Rockwell Automation 1794-IJ2XT FLEX I/O Frequency Input Modules User Manual - Manual (Page 52)

Publication 1794-6.5.11 - September 2011
42 Read and Write Configuration Maps for the FLEX I/O Module
Bit 13 (15) Frequency range bits (channel 0) – Specifies the Frequency Range of the Frequency
input.
0 = 1…32767 (below 1 Hz reports 0);
1 = 1.0…3276.7 (below 1.0 Hz reports 0.0).
Default = 0
Bit 14 (16) Safe state mode bit – selection determines how module alarm outputs react to bus
communication and internal module faults
Local fault = Wire Off Fault or Missing Pulse Alarm
0 = Reset outputs
1 = Hold last state
Default = 0 (reset outputs)
Bit 15 (17) Communication fault – Signals that communication has been interrupted on the
network. The adapter signals that the module should execute its fault routine or go to
the Safe State and control any Alarm Outputs accordingly. During normal startup, this bit
must be set (1) by the user program to begin normal module operation of Alarm Outputs
(in effect, an output enable). When the adapter communication link is broken, the
adapter will reset this bit (0). Adapter dependent.
Default = 0
Word 1 Bits 00…15
(00…17) Maximum frequency or absolute value acceleration/deceleration (channel 0) – Specifies
the highest Frequency or absolute Acceleration/Deceleration value allowed on the
Frequency input. 0…32,767, 0.0…3,276.7 Hz. or 0…32,767 Hz/s depending on the
Frequency Range and Frequency/Acceleration Alarm Select bits.
Word 2 Bits 00…07 Frequency scaling multiplier (channel 0) – Specifies a multiplier to scale the incoming
Frequency value, 0…255.
Default = 0 – no scaling multiplication performed (x1)
Bits 08…15
(10…17) Frequency scaling divisor (channel 0) – Specifies divisor to scale the incoming Frequency
value, 0…255.
Default = 0 – no scaling division performed (divided by 1)
Bit/Word Definitions for the Block Transfer Write Words
Word Bit Definition