Siemens SIMATIC S7-400H - Fault-Tolerant Programmable Logic Controllers

S7-400H
System Manual, 03/2012, A5E00267695-11
19
Preface
1
1.1 Preface
Purpose of this manual
This manual represents a useful reference and contains information on operator inputs,
descriptions of functions, and technical specifications of the S7-400H CPUs.
For information on installing and wiring these and other modules in order to set up an
S7-400H system, refer to the
S7-400 Automation System, Installation manual.
Changes compared to the previous version
The following changes have been made in relation to the previous version of this manual,
SIMATIC, Fault-tolerant systems, Edition 11/2011 (A5E00267693-09):
● The firmware of the CPUs 41x-5H PN/DP has version 6.0
● The CPUs 41x-5H PN/DP feature a PROFINET interface
● CPU 416–5H has been added
● Know-How protection through block encryption (S7 Block Privacy)
● New protection mechanism "signed firmware update" as of STEP7 V5.5 SP2 HF1
● Increase of communication performance
● Reduction of processing times
● Adaptation of work memory and additional quantity frameworks to the CPUs 41x-3
PN/DP V6.0
Differences in system behavior between versions 4.5 and 6.0
● A user program that uses SFC 87 to read out the current connection status and that was
written for a H-CPU V4.x does not return any data on an H-CPU V6.0. The reason is that
the quantity Framework expanded to 120 connections also requires a larger target range
in the program. You must adapt the program accordingly.
● A reserve CPU can take over the role of master at startup, see chapter STARTUP mode
(Page 132).
● In large confi
gurations w
ith many CPs and/or external DP masters it may take up to 30
seconds until a requested restart is performed in the buffered POWER ON mode of the
H-CPU V 6.0, see chapter STARTUP mode (Page 132)
● In contrast to OB 84, the reason for the call is
not entered in the start information of
OB 82, see chapter Synchronization modules for S7–400H (Page 341)
● Extended cycle time in case of long synchroni
zation lines, see chapter Synchronization
modules for S7–40
0H (Page 341)