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Siemens SMT machine error: DP 3 cannot recognize ISS software version.

all smt 2026-06-21 3166
This is a typical distributed peripheral (DP) communication error in Siemens SMT machines (usually SIPLACE series). The error message 'ISS software version not recognized by DP 3' indicates that there is a communication issue between the machine's main control system (usually referred to as MMI or Line Coordinator) and the DP slave station (usually a module such as a mounting head, conveyor belt, or sensor module) at station 3, specifically the inability to recognize the software version of that slave station.

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