
Flex M Engineered Receiver Instruction Manual
October 2014
Page 31 of 49
4.8.1 ANALOG I/O MODULE LED OPERATION
When the Flex M system is supplying power to the Analog I/O module, there is an LED that indicates the
power and communication status of the Analog I/O module.
Figure 29. Analog I/O 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 Analog I/O module. When the LED is on, this
indicates that the module is sending/receiving a signal on that input or output.
LED1
o Analog Output 1 is Active (non-zero)
LED2
o Analog Output 2 is Active (non-zero)
LED3
o Analog Output 3 is Active (non-zero)
LED4
o Analog Output 4 is Active (non-zero)
LED5
o Analog Input 1 is Active (non-zero)
LED6
o Analog Input 2 is Active (non-zero)
LED7
o Analog Input 3 is Active (non-zero)
LED8
o Analog Input 4 is Active (non-zero)
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