Chengdu Ebyte Electronic Technology Co., Ltd.
NB1A1User Manual
Copyright ©2012–2023
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Chengdu Ebyte Electronic Technology Co., Ltd.
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7
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(5) The first read instruction and control instruction (05, 06, 0F, 10 function code) will
directly access the RTU device;
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8
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Only 01, 02, 03, and 04 function codes can be stored after Modbus query results
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5.4.5 Configurable gateway
According to the pre-configured MODBUS instruction, the gateway automatically polls the RTU
device register (only the configuration of MODBUS read instructions is supported), and the
non-stored instructions will directly operate the RTU device. The frequently read instructions can be
stored in the gateway in advance, which can shorten the response time (query the configured
instructions). Data will not be sent directly to the server and will be returned only after the Modbus
host requests, similar to the method of "Simple Protocol conversion", if you want to upload data to
the server automatically, select "Automatic upload". Due to the above characteristics, only the
Modbus slave station can be connected to the serial port side of the configurable gateway.
Instruction storage instructions (added, instruction errors and formatting errors cannot be added,
no need to add CRC check bits)
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Instruction store description (delete)
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