SST Automation GT200-PN-RS, Руководство пользователя

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below:
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Starting Address : the starting address of the register/switching value/coil in Modbus salve device, the
range of the parameter value is 0 to 65535.
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Number of Data: number of the register/switching value/coil of Modbus slave devices
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Mapping Address (HEX): starting address of data in the module
The address range of data mapping in the module memory:
Read command (1, 2, 3, 4): 0x0000~0x03FF
Write command (5, 6, 15, 16): 0x4000~0x43FF
Users can also use this area when write command is used as local data exchange: 0x0000~0x03FF
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Mapping Bit (0~7): For the bit operation command, the position where the start bit is located in, range:
0~7
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Type of Scan:
There are two ways, fast and slow scan. Every Modbus command can be set to fast scan
or slow scan. The gateway will send Modbus command according to the "Scan Rate". Scan Rate is
ratio of fast scan to slow scan (configured in the subnet configuration interface).