ABBED1822a(HEDT300867R1)STEP7中有梯形图、语句表和功能块图3种基本编程语言，可以相互转换。通过安装软件包，还有其他的编程语言，以下简要介绍。(1)顺序功能图(SFC)STEP7中为S7Graph，它不是STEP7的标准配置，需要安装软件包，S7Graph是针对顺序控制系统进行编程的图形编程语言，特别适合顺序控制程序编写。(2)梯形图(LAD)梯形图直观易懂，适合于数字量逻辑控制。“能流”(Powerflow)与程序执行的方向。梯形图适合于熟悉继电器电路的人员使用。设计复杂的触点电路时最好用梯形图。其应用最为广泛。(3)语句表(STL)语句表功能比梯形图或功能块图的功能强。语句表可供喜欢用汇编语言编程的用户使用。语句表输入快，可以在每条语句后面加上注释。设计高级应用程序时建议使用语句表。(4)功能块图(FBD)“LOGO!”系列微型PLC使用功能块图编程。功能块图适合于熟悉数字电路的人员使用。(5)结构文本(ST)STEP7的S7SCL（结构化控制语言）符合EN61131-3标准。SCL适合于复杂的公式计算、复杂的计算任务和最优化算法或管理大量的数据等。S7SCL编程语言适合于熟悉高级编程语言（例如PASCAL或C语言）的人员使用。它不是STEP7的标准配置，需要安装软件包。(6)S7HiGraph编程语言图形编程语言S7HiGraph属于可选软件包，它用状态图（Stategraphs）来描述异步、非顺序过程的编程语言。HiGraph适合于异步非顺序过程的编程。(7)S7CFC编程语言可选软件包CFC（ContinuousFunctionChart，连续功能图）用图形方式连接程序库中以块的形式提供的各种功能。CFC适合于连续过程控制的编程。它不是STEP7的标准配置，需要安装软件包。在STEP7编程软件中，如果程序块没有错误，并且被正确地划分为网络，在梯形图、功能块图和语句表之间可以转换。如果部分网络不能转换，则用语句表表示。1762-IF2OF21762-OW16PS10-2T2-DD1-AD3IC660BBA020KJ3001X1-CA1KJ3002X1-BC1CIMR-M5N2015A02B-0228-B502A06B-6102-H245#H520ASX-16CATS48C11QATS48C14QPD63F160FOS79800D-00083480A83485A86100A86103A86105A86105C-OPT200DPS-250AB-47A3503ELC82*8MAC2VM1MVME167PA-34SEHDS02.2-W040N-HS32-01-FW3700A6ES7633-2BF02-0AE31C31132G011C31129G041756-0W161756-DNB1756-IB321756-L61CAT-140-MN-10006EP1436-1SH01升级替代型号6EP1436-3BA00DC24V20A0810140ACI04000140ACO13000140CPS11420140CPU53414B140CRA93100140CRP93100140DDI35300140DDO35300140NOE77101140XBP01600CHDQB50-75DMEV2000-4T0150PEV2000-4T0220PMDD112D-N030-N2M-130GA0ACS800-01-0020-3ACS800-01-0025-3ACS800-01-0060-3ACS800-01-0070-3ACS800-01-0100-3ACS800-01-0120-33V41503V4160140CHS11000140CPS11100140CPS11420140CPS12420140CPU43412A140CRA93200140CRP93200140DDI35300140DDI84100140DRA84000140NOE771011203-CN11746-A101746IM161746OW161747-L5421756L551756-BA21756-IF161756-OB16I1756OB321756-OF81761-L20BWA-5A2711P-T6C20D140CRA93200140CRP93200MDD112D-N-030-N2M-130GB0OKYM6W21A20B-3900-0042140ACI04000140ACO13000DPR250A20B-3900-0042140CPU11303490NRP95400GMI-S13AO810MT4414TMT4424TEV2000-4T0150PEV2000-4T0220P140DDI35300140DDO35300140NOE77110ES506ES7331-7RD00-0AB0ADVANTAG91006NH9720-3AA00A03B-0819-C161WH5-2FFL5201-2-0231C015-503-4MM05C-503-00MVME5500-0161ARTMO-250VE2T8PCNDSAI130DDSAO120ADSBC176SGMAH-01AAA21IC697MDL740EADAM-5017ADAM-5050ADAM-5510140CRA931001756L55M223503E3700AMPL-A320H-HJ22AADKCXX.3-100-7PS4-201-MM1E4809-770-069AMVME167PA-34SEHE100S6FX1115-0AA026FX1123-7AA026FX1125-1AA016FC3988-7AF011756-OW16I1756-TBCH/ACACR-IR151515EBSDCSPOW-1PSSICPU302060PSSIDI20T302112PSSIDIOZ302108PSSIPS24302051C7012A12021326AB-B420E-M2L1747-CP3(USB)1747-CP3(串口)1747-L542IC693PBM200140DD035300140DDI35300140NOE77110TSXCTY4ATSXPBY100XBT-F034610PS-M06D12S5-NJ1L(S)A06B-0126-B5776ES7331-7KF02-OABO6ES7332-5HD01-OABO1756-CN21756-EWEB1756-IB321756-L631756-OF81756-OV32E972-0DP10MC-4/11/10/4001756-CNB1756-CNBR1756-ENBT1756-IF81756-IM16I1756-L631756-OF41756-OF81756-OW16I1756-PA721756-PA751756-TBCH1756-TBNH1757-SRMLOGO-230RC1746-IM161746-OW161746-P21747-L5411756-BA11756-IB321756-L55M131756-OB321756-PA72/C6ES7307-1EA00-0AAO6ES7315-2AF03-0AB06ES7317-2AJ10-0AB06ES7321-1BL00-0AA06ES7322-1BH02--0AA06ES7322-1BL00-0AA06ES7322-1HH01--0AA06ES7331-7KB02-0AB06ES7331-7KF02-0AB06ES7332-5HD01-0AB06ES7953-8LL00-0AA06ES7971-1AA00-0AA06SE7216-2BD23-OXB0VLT2822PT4B20SBR1DBF10A00C0OP-620621-6575ES1-112-7MTA03B-0801-C054A03B-0807-C161A06B-6114-H208A16B-1212-022A16B-2200-035A16B-2200-036A20B-2000-01702094-BC02-M02-S872C-D3NP12-D4PSR4/5A-2503TK2804-0BB43TK2907-0BB41746-NO8I1770-XYC1771-A2B1771-CD1771-P71794-ASB1794-IM81794-OM81794-TBNOP-620INNIS21INNPM12K-TFT-AN-CCFTFERE100SGDH-04AE140ACI04000140ACO02000140DDI35300140DDO35300140NOE77101N4010AR3767CGM2QA100L4B140ARI03010DDI-35300DDO-35300XB2-BVM3LCFX2N-4DA1746-IB161746-NI81746-NIO4I1746-OA161746-P41747-L5321756-CNBR440R-S35001SCXI-1000SCXI-1166SCXI-1327SCXI-1600DSO6012AA06B-6050-H050BC635PCI3A0350.6DSTC176KL1002KL2012A16B-1212-0210A16B-1212-0220A16B-2200-0350A16B-2200-0361A20B-2000-01703CP260。60-16468-2-061-001756-DNBTC-PRS021GP37W2-BG41HE693THM6651756-CNB/D1756-OW16I1756-TBCH/A140NOE77101PPC-105T1756-RM1756-RMC101786-RG61786-TPS1786-XTA06B-0075-B003FXM5-110A-20A602453-59AA06B-0075-B0033BSC610038R1SD8223BSC610039R1SD823KPC2004HDD，SHOCK-RESISTANTVER,ASSYUSB-STICK4GB5X00226G01EVS9325-ESEVS9327-ESEVS9328-ESL3MF-032/64GFOKS-G序列号S/N：11851FRN7.5P11S-4CXAS-B824-0161784PKTX6SN1123-1AB00-0BA2E6CP-AG5C2562MMCS40A0022-5A3-4-00140ACI03000140ACO0200043AP-FA45C/PB-BA1FK7081-5AZ91-1ZZ9-ZS042.5KW1FK7100-5AZ91-1ZZ9-ZS053.2KW1FK7101-5AZ91-1ZZ9-ZS074.2KW8.5AKPS-600/20-ESCKSD1-16KSD1-48开关电源1756-CNB1756-TBCH/A6AV6642-0AA11-0AX1140NOE77100ATV312H075N4ATV31H075N4APS416-BGT-410P6153LPR-24VDC-UOP-620ACS510-01-017A-4FSU8IC693MDL655HKJ3001X1-CA1KJ3201X1-BA16DR5020-ONN01-OAAO=6DR5020-ONN00-OAAOTWDLCAA24DRF1757-SRM1756-ENBT/AFR-A740-15K-CHTC25DND2301/2NPT(M)/直径14*2材质304SSFR-8-1/8VL/O-3-1/4VZ-3-PK-3140AC013000140ACI04000140ACO02000140CPS11420140CPU11302140CRA21110140CRP81100140DAO85300140DDI35300140XBP016001394C-SJT22-DKEBA-HT4011394C-SJT22-DA16B-2201-0480A20B-2100-0790GPD515C-A080CIMR-G5U2018C7012G1019JZRCR-NPP01-1300835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