Chengdu Ebyte Electronic Technology Co.,Ltd
NB124ES_User Manual
Copyright ©2012–2023
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Chengdu Ebyte Electronic Technology Co.,Ltd
directly returns the data cached in the storage area, which greatly To a certain extent, the multi-host request
processing capability of the gateway is improved, and the time consumed by the entire request process is also
shortened. Users can customize the polling interval of the storage area instructions and the instruction storage time
according to their needs.
As an optimization of multi-host request performance, the storage gateway can only work in the TCP server
mode, which improves the response speed of the network side.
Features
：
（
1
）
The gateway has a 2K cache for storing instructions and returning results (reading 10 holding registers
as an example, about 67 instructions and returning results can be stored);
（
2
）
The RTU response timeout automatically clears the cache to ensure the real-time and authenticity of
the data;
（
3
）
The polling interval can be customized, 0-65535ms (default: 200ms);
（
4
）
The gateway will poll the RTU device according to the storage time of the command used for
configuration. If the MODBUS host does not query the command again during the storage time, the
gateway will automatically delete the storage command to release the cache;
（
5
）
The first command and control command (05, 06, 0F, 10 function codes) will directly access the RTU
device;
（
6
）
Only support query result storage of 01, 02, 03, 04 Modbus function codes;
5.4.4 Configurable Gateway
The gateway automatically polls the RTU device registers according to the pre-configured MODBUS
commands (only supports the configuration of MODBUS read commands), and the commands in the non-storage
