Configuration Limit For Io Devices; Maximum Number Of Connections To Io Controllers; Maximum Permissible Bytes - Siemens ET 200SP HA Equipment Manual

3.5

Configuration limit for IO devices

3.5.1

Maximum number of connections to IO controllers

Definition
A maximum of 4 IO controllers are allowed to be connected to the IO device.
3.5.2

Maximum permissible bytes

Definition
The maximum bytes in the input data area or for bytes in the output data area depend on the
following:
• Connection type
• Number of IO controllers with connection to the shared device
• Configuration in Run
Description
The following maximum permissible number of bytes are available in the input data area or for
bytes in the output data area:
Connection type
Without system redun‐
dancy
System redundancy S2
System redundancy R1
See also
Online Support (https://support.industry.siemens.com/cs/ww/en/view/109760425)
IM 155-6 PN HA
Equipment Manual, 09/2021, A5E39262148-AE
Number of IO controllers with
connection to the shared de‐
vice
1 IO controller
2 IO controllers
3 or 4 IO controllers
1 redundant IO controller
1 redundant IO controller and
1 additional IO controller
Product overview
3.5 Configuration limit for IO devices
Requirement for the input data or out‐
put data
Maximum of 1440 bytes each
Maximum of 1440 bytes for each control‐
ler
Maximum of 360 bytes each
Maximum of 1000 bytes each
Maximum of 360 bytes each
Maximum of 1440 bytes each
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