西门子（SIEMENS）公司的PLC产品包括LOGO、S7-200、S7-1200、S7-300、S7-400等。 西门子S7系列PLC体积小、速度快、标准化，具有网络通信能力，功能更强，可靠性高。S7系列PLC产品可分为微型PLC（如S7-200），小规模性能要求的PLC（如S7-300）和中、高性能要求的PLC（如S7-400）等。西门子股份公司是全球*的技术企业，创立于1847年，业务遍及全球200多个国家，专注于电气化、自动化和数字化领域。作为大的高效能源和资源节约型技术供应商之一，西门子在海上风机建设、联合循环发电涡轮机、输电解决方案、基础设施解决方案、工业自动化、驱动和软件解决方案以及医疗成像设备和实验室诊断等领域占据*地位。

西门子早在中国开展经营活动可以追溯到1872年，当时西门子公司向中国出口了*台指针式电报机，并在20世纪来临前夕交付了中国*蒸汽发电机以及*辆有轨电车。1985年，西门子与中国政府签署了合作备忘录，成为*家与中国进行深入合作的外国企业。140多年来，西门子以创新的技术、的解决方案和产品坚持不懈地为中国的发展提供全面支持，并以出众的品质和令人信赖的可靠性、*的技术成就、不懈的创新追求，在业界独树一帜。

西门子见证了中国改革开放带来的巨大变化，同时也顺应时代潮流，不断积极进行自身的改革与发展。2014财年（2013年10月1日——2014年9月30日），西门子在中国的总营收达到64.4亿欧元，实现稳健增长。西门子已在中国建立了77家运营企业，拥有超过32000名员工，是中国的外商投资企业之一。

DS200DENCF1ACF SOFTWARE PROM SET
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DS200DMCBG2A IOS DUP PROCESSOR
DS200DPCBG1A IOS+ POWER CONNECT CARD
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DS200DTBAG1A TERM. DIGITAL CONT. IN
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DS200EXPSG1A POWER SUPPLY CARD
DS200FCGDH1ABA LCI CONTROL & GATING
DS200FCGDH1B LCI CNTRL & GATING CONF/COAT
DS200FCSAG1A CURRENT SENSING INTERFAC
DS200FECBG1A FIELD EXCITER CROWBAR
DS200TBCBG1A TERMINATION(C)ANALOG SIGNALS
DS200TBPAG1A PLU TERMINATION BD
DS200TBPXG1A PROX SIGNAL BUFFER MODUL
DS200TBQAG1A TERM.BD (C)R-S-T TC I/O
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DS200TBQEG1B LM6000(RST)ANALOG TERM.C
DS200TBQFG1A LARGE STEAM I/O TERMINAT
DS200TBQFG1B LARGE STEAM I/O TERMINAT
DS200TBQGG1A TERMINATION MODULE
DS200TBSAG1A MK5_LM_TRANSDUCER_TB
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DS200TCCBG1A C EXTENDED ANALOG
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DS200TCPAG1A CONTROL PROCESSOR
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DS200TCPDG1B POWER DISTRIBUTION MODULE
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DS200TCQEG1A LM6000 I/O PROCESSOR
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DS200TCQFG1A TC2000 ANALOG I/O EXPAND