User Manual
Section 5
GFK-2958L
May 2021
Detailed Description of I/O Modules
160
5.6.1
LED Indicators EP-12F4
Module Status
Green: Communication over the system bus
Red: No communication on system bus or
there is a diagnostic message displayed
1.1
Yellow: Input 0 active
1.2
--
1.3
--
1.4
--
2.1
Yellow: Input 1 active
2.2
--
2.3
--
2.4
--
3.1
Yellow: Input 2 active
3.2
--
3.3
--
3.4
--
4.1
Yellow: Input 3 active
4.2
--
4.3
--
4.4
--
For error messages refer to Section 12, LED Indicators and Troubleshooting.
Figure 69: Block Diagram EP-12F4