Siemens SIMATIC S7-400 EXM 438-1 I/O expansion for FM 458 with 4x 16-bit analog outputs.
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The Siemens SIMATIC S7-400 EXM 438-1 is an I/O expansion module designed for the FM 458. It features four 16-bit analog outputs. This module is not spare part-compatible with the EXM438. It is used to extend the input/output capabilities of the SIMATIC S7-400 system.
