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Title: How to ignore the "Default value"? Post by: ccdr on March 31, 2017, 03:12:36 PM I'm using data logger suite modbus TCP query/response parser to fetch data from modbus TCP server.
The data occupy 2 registers and are parsed as 32-bit float. So I set "Registers to read" to 2 and "Count" to 1. But I can not get valid data upon every request. The next query following the valid data query is an invalid one with the exact data I set in "Default value" field. How could this happen? In what condition, the "Default value" is used as parsed data? If this is inevitable, how could I ignore such "Default value" avoiding the parser variable to log this nonsense value? Thanks. Title: Re: How to ignore the "Default value"? Post by: Arthur Grasin on March 31, 2017, 03:40:29 PM Hello,
The program uses the default value in case if the program cannot extract the specified value from a response (a response does not have necessary number of bytes) You cannot omit a response item if it does not exist in a response. |