Rockwell Automation Publication 1794-IN049E-EN-P - May 2022
9
FLEX I/O 2-input Frequency Modules Installation Instructions
Diagnostics
The frequency input module returns diagnostics to the controller processor in word 5 of the BTR file. These diagnostics give you information on the status or condition of the module.
BTR Word 5
Table 4 - Status Indicators Description
Indicator
Condition
Operating Description
Input (0, 1)
(Freq, or Gate)
Off (Dark)
Input Turned Off, Input Not Used, or Wire Disconnected
On (Yellow)
Input Turned On (Active High or Active Low if Inverted)
Fault (F)
(Freq, or Gate)
Off (Dark)
Wire Connected, Normal Operation or Detection Disabled
On (Red Flashing)
Wire Disconnected, Fault Condition (for IEC 1+ Proximity switch or switch contacts with shunt resistor)
Output Alarm
(0, 1)
Off (Dark)
Output Alarm Turned Off
On (Yellow)
Output Alarm Turned On (Logic Drive On)
Status (OK)
Off (Dark)
24V Power Turned Off, or 5V Logic Power Problem
Solid Green
Module OK, Normal Operating Mode
Solid Red
Module Fault, Outputs Disabled
Table 5 - Diagnostic Bit Definition
Input Word
Bit
03
02
01
00
Definition
Word 5
Bits
00...03
0
0
0
0
0 = Normal Operation (No Failure)
0
0
0
1
1 = Calibration Failure
0
0
1
0
2 = Configuration Failure
A Minimum Frequency Sample Time value other than 0…9 was selected.
0
0
1
1
3 = Message Failure
0
1
0
0
4 = Lead Break Detection Hardware Failure
0
1
0
1
5 = Major Hardware Failure
0
1
1
0
6 = EEPROM Failure
0
1
1
1
7 = RAM Failure
1
0
0
0
8 = ROM Failure
1
0
0
1
9 = Calculation Failure
The actual Frequency is greater than 32,767 Hz or 3,276.7 Hz (overange). The scaled Frequency
is greater than 32,767 Hz or 3,276.7 Hz (overange). The % Full Scale calculation (based on Max
Frequency) is > 3,276.7%.
1010...1111
10...15 = Not used
Diagnostic Status - indicates the response from the module; a normal or non-normal operating condition.
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
word 5
for diagnostics
