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created basic example code and s7util code edit db blocks in a pythonic way #2

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merged 8 commits into from Nov 4, 2013
Merged

created basic example code and s7util code edit db blocks in a pythonic way #2

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9bc9c13
created basic example code and util code edit db blocks
spreeker Oct 30, 2013
1d50955
fixed test code of s7utils
spreeker Oct 31, 2013
18bb155
reading dword and real values of plc is fixed
spreeker Oct 31, 2013
2f077a8
better prints..
spreeker Nov 1, 2013
3f708f2
fix destroy error and error message
spreeker Nov 3, 2013
3795e01
fix callback issue
spreeker Nov 3, 2013
5cf3a7a
added partner module
spreeker Nov 3, 2013
bc54497
switched to new error function
spreeker Nov 3, 2013
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3 changes: 3 additions & 0 deletions README.rst
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Expand Up @@ -38,3 +38,6 @@ credits
Stephan Preeker
Gijs Molenaar

Davide Nardella for creating snap7
thank Thomas Hergenhahn for his libnodave.
thanks to Thomas W for his S7comm wireshark plugin
184 changes: 116 additions & 68 deletions example/db_layouts.py
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@@ -1,77 +1,125 @@
"""
0 Start_of_PT
2.0 Number_of_PTS
Define DB blocks used.
"""

db_1_layout = """

4 RC_IF_ID INT
6 RC_IF_NAME STRING[16]

24.0 LockAct BOOL
24.1 GrpErr BOOL
24.2 RuyToStart BOOL
24.3 RdyToReset BOOL
24.4 LocalAct BOOL
24.5 AutAct BOOL
24.6 ManAct BOOL
24.7 OoSAct BOOL

25.0 FbkOpenOut BOOL
25.1 FbkCloseOut BOOL
25.2 FbkRunOut BOOL

26 PV_LiUnit INT
28 PV_Li REAL

32.0 PV_Out BOOL
32.1 FlutAct BOOL
32.2 Bad BOOL

34.0 ScaleOut.High REAL
38.0 ScaleOut.Low REAL

42.0 OpenAut BOOL
42.1 CloseAut BOOL
42.2 StartAut BOOL
42.3 StopAut BOOL
42.4 ModLiOp BOOL
42.5 AutModLi BOOL
42.6 ManModLi BOOL
42.7 RstLi BOOL
43.0 BoolValue BOOL
43.1 Occupied BOOL
44 SP_Ext REAL
48 RealValue REAL
52 BatchID DWORD
56 StepNo DWORD
60 IntValue INT
62 StringValue STRING[32]
96 BatchName STRING[32]
"""
Below data comes from the dataview of DB1
and shows the index of the first row of data
the first 4 bytes are used for DB info

db1_specification = OrderedDict()
start of a DB:

for line in db_1_layout.split('\n'):
row = line.split()
if row:
index, var_name, _type = row
index = index - 4 # correction, because DB bytes 0,1,2,3 are used.
0 Start_of_PT 0
2.0 Number_of_PTS 450

db1_specification[var_name] = (index, _type)


class DBObject(object):

def __init__(self, _bytearray, _specification):

self._bytearray = _bytearray
self._specification = _specification

def __get_item__(self, key):
"""
Get a specific db field
"""
pass
"""

rc_if_db_1_layout = """

4 RC_IF_ID INT
6 RC_IF_NAME STRING[16]

24.0 LockAct BOOL # interlocked or not
24.1 GrpErr BOOL # indicate error
24.2 RuyToStart BOOL
24.3 RdyToReset BOOL
24.4 LocalAct BOOL
24.5 AutAct BOOL # automatic operation
24.6 ManAct BOOL # manual opration
24.7 OoSAct BOOL # Out of service

25.0 FbkOpenOut BOOL # feedback open
25.1 FbkCloseOut BOOL # feedback closed
25.2 FbkRunOut BOOL # feedback running (pump)

26 PV_LiUnit INT
28 PV_Li REAL

32.0 PV_Out BOOL
32.1 FlutAct BOOL
32.2 Bad BOOL

34 ScaleOut.High REAL
38 ScaleOut.Low REAL

# control fields

42.0 OpenAut BOOL # open / close
42.1 CloseAut BOOL # open / close
42.2 StartAut BOOL
42.3 StopAut BOOL
42.4 ModLiOp BOOL # enable manual
42.5 AutModLi BOOL # enable automatic control
42.6 ManModLi BOOL # enable manual
42.7 RstLi BOOL
43.0 BoolValue BOOL
43.1 Occupied BOOL # used by route

44 SP_Ext REAL
48 RealValue REAL
52 BatchID DWORD # navision order number
56 StepNo DWORD # step ?
60 IntValue INT
62 StringValue STRING[32]
96 BatchName STRING[32] # product name / apprears on screen
"""

tank_rc_if_db_layout = """

0 RC_IF_ID INT
2 RC_IF_NAME STRING[16]
20 BatchName STRING[32]
54 BatchID DWORD
58.0 Occupied BOOL # Bezet door Koole PA
60 Status INT # Status
62 SubStatus INT # Substatus
64 Opdrachtstatus INT # Opdrachtstatus (zie enum)
66 Tankstatus INT # Tankstatus (zie enum)
68.0 RC_IF_ERR BOOL # Module Fout
68.1 QOk BOOL # Module OK Module specifieke parameters
68.2 Unlock BOOL
70 Cmd INT # Commando
72 T_Uit REAL # Uitschakeltijd
76 Massa REAL # Massa product in tank
80 MaxMassa REAL # Maximale capaciteit van tank
84 T_Aflever REAL # Aflevertemperatuur
88 T_Max REAL # Maximale product temperatuur
92 T_HH REAL # Hoog Hoog alarm product temperatuur
96 T_LL REAL # Laag Laag alarm product temperatuur
100 T_Schakel REAL # Schakeltemperatuur productverwarming
104 T_Warmwater REAL # Maximale watertemperatuur verwarming
108 SG REAL # Soortelijk gewicht bij temperatuur SG_T
112 SG_T REAL # Soortelijk gewicht temperatuur
116 SG_DT REAL # Soortelijk gewicht delta T
120 SG_R INT # Soortelijk gewicht rekenmethodiek
122 Temp REAL # Temperatuur
126.0 Temp_MAX BOOL # Tmperatuur boven de maximale producttemperatuur
126.1 Temp_H BOOL # Temperatuur te hoog
126.2 Temp_L BOOL # Temperatuur te laag
126.3 Temp_BA BOOL # Temperatuur boven aflevertemperatuur
126.4 Temp_OS BOOL # Temperatuur onder schakeltemperatuur
126.5 Niveau_H BOOL # Tankniveau hoog
126.6 Niveau_HH BOOL # Tankniveau te hoog
126.7 Niveau_HH_LS BOOL # Tankniveau te hoog (Level Switch)
127.0 Bodemdruk_H BOOL # Bodemdruk hoog
127.1 Topdruk_HH BOOL # Topdruk te hoog
127.2 Niveau_L BOOL # Tankniveau laag
127.3 Niveau_LL BOOL # Tankniveau te laag
127.4 Inslag_Geblokkeerd BOOL # Automatische inslag geblokkeerd
127.5 Uitslag_Geblokkeerd BOOL # Automatische uitslag geblokkeerd
127.6 Reload BOOL # Herlaad productgegevens via de database
127.7 Stikstof BOOL # Stikstofdeken gewenst
128.0 Verwarming BOOL # Productverwarming gewenst
128.1 StatusStikstof BOOL # Stikstofdeken status
128.2 StatusVerwarming BOOL # Productverwarming status
130 Productnaam STRING[52] # Productnaam
184 Productcode STRING[20] # Productcode
206 VP_T_Max REAL # Maximale temperatuur
210 VP_T_Min REAL # Minimale temperatuur
214 VP_T_Gem REAL # Gemiddelde temperatuur
218 VP_Massa REAL # Totale massa verpompt
222 VP_Duur REAL # Tijdsduur verpomping
226 T1_N REAL # Aantal metingen
230 T1_MassaBegin REAL # Massa aan begin van de meting
234 T1_MassaEind REAL # Massa aan het eind van de meting
"""
63 changes: 0 additions & 63 deletions example/db_util.py
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