Siemens ET 200SP HA - Displays and interrupts; 6.1 Status and error displays

3.5 Con󹪝guration limit for IO devices
3.5.1 Maximum number of connections to IO controllers
De󹪝nition
A maximum of 4 IO controllers are allowed to be connected to the IO device.
3.5.2 Maximum permissible bytes
De󹪝nition
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
• Con󹪝guration 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 Number of IO controllers with
connection to the shared de‐
vice
Requirement for the input data or out‐
put data
Without system redun‐
dancy
1 IO controller Maximum of 1440 bytes each
2 IO controllers Maximum of 1440 bytes for each control‐
ler
3 or 4 IO controllers Maximum of 360 bytes each
System redundancy S2 1 redundant IO controller Maximum of 1000 bytes each
1 redundant IO controller and
1 additional IO controller
Maximum of 360 bytes each
System redundancy R1 Maximum of 1440 bytes each
See also
Online Support (
https://support.industry.siemens.com/cs/ww/en/view/109760425)
Product overview
3.5 Con󹪝guration limit for IO devices
IM 155-6 PN HA
Equipment Manual, 09/2021, A5E39262148-AE 19