Ascon tecnologic DY-5121, Руководство пользователя

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Chapter 4 - Module Configuration
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Signed 32 - 32-bit value, with sign. Most significant word (register) on low address.
Unsigned 32 (swapped) - 32-bit positive value. Most significant word (register)
on high address.
Signed 32 (swapped) - 32-bit value, with sign. Most significant word (register) on
high address.
Float - 32-bit floating point. (IEEE-754) Most significant word (register) on low
address.
Float (swapped) - 32-bit floating point. (IEEE-754) Most significant word (regis-
ter) on high address.
Double - 64-bit floating point. (IEEE-754) Most significant word (register) on low
address.
Double (swapped) - 64-bit floating point. (IEEE-754) Most significant word (reg-
ister) on high address.
Scaling - The Modbus register value will be divided by the scale value before
presented on the web-page, logged or compared with for alarm.
It will be multiplied with the scale value before value is written to a slave device.
Examples: Modbus register value = 510, Scale value = 10 -> 51.0 will be viewed on web-page.
Modbus register value = 5118, Scale value = 100 -> 51.18 will be viewed on web-page.
Web-page input = 127.5 Scale value = 10 -> 1275 will be written to Modbus register.
Offset - The Modbus register value will be subtracted with the offset value before
it is presented on the web-page, logged or compared with for alarm. If scaling is
also in use it is done before the offset is subtracted.
The Offset value will be added to the value before value is written to a slave
device. If scaling is also in use it is done after the offset is added.
Mask - Is used to mask out specific bits from the Modbus register, on the
webpage the value is presented in binary. The Modbus register will be masked
(logic and) and shifted to the right before the value is presented on the web-page,
logged or compared with for alarm.