Siemens NCM S7 appendix Cpu

Installing and Starting the Ethernet CP with STEP 7

Table 2-1 Settings in the “Options” Tab , continued

Option	Meaning / Effect
S Replace Module without PG	With this option, you can have the configuration data of the CP stored
	on the CPU. If you then replace CP, the configuration data for the
	new CP are downloaded automatically from the CPU when the CP is
	started up.
	If you select this option, the configuration data are stored long-term
	on the CPU instead of in the EPROM of the CP. Remember, however,
	that long-term storage on the CPU is only safe from power outages if
	the CPU is protected by battery backup or by using an S7 Memory
	Card.

		Note
		If you store the configuration data on the CPU, please read the note
		below.
		The following functions do not modify the configuration data on the
		CPU:
		S Reset module memory
		S Resetting to factory settings
		S Assigning an IP address1) (using the target system selection in
		the SIMATIC Manager or the properties dialog in HW Config or
		NetPro)
		If you subsequently upload the configuration data from the CPU to a
		PG you will always object the configuration data that were previously
		on the CP (with parameters, connections, IP address).
		1) Note: You should only use the assign IP address function during
		commissioning; in other words, before downloading the configuration
		data.
S	Ethernet Profile for	Select this profile if you use fault-tolerant communication in your
	Fault-Tolerant Connections	system. Fault-tolerant communication means that Industrial Ethernet
		is designed with redundancy and that you have configured
		fault-tolerant S7 connections.
		If you select the Ethernet profile for fault-tolerant connections here,
		the time response of the S7 connections is adapted. As a result,
		breakdowns of a connection are detected more quickly and the
		failover to redundant connections is faster.
		Note
		Select the Ethernet profile for fault-tolerant connections only when
		you actually use fault-tolerant S7 connections. Otherwise you must
		expect your system to be more susceptible to problems since, for
		example, the number of transfer or connection establishment
		attempts is reduced compared with non-redundant systems.
S	Individual Network Settings	Here, you can make fixed network settings, when necessary. As
		default, “Automatic Setting” is selected and this setting generally
		guarantees problem-free communication in most situations.
		If problems occur in communication (for example, when connections
		are not established or when there are often disturbances on the
		network), the reason may be that the selected or automatic network
		settings are not suitable. You can then select a network setting to suit
		your network configuration.

SIMATIC NET NCM S7 for Industrial Ethernet	59
Release 6/2003

C79000–G8976–C129–07