increases
above 1 999 kg then the logic output is “ON”. The logic output will switch “OFF” again when the weight value
drops below 1 900 kg.
Master (PC / SPS) sends Slave (DAD 141.1) responds Meaning
H1 H1:+00000 Request: hysteresis setpoint S1
H1_100 OK Setup: hysteresis setpoint S1 to 100 d
Allowed hysteresis values are within the range from –9999 to +9999 at a step size of 1.