Hi Julian,
I could tie a nice ribbon around it to make it look like a present?
Chris
Am 20.12.18, 10:49 schrieb "Julian Feinauer" :
Hey Chris,
thanks for the response.
I know there are strict packet size requirements for S7 but what we also
should keep in mind is the CPU of
Hey Chris,
thanks for the response.
I know there are strict packet size requirements for S7 but what we also should
keep in mind is the CPU of the PLC.
We had some situations where we put A LOT of bandwith on the CPU and PLC
programmers got angry... __
So I don’t know whats causing this.. is th
Hi Julian,
well a little explanation on "costs" of requests for S7 Protocol (but some
should apply for all):
- First of all: Every address I ask for, produces a cost in the amount of bytes
for the request (Each address has to be transferred)
- Secondly: Every address I ask for, usually produces
Hi Greg,
I like your approach and in fact we also frequently have the same requirements.
Thus, I wrote the scraper module (in the utils submodule) some weeks ago.
You give it a config file (currently json or yml) and it starts some background
threads to fetch all these values frequently.
Below yo
If the caller can say ‘know’ all the possible addresses ahead of time,
maybe there could be conceptually a ‘plan’ built, that would optionally be
used by the request builder
to build the best request, and cache extra data for some period of time.
So I want to read a single byte, the plan could bui
Hello all,
Years ago I went through implementing an interface to a couple of Allen-Bradley
products, and I faced the same question of how to optimize the reading and
writing operations. What I settled on, instead of trying to micro-optimize
individual operations, was to implement a “scan lis
Hi all,
right now the S7 driver is the only driver that makes use of dynamically
rewriting a message.
This is for example needed in order to allow reading of large read requests and
having the driver split that up into multiple messages.
Ideally it would not only split up the messages, but also
