Siemens SIMATIC S7-400 Installation Manual page 15

Components
PG cables
PROFIBUS components
for example, PROFIBUS bus
terminal
RS 485 repeaters
Programming device (PG) or PC
with the STEP 7 software
package
Fan subassemblies
(for special areas of application)
Additional components of the S7-400 such as communications processors, function
modules, etc., are described in separate manuals.
Location of the order number and product version
The order number and product version are printed on every module of the
SIMATIC S7-400. The firmware version is also printed on the CPUs. The following
figure shows their locations on a module.
For the product version, an X is entered instead of the valid number. The following
figure shows a module with Product Version 1.
CPU 412-1
412-1XF04-0AB0
V 4.0
Firmware version
(in CPUs)
Automation System S7-400 Hardware and Installation
A5E00850741-01
Function
...connect a CPU to a
programming device.
... connect the S7-400 to other
S7-400 devices or programming
devices.
...amplify data signals on bus
lines and links bus segments.
...configures, programs, debugs,
and assigns parameters to the
S7-400.
...ventilates modules in special
cases; can be operated with or
without a filter.
Module designation
X 2
3 4
Product version
Abbreviated order number
(6ES7 ...)
Product Overview
Illustration
Type label
1-3