4.2.3 LED Indication for Communication Status
CM-09 is used to indicate the operation status of the three LED indicators (NODE,
ERROR, CPU) on the PROFIBUS-DP communication module.
On the keypad display, the status of the 3 LED indicators are displayed, in an order of
blank (reserved), NODE, ERROR, and CPU, from left to right.
(Example of an LED indicator status expressed with CM-09)