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Supported device types and v=
ersions
Comm=
unication line configuration
Communication station configuration
I/O tag configuration
Literature
Changes and modifications
Document revisions
MODBUS RTU MASTER supports data reading from the Circutor CVMk analyzers= .
There can be defined the following parameters:
Table 1
Keyword | Full name | Meaning | Unit | Default value |
---|---|---|---|---|
RC
|
Retry Count | The number of request retries when an error in c= ommunication occurs. | - | 2 |
RT
|
Retry Timeout | Delay between request retries if an error in com= munication occurs. | ms | 200 millisec. |
WFT
|
Wait First Timeout | First waiting for the response after sending a r= equest. | ms | 100 millisec. |
WT
|
Wait Timeout | Delay between the readings of a response until i= t is completed. | ms | 100 millisec. |
MWR
|
Max Wait Retry | The number of response reading retries until the= response is completed. | - | 15 |
String with protocol parameters is written according to this rule:
Key_word=3Dvalue;Key_word=3Dvalue;...
Example:
RC=3D1;RT=3D500;
If a keyword with a valid value has not been found in the initial string= , the default value is used according to Table 1.
I/O tags: Ai
Address =E2=80=93 a number in the range of 0 to 65535 = =E2=80=93 number of MODBUS double register. It can be specified as a d= ecimal number or a hexadecimal number with a hash at the beginning (e.g. #0= ABC).
The values are read by 2 registers and interpreted as a 4-byte integer. = The addresses of values are described in the literature about Circutor.
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