
Flex M Engineered Receiver Instruction Manual
October 2014
Page 33 of 49
4.9.1 DIGITAL INPUT MODULE LED OPERATION
When the Flex M system is supplying power to the Digital Input module, there is an LED that indicates the
power and communication status of the Relay module.
Figure 32. GEN1 Digital Input Module LED Placement
OK LED
o Solid indicates module communication with system is good
o 3 Blinks indicates read/write error to attached CPU module
Additionally, there are 8 LEDs labeled 1 through 8 on the Digital Input module. When the LED is on, this
indicates that the module is receiving a signal/input at that input.
LED1
o Digital Input 1 is active (non-zero)
LED2
o Digital Input 2 is active (non-zero)
LED3
o Digital Input 3 is active (non-zero)
LED4
o Digital Input 4 is active (non-zero)
LED5
o Digital Input 5 is active (non-zero)
LED6
o Digital Input 6 is active (non-zero)
LED7
o Digital Input 7 is active (non-zero)
LED8
o Digital Input 8 is active (non-zero)
Inputs 9-12 do not have a viewable LED.
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