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https://issues.apache.org/jira/browse/PLC4X-337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17500069#comment-17500069
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liuqiang commented on PLC4X-337:
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Hi,[~cdutz], Thank you very much for your reply. this afternoon, I have used
"BYTE",but failed. so I try to use bit. in the website
"https://plc4x.apache.org/users/protocols/s7.html"; show the "SINT" only supply
for S1200 and S1500. anyway. I will try "SINT" tommorrow.
Another question, i do not know. a string length is String 2 + n bytes.
for example I have a 8 length string address in plc as %DB881.DBX912:STRING(8)
, it has 10 bytes. as %DB881.DBW912..... %DB881.DBW921 right?
the fist byte I must write the integer 8,
the sencond byte is the integer x is the real length,for the string
from the third to ten byte is convert specific letters to byte
is it right？[~cdutz]， If I am wrong， could you point it out？
Thank you very much [~cdutz][~cgarcia]
> S7 CAN NOT WIRTE STRING EVEN THE STRING SIZE IS LESS THEN 240
> -------------------------------------------------------------
>
> Key: PLC4X-337
> URL: https://issues.apache.org/jira/browse/PLC4X-337
> Project: Apache PLC4X
> Issue Type: Bug
> Affects Versions: 0.9.0
> Reporter: liuqiang
> Priority: Major
> Attachments: WRITING-STRING-TO-S7-400.pcapng,
> image-2022-02-26-11-07-37-602.png, my test program .png, screenshot-1.png
>
>
> Hi, [~cdutz]. now I want write string to s7-400 plc ,the tag address format
> as follow. but I can not success to do this. the string size is less 245,
> only 32. can you give me some suggest. thank you very much. looking forward
> to your replay... thank you very much again.
> %DB881.DBX912:STRING(8)[1]
> %DB881.DBX922:STRING(32)[1]
> %DB881.DBX956:STRING(32)[1]
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