Siemens SIMATIC ET 200SP System Manual

Configuring
7.2 Configuring the CPU
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
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UPDAT_PI: updates the process image partition of the inputs
With this instruction you read the signal states from the input modules into the process
image partition of the inputs (PIPI).
UPDAT_PO: updates the process image partition of the outputs
With this instruction you transfer the process image partition of the outputs to the output
modules.
Synchronous cycle interrupt OB
In the synchronous cycle interrupt OBs, you use the "SYNC_PI" and "SYNC_PO" operations
to update the process image partitions of the operations. For additional information on the
synchronous cycle interrupt OBs, refer to the STEP 7 Online Help.
Direct I/O access to the inputs and outputs of the module
As an alternative to access via the process image, you can directly access the I/O (write and
read access) if this is necessary for program-related reasons. Direct (write) access to I/O
also writes to the process image. This prevents a subsequent output of the process image
from again overwriting the value written by direct access.
Reference
Additional information on process image partitions is available in the function manual, Cycle
and response times (http://support.automation.siemens.com/WW/view/en/59193558
).

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