Rockwell-automation 1794-IJ2XT FLEX I/O Frequency Input Modules User M Manual de usuario descargar pdf (Pagina 47)

Publication 1794-6.5.11 - September 2011

Read and Write Configuration Maps for the FLEX I/O Module 37

4 R R Direction

Ch 0

F/A

Ch 0

MPA

Ch 0

R R Direction

Ch 1

F/A

Ch 1

MPA

Ch 1

5 Reserved Diagnostic Status

Where: R = Reserved

GS = Gate state

F/A = Frequency/Acceleration alarm

WO = Wire-off alarm

MPA = Missing pulse alarm

Block Transfer Read Word Assignments

(Octal Bit) 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Decimal Bit15141312111009080706050403020100

Bit/Word Definitions for Block Transfer Read Words

Word Bit Definition

Read

Word 0

Bit 00…15

(00…17)

Calculated value of frequency (channel 0) – frequency can be reported down to 1 or 1.0 Hz, depending on

the Frequency Range bit setting:

Below a 1 Hz value, 0 is reported

Below a 1.0 Hz value, 0.0 is reported.

Calculated frequency depends on Minimum Sampling Time and Missing Pulse Multiplier.

Word 1 Bit 00…15

(00…17)

% of Full Scale or Acceleration (channel 0) – Value of the calculated frequency scaled by the Maximum

Frequency, or Calculated Value of Acceleration in Hz/s, depending on the state of the Frequency or

Acceleration Alarm Select bit.

Note: Percentage Full scale is calculated accurately up to a maximum of 3,276.7%. Beyond this maximum,

the value of 3,276.7% will be returned, and a Calculation Failure (9) will be set in the Diagnostic Status

byte.

Word 2 Bit 00…15

(00…17)

Calculated value of Frequency (channel 1) – Frequency can be reported down to 1 or 1.0 Hz, depending on

the Frequency Range bit setting; below a 1 Hz value, 0 is reported; below a 1.0 Hz value, 0.0 is reported.

Calculated frequency depends on Minimum Sampling Time and Missing Pulse Multiplier.

Word 3 Bit 00…15

(00…17)

Percentage of Full Scale or Acceleration (channel 1) – Value of the calculated Frequency scaled by the

Maximum Frequency, or Calculated Value of Acceleration in Hz/s, depending on the state of the Frequency

or Acceleration Alarm Select bit. Percentage full scale will be calculated accurately up to a maximum of

3,276.7%. Beyond this maximum, the value of 3,276.7% is returned, and a Calculation Failure (9) is set in

the Diagnostic Status byte.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 86 87

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Rockwell-automation 1794-IJ2XT FLEX I/O Frequency Input Modules User M Manual de usuario Pagina 47

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