Siemens SIMATIC S7-400 Hardware And Installation Manual page 18

Product Overview
Connecting the M7-400 to a Programming Device / PC
For the remote setup of the M7-400, you can connect a programming device or PC
to the CPU of the M7-400 via a V.24 cable.
A PC/PG cable is used to connect a programming device or PC and CPU of the
M7-400 via the multipoint interface (MPI).
Location of Order Number and Product Version
The order number and product version are printed on every module of the
SIMATIC S7-400/M7-400. 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.
Abbreviated order
no.
(6ES7 ...)
1-6
www.gkbpx.com
Module designation
Product version
S7-400 and M7-400 Programmable Controllers, Installation Manual
Rating plate
C79000-G7076-C424-01