Chengdu Ebyte Electronic Technology Co., Ltd.
EBT3002 User Manual
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co., Ltd.
As an optimization for multi host request performance, storage based gateways can only work in
TCP server mode, improving the response speed on the network side.
Features:
（
1
）
The gateway has a 2K cache for storing instructions and returning results (taking reading
10 holding registers as an example, it can store approximately 67 instructions and returning
results);
（
2
）
RTU automatically clears cache when responding to timeout, ensuring real-time and
authenticity of data;
（
3
）
The polling interval can be customized, 0-65535ms (default: 200ms);
（
4
）
The gateway will poll the RTU device based on the instruction storage time used for
configuration. If the MODBUS host does not query the instruction again during the storage
time, the gateway will automatically delete the storage instruction and release the cache;
（
5
）
The first instruction and control instruction (05, 06, 0F, 10 function codes) will directly
access the RTU device;
（
6
）
Only support the storage of query results for 01, 02, 03, and 04 Modbus function codes;
5.4.5 Configurable gateway
The gateway automatically polls the RTU device registers based on pre configured MODBUS
instructions (only supports MODBUS read instruction configurations). Non storage table instructions
will directly operate the RTU device, and frequently read instructions can be stored in the gateway in
advance, which can shorten response time (query configured instructions). Data will not be directly
sent to the server and will only be returned after Modbus host requests, similar to the usage method
of "simple protocol conversion", If you need to automatically upload data to the server, please select
'Auto Upload'. Due to the above characteristics, the serial port side of the configurable gateway can
only connect to Modbus slave stations.
