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June 2, 2019 20:10
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Python and S7 1200 Siemens
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| # | |
| # | |
| import snap7.client | |
| from snap7.snap7types import * | |
| from snap7.util import * | |
| class DBObject(object): | |
| pass | |
| offsets = { "Bool":2,"Int": 2,"Real":4,"DInt":6,"String":256} | |
| db=\ | |
| """ | |
| Temperature Real 0.0 | |
| Cold Bool 4.0 | |
| RPis_to_Buy Int 6.0 | |
| Db_test_String String 8.0 | |
| """ | |
| def DBRead(plc,db_num,length,dbitems): | |
| data = plc.read_area(areas['DB'],db_num,0,length) | |
| obj = DBObject() | |
| for item in dbitems: | |
| value = None | |
| offset = int(item['bytebit'].split('.')[0]) | |
| if item['datatype']=='Real': | |
| value = get_real(data,offset) | |
| if item['datatype']=='Bool': | |
| bit =int(item['bytebit'].split('.')[1]) | |
| value = get_bool(data,offset,bit) | |
| if item['datatype']=='Int': | |
| value = get_int(data, offset) | |
| if item['datatype']=='String': | |
| value = get_string(data, offset) | |
| obj.__setattr__(item['name'], value) | |
| return obj | |
| def get_db_size(array,bytekey,datatypekey): | |
| seq,length = [x[bytekey] for x in array],[x[datatypekey] for x in array] | |
| idx = seq.index(max(seq)) | |
| lastByte = int(max(seq).split('.')[0])+(offsets[length[idx]]) | |
| return lastByte | |
| if __name__ == "__main__": | |
| plc = snap7.client.Client() | |
| plc.connect('192.168.1.121',1,0) | |
| itemlist = filter(lambda a: a!='',db.split('\n')) | |
| deliminator='\t' | |
| items = [ | |
| { | |
| "name":x.split(deliminator)[0], | |
| "datatype":x.split(deliminator)[1], | |
| "bytebit":x.split(deliminator)[2] | |
| } for x in itemlist | |
| ] | |
| #get length of datablock | |
| length = get_db_size(items,'bytebit','datatype') | |
| meh = DBRead(plc,10,length,items) | |
| print(""") | |
| Cold:\t\t\t{} | |
| Tempeature:\t\t{} | |
| RPis_to_Buy:\t{} | |
| Db_test_String:\t{} | |
| """.format(meh.Cold,meh.Temperature,meh.RPis_to_Buy,meh.Db_test_String), | |
| plc.disconnect() | |
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| # | |
| # | |
| # | |
| import snap7 | |
| import PLC | |
| myplc = snap7.client.Client() | |
| myplc.connect('192.168.1.121', 0, 1) | |
| myplc.get.plc.get_connected() | |
| myplc.get_connected() |
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| ######################################### | |
| # by Radosław Tecmer # | |
| # https://www.serwis-elektroniki.cba.pl # | |
| ######################################### | |
| import requests | |
| # import BeautifulSoup | |
| from bs4 import BeautifulSoup | |
| # # Tested with S7 1212C AC/DC/Rly and FW Version 4.2.1 | |
| ######################################### | |
| # Login # | |
| ######################################### | |
| payload_login = {'Login': 'rt69', 'Password': 'zzaa19rt', 'Redirection': ''} | |
| posturl_login = 'https://192.168.1.121/FormLogin' | |
| headers = { | |
| 'Host': '192.168.1.121', | |
| 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0', | |
| 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', | |
| 'Accept-Language': 'pl,en-US;q=0.7,en;q=0.3', | |
| 'Accept-Encoding': 'gzip, deflate, br', | |
| 'Referer': 'https://192.168.1.121/Portal/Portal.mwsl', | |
| 'Content-Type': 'application/x-www-form-urlencoded', | |
| 'Content-Length': '45', | |
| 'DNT': '1', | |
| 'Connection': 'keep-alive', | |
| 'Upgrade-Insecure-Requests': '1' | |
| } | |
| session = requests.Session() | |
| login_response = session.post(posturl_login, data=payload_login, headers=headers, verify=False) | |
| print(login_response.status_code) | |
| print(login_response.headers) | |
| # print login_response.cookies.get_dict() # will stay empty | |
| webpage = login_response.content | |
| ######################################### | |
| # Extract authentication Cookie # | |
| ######################################### | |
| webpage_soup = BeautifulSoup.BeautifulSoup(webpage) | |
| auth_cookie_part = webpage_soup.find('input', attrs={'name': 'Cookie'}) | |
| auth_cookie_part = str(auth_cookie_part) | |
| auth_cookie = auth_cookie_part.split('"')[5] | |
| print("Authentication cookie: "), auth_cookie | |
| ######################################### | |
| # Set Authentication Cookie # | |
| ######################################### | |
| s7cookies = dict(siemens_ad_session=auth_cookie, coming_from_login='true') | |
| ######################################### | |
| # Run Actions (require authentication) # | |
| ######################################### | |
| payload_control = {'"webHMIData".webHMI_DO1_User': '1', '"webHMIData".webHMI_DO0_User': '1'} | |
| usage = session.post('https://192.168.1.121/awp/AnalogInputs/api.io', cookies=s7cookies, data=payload_control, verify=False) | |
| print(usage.status_code) | |
| print(usage.headers) | |
| print(usage.content) | |
| ######################################### | |
| # Logout # | |
| ######################################### | |
| payload_logout = {'Cookie': auth_cookie, 'Redirection': ''} | |
| posturl_logout = 'https://192.168.1.121/FormLogin?LOGOUT' | |
| logout = session.post(posturl_logout, cookies=s7cookies, headers=headers, data=payload_logout, verify=False) | |
| print(logout.status_code) | |
| print(logout.headers) | |
| print(logout.content) |
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| ######################################### | |
| # by Radosław Tecmer # | |
| # https://www.serwis-elektroniki.cba.pl # | |
| ######################################### | |
| import requests | |
| # import BeautifulSoup | |
| from bs4 import BeautifulSoup | |
| # # Tested with S7 1212C AC/DC/Rly and FW Version 4.2.1 | |
| ######################################### | |
| # Login # | |
| ######################################### | |
| payload_login = {'Login': 'rt69', 'Password': 'zzaa19rt', 'Redirection': ''} | |
| posturl_login = 'https://192.168.1.120/FormLogin' | |
| headers = { | |
| 'Host': '192.168.1.120', | |
| 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0', | |
| 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', | |
| 'Accept-Language': 'de,en-US;q=0.7,en;q=0.3', | |
| 'Accept-Encoding': 'gzip, deflate, br', | |
| 'Referer': 'https://192.168.1.120/Portal/Portal.mwsl', | |
| 'Content-Type': 'application/x-www-form-urlencoded', | |
| 'Content-Length': '45', | |
| 'DNT': '1', | |
| 'Connection': 'keep-alive', | |
| 'Upgrade-Insecure-Requests': '1' | |
| } | |
| session = requests.Session() | |
| login_response = session.post(posturl_login, data=payload_login, headers=headers, verify=False) | |
| print(login_response.status_code) | |
| print(login_response.headers) | |
| # print login_response.cookies.get_dict() # will stay empty | |
| webpage = login_response.content | |
| ######################################### | |
| # Extract authentication Cookie # | |
| ######################################### | |
| webpage_soup = BeautifulSoup.BeautifulSoup(webpage) | |
| auth_cookie_part = webpage_soup.find('input', attrs={'name': 'Cookie'}) | |
| auth_cookie_part = str(auth_cookie_part) | |
| auth_cookie = auth_cookie_part.split('"')[5] | |
| print("Authentication cookie: "), auth_cookie | |
| ######################################### | |
| # Set Authentication Cookie # | |
| ######################################### | |
| s7cookies = dict(siemens_ad_session=auth_cookie, coming_from_login='true') | |
| ######################################### | |
| # Run Actions (require authentication) # | |
| ######################################### | |
| payload_control = {'"webHMIData".webHMI_DO1_User': '1', '"webHMIData".webHMI_DO0_User': '1'} | |
| usage = session.post('https://192.168.1.120/awp/AnalogInputs/api.io', cookies=s7cookies, data=payload_control, verify=False) | |
| print(usage.status_code) | |
| print(usage.headers) | |
| print(usage.content) | |
| ######################################### | |
| # Logout # | |
| ######################################### | |
| payload_logout = {'Cookie': auth_cookie, 'Redirection': ''} | |
| posturl_logout = 'https://192.168.178.50/FormLogin?LOGOUT' | |
| logout = session.post(posturl_logout, cookies=s7cookies, headers=headers, data=payload_logout, verify=False) | |
| print(logout.status_code) | |
| print(logout.headers) | |
| # print(logout.content) |
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| # implementacja stosu 3 | |
| """ | |
| Implementacja tablicowa stosu jest stosowana w językach programowania, które oferują tablice elementów jednego typu. | |
| Przy inicjalizacji stosu trzeba podać jego rozmiar, czyli maksymalną liczbę elementów, które ma przechowywać. | |
| Nowe elementy umieszczamy na coraz dalszych pozycjach w tablicy i zapamiętujemy liczbę elementów na stosie | |
| (jest to również indeks miejsca, do którego wstawimy następny element). Przy zdejmowaniu elementu ze stosu | |
| pomniejszamy numer indeksu, a na zwolnione miejsce wstawiamy bezpieczną wartość (w Pythonie jest nią None, | |
| a w C/C++ zero lub NULL). W języku Python możemy łatwo zasymulować taką konstrukcję. | |
| """ | |
| class Stack: | |
| def __init__(self, size=10): | |
| self.items = size * [None] # utworzenie tablicy i wstawiamy bezpieczną wartość None | |
| self.n = 0 # liczba elementów na stosie | |
| self.size = size | |
| def is_empty(self): | |
| return self.n == 0 | |
| def is_full(self): | |
| return self.size == self.n | |
| def push(self, data): | |
| self.items[self.n] = data | |
| self.n += 1 | |
| def pop(self): | |
| self.n -= 1 | |
| data = self.items[self.n] | |
| self.items[self.n] = None # usuwam referencję | |
| return data | |
| # koniec |
I am currently away. As soon as I can write it back
Exactly which place in the code you are asking about ??
Pozdrawiam
Radosław Tecmer
Można znaleźć nas na:
https://www.facebook.com/SerwissElektroniki
https://twitter.com/RTecmer
http://electronic.pythonanywhere.com/
http://rt69.pythonanywhere.com/
https://sewis-energoelektroniki-i-elektroniki.business.site/
Dane Kontaktowe
tel. 668-863-096
tel. 519-139-518
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czw., 20 sie 2020 o 05:30 Marcelo Ribeiro da Silva <notifications@github.com>
napisał(a):
… ***@***.**** commented on this gist.
------------------------------
How did you find out that the link '
https://192.168.1.120/awp/AnalogInputs/api.io' accesses the io file in
the PLC web folder? I tried to look for some reference in the documentation
and found nothing.
—
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Reply to this email directly, view it on GitHub
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.
My question is whether there is any documentation from Siemens that led him to arrive at the assembly of the endpoint below:
https://192.168.1.120/awp/AnalogInputs/api.io
https://192.168.1.120 = PLC IP
awp = Automation Web Programming
AnalogInputs = application name
api.io = would be the file that is in the web folder defined for the PLC
Another question is why you used the .io file extension, as I tried to read this file with a javascript client and it returns an empty key.
Have you tried to make this communication using a javacript library with, for example, axios?
Hi
https://johanneskinzig.de/index.php/software-development/18-restful-api-for-simatic-s7-1200-plc-python-client
I found the information I needed here
Pozdrawiam
Radosław Tecmer
Można znaleźć nas na:
https://www.facebook.com/SerwissElektroniki
https://twitter.com/RTecmer
http://electronic.pythonanywhere.com/
http://rt69.pythonanywhere.com/
https://sewis-energoelektroniki-i-elektroniki.business.site/
Dane Kontaktowe
tel. 668-863-096
tel. 519-139-518
czw., 20 sie 2020 o 12:59 Marcelo Ribeiro da Silva <notifications@github.com>
napisał(a):
… ***@***.**** commented on this gist.
------------------------------
My question is whether there is any documentation from Siemens that led
him to arrive at the assembly of the endpoint below:
https://192.168.1.120/awp/AnalogInputs/api.io
https://192.168.1.120 = PLC IP
awp = Automation Web Programming
AnalogInputs = application name
api.io = would be the file that is in the web folder defined for the PLC
Another question is why you used the .io file extension, as I tried to
read this file with a javascript client and it returns an empty key.
Have you tried to make this communication using a javacript library with,
for example, axios?
—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHub
<https://gist.github.com/db9bc5218aedb900900f7e4f719a91a6#gistcomment-3424625>,
or unsubscribe
<https://github.com/notifications/unsubscribe-auth/ALKHUR52NZXV3PC3RV4KVGTSBT6YXANCNFSM4QFTC44A>
.
I had already looked at this site, but the author also does not mention any documentation from Siemens that refers to the construction of the endpoint., But I am grateful anyway.
I had already looked at this site, but the author also does not mention any documentation from Siemens that refers to the construction of the endpoint., But I am grateful anyway.
Sorry but for a long time my Github was not supported by me
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How did you find out that the link 'https://192.168.1.120/awp/AnalogInputs/api.io' accesses the io file in the PLC web folder? I tried to look for some reference in the documentation and found nothing.