Rockwell-automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Manual do Utilizador descarregar pdf (Página 110)

Publication 1794-UM065B-EN-E - September 2010

98 FLEX I/O HART Module Commands

Universal Commands

Common Practice

Commands

Universal HART Module Commands

Command Action Meaning

0 Read Read unique device

identification

Twelve-byte device identifiers are given in the response

1 Read HART variables (process

values)

Commands are only supported for compatibility purposes and are without any

meaning

The transmitters, namely the SCAN function, have the following functions.

•Read primary variable

•Read primary variable as current (in mA) and percent range)

•Primary variable is read as a current (in mA) and four predefined dynamic

variables

2— —

3— —

11 Read unique identifier

associated with tag

The response is a twelve-byte device identifier if the given tag matches the tag of

the multiplexer

12 Read message Read the 32-bit message (also see bit 17)

13 Selection switch markings in

hand, read description and date

Read the eight-digit selection switch marking (tag) and the 16-digit time and date

17 Write Write message The 32-digit message is written (also see bit 12)

18 Write tag, description, and date Save an 8-digit (tag), a 16-digit description and date

Common Practice HART Module Commands

Command Action Meaning

38 Write Reset configuration changed

flag

Delete status information

41 Perform device self-test Performs the device self-test similar to turning on the power supply

If no error occurs, the malfunction status message is deleted (if it had been set)

42 Perform device reset Immediately after the command is confirmed, a reset of the device HART

processor is performed

48 Read Read additional device status —

1 2 ... 105 106 107 108 109 110 111 112 113 114 115 ... 163 164

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Rockwell-automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Manual do Utilizador Página 110