Siemens SIMATIC S7 CPU 417-4 H Produktinformation Seite 18

CPU 417-4H
Setting the Number of Messages in the Diagnostic Buffer
You can use STEP 7 to specify the number of messages in the diagnostic buffer. This can be
done on the "Diagnostics/Clock" tab. Set a large number (e.g. 1500).
Setting the Parameter Assignment Monitoring Time
The parameter assignment monitoring time is a CPU parameter that you enter during hardware
configuration using STEP 7. The monitoring time depends on the size of the S7-400H
configuration. If the monitoring time is set too short, the CPU will enter the W#16#6547 event in
the diagnostic buffer. We recommend you set a parameter assignment monitoring time of 60 s.
Configuring Modules that Are Addressed in the I/O Address Area
Always configure a module that is addressed in the I/O address area so that it is either
completely within or completely outside the process image.
Otherswise, consistency cannot be guaranteed and corrupted data may result.
Compatibility with the CPU 417-4H with Firmware Version V 1.1.x
The dynamic response of the CPU 417-4H as of firmware version V 2.0.0 at coupling and
updating has changed to that of the CPU 417-4H with firmware version V 1.1.x .
The new functions that have been integrated in the CPU 417-4H as of V 2.0.0, (for example,
master CPU connections not terminated during coupling and updating, bumpless transfer of
the inputs and outputs even in the case of one-sided I/Os), mean that more data has to be
copied than in systems in the case of the CPU 417-4H with V 1.1.x. The procedure for the data
transfer of the two CPUs for coupling and updating has been improved, which means that the
transmission times may change.
If you want to download or transfer the configuration for a CPU 417-4H with V 1.1.x to a
CPU 417-4H with a firmware version > V2.0.0, use STEP7 to set cycle time monitoring and the
monitoring times for updating (see also S7-400H Programmable Controller; Fault-Tolerant
Systems, Section 5.3).
Monitoring Time of F Modules
If you are using F modules, you have to select the monitoring time for each F module higher
than the switch-over time of the active channel in the H system (You can find a formula for the
upper limit of this switch-over time in the S7-400 Programmable Controller, Fault-Tolerant
Systems manual, Section 6.3 "Using Single-Channel Switched I/O".).
If you do not observe these regulations, the F modules may fail when switching over the active
channel.
Configuring Communication Modules CP443-1
Ethernet CPs of the CP443-1 type with the order numbers 6GK7 443-1EX10-0XE0 and
6GK7 443-1EX11-0XE0 with firmware version < V2.0.0 must not be configured in full duplex or
automatic operation. If you do not observe this, your H system may fail.
A5E00130864-03
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