Siemens SIMATIC ET 200SP User Manual

Functions
8.2 Retentive memory NVRAM
CPU 1515SP PC (F)
60 Manual, 05/2017, A5E32701806-AC
Temperature monitoring
Three thermistors monitor the temperature at multiple locations of the CPU 1515SP PC (F):
● Processor temperature
● Temperature in the vicinity of the RAM ICs/blocks
● Temperature of the basic module
If one of the temperature values exceeds the set temperature threshold, the temperature
monitoring triggers a temperature error. The temperature error activates the IPC DiagBase
and/or IPC DiagMonitor software.
The temperature error remains stored until the temperatures fall below the temperature
threshold again and it is reset using one of the following measures:
● Acknowledgment of the error message by the monitoring software
● Restart of the device
8.2
Retentive memory NVRAM
Retentive memory is non-volatile memory for saving a limited quantity of data in the event of
power failure.
The data defined as retentive is stored in retentive memory. This data is retained beyond a
power-off or power failure.
A corresponding function is implemented in the S7-1500 software controller to allow NVRAM
to be used there. Up to 410 KB of data is backed up to non-volatile data memeory by this in
the event of power failure. This function can be set on the engineering station in the TIA
Portal.

Siemens SIMATIC ET 200SP Specifications

General

System Type	Distributed I/O System
Mounting	DIN Rail
Communication Protocol	PROFINET, PROFIBUS
IP Rating	IP20
Category	I/O Systems
Supply Voltage	24 V DC
Modularity	Yes
Hot Swapping	Yes
Storage Temperature	-40°C to +70°C
Digital Inputs	Yes
Digital Outputs	Yes
Analog Inputs	Yes
Analog Outputs	Yes
Communication Interface	PROFINET, PROFIBUS
Number of Modules	Up to 64
Relative Humidity	5 to 95% (non-condensing)
Operating Temperature	-25°C to +60°C