M3SR Series 4100
3.5.1 Control Unit MTC 1/4 (4001)
Figure 3.55 Menu 4001: CU MTC 1/4
In the central area of the menu CU MTC 1/4 the status of the last performed initiated built-in
test (IBIT) of the control unit is displayed. It shows 'OK' if no built-in test error has occurred.
It shows 'ERROR' if any error has occurred since power-on of the CU. Use the softkey 'Er-
ror...' to navigate to the control unit error list menu (for details see "Control Unit Error List
(4011)" on p. 3.103).
The central area also shows the currently selected connection quality (see Table 3.26).
Operating Manual 6175.4760.02 – 01
Control Unit Maintenance
ICN-4D-H-231000-R-D0894-00062-A-01-1
3.99