Modbus/en: различия между версиями
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(Новая страница: «Data exchange with Modbus devices takes place via registers. The Modbus Protocol defines four types of registers shown in the table: {|class="wikitable" align="ce…») |
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===Modbus data model=== | ===Modbus data model=== | ||
Data exchange with Modbus devices takes place via registers. The Modbus Protocol defines four types of registers shown in the table: | |||
{|class="wikitable" align="center" | {|class="wikitable" align="center" | ||
! | ! Table || Size || Access | ||
|- | |- | ||
! | ! Coils | ||
| 1 | | 1 bit || read and write | ||
|- | |- | ||
! | ! Discrete Inputs | ||
| 1 | | 1 bit || read only | ||
|- | |- | ||
! | ! Holding Registers | ||
| 16- | | 16-bit word || read and write | ||
|- | |- | ||
! | ! Input Registers | ||
| 16- | | 16-bit word || read only | ||
|} | |} | ||