See following pages for detailed description and other data records.
Transmitted data Byte Received data
Bit 0: Start / stop Bit 1: Abort
Bit 2: Operation via Profibus DP Bit 3: n.u.
Bit 4: n.u. Bit 5: n.u.
Bit 6 Discharge / end batch
Bit 7: Acknowledge "New values ready / final value reached"
0 Bit 0: Operation Bit 1:
Bit 2: Ready for feeding Bit 3: Fast flow
Bit 4: Dribble feed Bit 5: Discharge active Bit 6: Discharge completed
Bit 7: New values ready / final value
reached
Bit 0: Acknowledge start / stop signal Bit 1: Acknowledge abort signal Bits 2…7: n.u.
1 Bit 0: Start / stop signal (undertaken locally) Bit 1: Abort signal (undertaken locally) Bits 2…7: n.u.
Bits 0…7: n.u. 2 Bits 0…7: n.u.
Bit 0: Control signals valid Bit 1: Local mode
Bit 2: n.u. Bit 3: n.u. Bit 4: n.u.
Bit 5: Clear alarm
Bit 6: Modification to transmitted data record Bit 7: Acknowledge "Modification to
received data record"
3 Bit 0: DI 0.0 Bit 1: DI 0.1 Bit 2: DI 0.2
Bit 3: Remote control via Profibus DP Bit 4: Incorrect nominal value
Bit 5: Common alarm
Bit 6: Acknowledge "Modification to transmitted data record"
Bit 7: Modification to received data record No. of transmitted data record = 128 4 No. of transmitted data record = 128 Index of transmitted data record = X 5 Index of transmitted data record = X No. of received data record = 1 6 No. of received data record = 1 Index of received data record = X 7 Index of received data record = X
Nominal weight in kg / DIV (0…150 000) 8 Component weight in kg / DIV (0…999 999) 9 10 11
n.u. 12 Scale weight in kg / DIV (0…999 999)
n.u. 13 n.u. 14 n.u. 15 n.u. 16 n.u. n.u. 17 n.u. n.u. 18 n.u. n.u. 19 n.u.
n.u. 20 Number of decimal places (0…3)
Recipe number (load recipe) (0…8) 21 Recipe number (current recipe) (1…8)
n.u. 22 Step number (0…8)
Profibus-DP Protocol Dosing control system (DCOS) 73
14.2 Control bits (transmitted data bytes 0…3)
Byte Bit Name Description
0 Start / stop 1 = Release (start feeding)
0 = Stop (immediate stop / interruption of feeding). 1 Abort 1 = Current weighing is aborted.
2 Operation via Profibus DP
1 = The start / stop and the abort signals are transmitted by the Profibus.
0 = The start / stop and the abort keys are locally active. The start / stop and the abort signals are also switched to the
24 V inputs if the flag "Control signals valid", byte 3 bit 0, is not present.
3…5 n.u. n.u.
6 Discharge / end batch
1 = Discharge is active. If the scale is empty, "Discharge completed" is set.
The system switches to its original position, the current component weighing process is completed
(TCON.MODE = POS / POS2). 0 = Stop discharge.
0
7 Acknowledge "New values ready / final value reached"
1 = Delete status bit "New values ready / final value reached" (leave until "New values ready" = 0).
0 Acknowledge start / stop signal
1 = Status bit for start / stop signal is cleared.
1 Acknowledge abort signal
1 = Status bit for abort signal is cleared. 1
2…7 n.u. 2 0…7 n.u.
3 0…7 See "Data for all devices"
74 Dosing control system (DCOS) Profibus-DP Protocol
14.3 Status bits (received data bytes 0…3)
Byte Bit Name Description
0 Operation 1 = The scale is on. 0 = The scale is off.
1 n.u. n.u.
2 Ready for feeding 1 = All feeding conditions are in place. 3 Fast flow 1 = Fast flow element is active. 4 Dribble feed 1 = Dribble feed element is active.
5 Discharge active 1 = Discharge is active, is set via the control flag "Discharge" or the 24 V input.
6 Discharge completed
1 = Discharge has been successfully completed. 0 = If control bit "Discharge" or after feeding start. 0
7 New values ready / final value reached
1 = New values are available (component weight).
0 = Control bit "Acknowledge new values ready / final value reached" = 1.
0 Start / stop signal 1 = Local start / stop key was pressed. Is in place until cleared by the corresponding control flag.
1 Abort signal 1 = Local abort key was pressed. Is in place until cleared by the corresponding control flag.
1
2…7 n.u. 2 0…7 n.u.
3 0…7 See "Data for all devices"
Profibus-DP Protocol Dosing control system (DCOS) 75
14.4 Transmitted data records (transmitted data bytes 8…23)
Transmitted data record 128 (default nominal values) Byte Name Range [unit] Description
8…11 Nominal weight 0 / TCON.MINW… TCON.MAXW [kg]
2) 3)
Nominal value for the component weight.
If the value is 0 it will not be accepted. This can be used for instance, if the recipe must be loaded with the nominal weight.
12…20 n.u.
21 Recipe number 0…8 3) 1…8 = Load recipe / silo. 0 = Do not load recipe / silo. 22…23 n.u.
2) Decimal places according to DIV / PBDP.WFOR setting (default no decimal places / fixed format). 3) Nominal value is only accepted in step 1 or 8
Transmitted data record 136 (recipe) Index: 1…8 as recipe number Byte Name Range [unit] Description
8…9 Free silo number 3) Free silo number, which appears among other things on the printout (REC.BIN).
10…13 Nominal weight in kg
MINW…MAXW 2) 3)
Nominal weight (REC.WTS).
14…15 Weight tolerance positive
2) 3) Weight tolerance positive in kg (REC.TOL+).
16…17 Weight tolerance negative
2) 3) Weight tolerance negative in kg (REC.TOL–).
18…19 Fast flow trigger value
change-over weight
2) 3) Fast flow trigger value
change-over weight in kg (REC.STRT). 0 = No fast flow.
20…21 Dribble flow cut- off weight
2) 3) Dribble flow cut-off weight in kg (REC.CUTW).
22 Fast flow rate 3) Fast flow rate in % (REC.FFLO). 23 Dribble flow rate 3) Dribble feed rate in % (REC.DFLO).
2) Decimal places according to DIV / PBDP.WFOR setting (default no decimal places / fixed format). 3) Nominal value is only accepted in step 1 or 8
Unlike most Bühler scales with Profibus connection, the recipe loaded last is edited in the case of DCOS with index 0. However, if another index is selected then this recipe is loaded.
76 Dosing control system (DCOS) Profibus-DP Protocol
14.5 Received data records (received data bytes 8…23)
Received data record 1 (default actual values) Byte Name Range [unit] Description
8…11 Component weight
0…999 999 [kg] 2) Current component weight.
12…15 Scale weight 0…999 999 [kg] 2) Current scale weight.
16…19 n.u. n.u. n.u.
20 Decimal places 0…3 Number of decimal places DIV on the Profibus interface according to the setting PBDP.WFOR and ADC.DIV. 21 Recipe number 1…8 Currently loaded recipe.
22 Step number 0…9 In accordance with operating instructions 66698-2-2. 23 Alarm number 0…99 In accordance with operating instructions 66698-2-2. 2) Decimal places according to DIV / PBDP.WFOR setting (default no decimal places / fixed format).
Received data record 128 (default nominal values)
For data contents, see transmitted data record 128.
Received data record 136 (recipe) Index: 0…8 as recipe number (0 = working recipe)
For data contents, see transmitted data record 136.
Received data record 13, index = 0 (Job data/calibration memory) Byte Name Range [unit] Description
8…11 ID number For details, see "Received data record 13 job data / calibration memory" chapter
12…15 Component weight
0…999 999 999 [DIV]
Saved component weight of last job with resolution DIV.
16…19 n.u. 20…23 n.u.
Received data record 13, index = 1
8…13 Date + time For details, see "Received data record 13 job data / calibration memory" chapter
14…15 n.u. 16…19 n.u. 20…23 n.u.
Profibus-DP Protocol Device control unit (DEVICE) 77