7
4
working station indicator;
5
Power supply input terminal;
6
Operation / communication indicator, DI / DO indicator;
7
Operation keys: test keys;
8
485 Communication and DI / DO input terminals;
5. Use the operational guidelines
Figure 5 panel schematic diagram
5.1 Definlight definition
5.1.1 Light light of main module
（
1
）A SL220Z-Sx / 16 Main Module indicator lamp (the same as ASL220-Sx / 16)
Operating
indicator
light (green)
Fllink (about once per second when the module is in normally)
Communication
indicator light (green)
Blink (flash once during module ALIBUS communication)
Long light (bus congestion)
DI(red)
Long light (DI signal input detected)
