Siemens SIMATIC S7-400H - Controls and Indicators of the CPUs

Installation of a CPU 41x-H
4-2
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
4.1 Controls and Indicators of the CPUs
Operation and Display Elements of the CPU 414-4H/417-4H
Memory card slot for
synchronization submodule 1
INTF, EXTF, BUS1F,
BUS2F, FRCE, RUN, STOP
LEDs
Mode selector
Slot for the memory card
MPI/PROFIBUS DP interface
Incoming supply of external backup
PROFIBUS DP interface
REDF, IFM1F, IFM2F,
MSTR, RACK0, RACK1
LEDs
Under coverUnder cover
BUS1F
BUS2F
IFM1F
IFM2F
RACK0
RACK1
Under the metal lid
on the left-hand side
Interface for memory ex-
pansion*
Memory card slot for
synchronization submodule 2
* Only in CPU 417-4H
Module designation, version, abbre-
viated order number and firmware
version
V3.0.0
voltage
Figure 4-1 Layout of the controls and indicators of the CPU 414-4H/417-4H
LEDs
Table 4-1 gives you an overview of the LEDs on the individual CPUs.
Section 4.2 describes the statuses and errors indicated by these LEDs.