Siemens SIMATIC ET 200S - Limitations on the number of modules that can be connected;maximum configuration

Configuration Options
3-45
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
3.10 Limitations on the number of modules that can be
connected/maximum configuration
• Number of modules:
-- ET 200S with IM151-1 BASIC: max. 12 modules.
-- ET 200S with IM151-1 STANDARD; IM151-1 FO STANDARD;
IM151-1 HIGH FEATURE; IM151-3 PN:
max. 63 modules.
This includes power modules, electronic modules, RESERVE modules, and
motor starters.
• Bus length of the ET 200S:
-- Not relevant to the IM151-1 BASIC (see Section 4.1).
-- max. 2 m (configurable): on IM151-1 STANDARD;
IM151-1 FO STANDARD; IM151-3 PN
-- max. 1 m: with IM 151-1 HIGH FEATURE
• Parameter length:
-- with PROFIBUS DP: depends on the DP master used (maximum 244 bytes)
-- with PROFINET IO: not applicable for maximum structure