Hardware Assembly And Commissioning Of The S7-400H; Figure 4-1 Hardware Assembly - Siemens SIMATIC S7-400H System Manual

Getting Started
4.3 Hardware assembly and commissioning of the S7–400H
4.3 Hardware assembly and commissioning of the S7–400H
Assembly of the hardware
Follow the steps below to assemble the S7-400H as shown in the following figure:
Figure 4-1
1. Assemble both modules of the S7-400H automation system as described in the
2. Set the rack numbers using the switch on the rear of the CPUs.
3. Install the synchronization modules in the CPU. See chapter Synchronization modules
4. Connect the fiber-optic cables.
5. Configure the distributed I/O as described in the
6. Connect the programming device to the first fault-tolerant CPU (CPU0). This CPU will be
7. A high-quality RAM test (self-test) is executed after POWER ON. The self-test takes at
42
Hardware assembly
Automation Systems, Installation
An incorrectly set rack number prevents online access and the CPU might not start up.
(Page 341).
Always interconnect the two upper and two lower synchronization modules of the CPUs.
Route your fiber-optic cables so that they are reliably protected against any damage.
You should also always make sure that the two fiber-optic cables are routed separately.
This increases availability and protects the fiber-optic cables from potential double errors
caused, for example, by interrupting both cables at the same time.
Furthermore, always connect at least one fiber-optic cable to both CPUs before you
switch on the power supply or the system. Otherwise both CPUs may execute the user
program as master CPU.
the master of your S7-400H.
least 10 minutes.
The CPU cannot be accessed and the STOP LED flashes for the duration of this test. If
you use a backup battery, this test is no longer performed when you power up in future.
Module Specifications
and
ET 200M Distributed I/O Device
System Manual, 03/2012, A5E00267695-11
S7-400
manuals.
manual.
S7-400H