Siemens NCU 7x0.3 PN Series Manual page 149

This plate is only visible, when the option board has been removed; it is attached to the
underside of the option board.
Note
The contents of the individual type plate fields on the actual option board may differ from
those described in this manual (e.g. updated product status, approvals and markings not yet
issued, etc.).
LED displays
LED H1 is located under the COM port. This can display the following operating states:
Table 9- 71
Color
Orange
Green
Red
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0
LED displays, H1
Status Meaning
lit COM01.3 is ready; after reset.
lit COM01.3 is active.
lit Operating error
Connectable components
9.4 COM01.3 RS 232C (V.24) module
149