1.1
General Notes on Operation − Safety Warnings
Using the CP
You can use the CP 343-2 in the following automation systems:
S S7-300 − central configuration
S S7-300 − distributed configuration via ET 200M (IM153)
You can also connect the CP to an S7-400H via a redundant ET 200M.
Caution
To ensure protection from electrostatic discharge, the module may only be
operated when the front panel is closed.
When operating the module, implement the measures for preventing build up of
electrostatic charges. For information on this topic, refer to the S7-300 device
manual /4/.
You will find further information on conditions for use in Chapter 2.
Warning
!
WARNING − EXPLOSION HAZARD: DO NOT DISCONNECT EQUIPMENT
WHEN A FLAMMABLE OR COMBUSTIBLE A TMOSPHERE IS PRESENT.
Warning
!
When used under hazardous conditions:
S
If the cable or conduit entry point exceeds 70_C or the branching point of
conductors exceeds 80_C, special precautions must be taken: If the equipment
is operated in an air ambient of 50_C ... 60_C, only use cables with admitted
maximum operating temperature of at least 80_C.
S
Provisions shall be made to prevent the rated voltage from being exceeded by
transient disturbances of more than 40%. This criterion is fulfilled, if supplies
are derived from SELV (Safety Extra Low Voltage) only.
Restrictions
Access to AS-i analog values using data records 140 to 147 and to the binary
values of the B slaves using data record 150 is not possible with the CPU 318 with
a firmware version V1.1.3 or earlier.
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04
1 Technical Description
11