Skip to content
Free Ground Shipping | Overnight Shipping Available | Texas-based company, and all shipments come from the USA
(833) 800-7748

Siemens

Shop our collection of surplus Siemens PLCs. These industrial control systems have been used in a variety of industrial settings and have been fully tested for functionality and reliability. With models available, including the popular S7-300 and S7-1200 series, we have the perfect solution for your automation needs. Don't miss out on this opportunity to save on cost while still getting the industry-leading technology from Siemens. Browse our stock today and find the PLC that fits your specific needs.
  • 6ES7193-6AP20-0AA0 Siemens
    $300.00 - $665.00
    $665.00
    $300.00 - $665.00
    $665.00

    6ES7193-6AP20-0AA0 Siemens

    Simatic ET 200SP, BUSADAPTER BA SCRJ/RJ45, MEDIA CONVERTER FO - CU 1 X SCRJ FO-SOCKET AND, 1 X RJ45 SOCKET FOR PROFINET

  • 6ES7137-6BD00-0BA0 Siemens
    $1,250.08 - $3,893.75
    $3,893.75
    $1,250.08 - $3,893.75
    $3,893.75

    6ES7137-6BD00-0BA0 Siemens

    Simatic ET 200SP, CM 4 X IO-LINK ST Communication Module IO-LINK MASTER V1.1

  • 6ES7155-6AR00-0AN0 Siemens
    $412.50 - $1,327.50
    $412.50 - $1,327.50
    $412.50 - $1,327.50
    $412.50

    6ES7155-6AR00-0AN0 Siemens

    Simatic ET 200SP, PROFINET Interface Module IM155-6PN Basic, MAX. 12 PERIPHERY Modules, 2X Integrated RJ45 SOCKETS INCL. SERVERMODUL,

  • 6ES7154-1AA01-0AB0 Siemens
    $327.25 - $550.00
    $327.25 - $550.00
    $327.25 - $550.00
    $327.25

    6ES7154-1AA01-0AB0 Siemens

    Simatic DP, PROFIBUS DP Interface Module IM154-1 DP FOR ET 200PRO INCLUSIVE TERMINATING MODULE, CONNECTING Module IM 6ES7194-4A.00-0AA0 MUST BE ORD...

    View full details
  • 6ES7195-7HG80-0XA0 Siemens
    $547.36 - $700.00
    $547.36 - $700.00
    $547.36 - $700.00
    $547.36

    6ES7195-7HG80-0XA0 Siemens

    Simatic DP, BUS COUPLE BM DP/PA FOR 2 FDC 157-0 FOR REDUNDANT Operation, 160MM WIDTH, FOR EXPANDED TEMPERATURE RANGE FOR INSERT/REMOVE FUNCTION WHI...

    View full details
  • 6ES7195-7HD80-0XA0 Siemens
    $300.00 - $443.85
    $443.85
    $300.00 - $443.85
    $443.85

    6ES7195-7HD80-0XA0 Siemens

    Simatic DP, BUS Unit BM IM 157 FOR EXPANDED TEMPERATURE RANGE SUBMODULE FOR IM157 and IM153-2 FOR INSERT/REMOVE FUNCTION WHILE OPERATING MODE RUN

  • 6ES7195-7HD10-0XA0 Siemens
    $302.50 - $539.00
    $302.50 - $539.00
    $302.50 - $539.00
    $302.50

    6ES7195-7HD10-0XA0 Siemens

    Simatic DP, BUS Unit FOR ET200M FOR IntegratiNG 2 IM153-2 RED. FUNCTION: INSERT/REMOVE WHILE OPERATING MODE RUN

  • 6ES7193-6AS00-0AA0 Siemens
    $0.00 - $672.50
    $0.00 - $672.50
    $0.00 - $672.50
    $672.50

    6ES7193-6AS00-0AA0 Siemens

    SIMATIC ET 200SP, BusAdapter BA-SEND BA1XFC, 1x FastConnect connection for ET connection

  • 6ES7142-4BF00-0AA0 Siemens
    $350.98 - $392.70
    $350.98 - $392.70
    $350.98 - $392.70
    $350.98

    6ES7142-4BF00-0AA0 Siemens

    Simatic DP, ELECTRONIC Modules FOR ET200PRO 8 DO DC 24V, 0.5A Module DIAGNOSTICS; INCLUSIVE BUS MODULE, CONNECTING Module IO 6ES7194-4..00-0AA0 MUS...

    View full details
  • 6ES7195-7HC00-0XA0 Siemens
    $321.75 - $462.00
    $321.75 - $462.00
    $321.75 - $462.00
    $321.75

    6ES7195-7HC00-0XA0 Siemens

    Simatic DP, BUS Unit FOR ET200M F. THE INTEGR.OF ONE 80 MM WIDE I/O SUBMODULE FOR INSERT/REMOVE

  • 6ES7195-7HF80-0XA0 Siemens
    $0.00 - $459.25
    $0.00 - $459.25
    $0.00 - $459.25
    $459.25

    6ES7195-7HF80-0XA0 Siemens

    Simatic DP, BUS Unit BM DP/PA FOR EXPANDED TEMPERATURE RANGE SUBMODULE FOR DP/PA COUPLER FOR INSERT/REMOVE FUNCTION WHILE OPERATING MODE RUN

  • 6ES7194-3AA00-0BA0 Siemens
    $336.49 - $541.75
    $336.49 - $541.75
    $336.49 - $541.75
    $336.49

    6ES7194-3AA00-0BA0 Siemens

    Simatic DP, CONNECTING BLOCK M12, 7/8" FOR ET200ECO, 2 X M12 and 2 X 7/8", 2 ROTARY CODING Switch FOR PROFIBUS-DP, ADDRESS SETTING

  • 6ES7195-7HG00-0XA0 Siemens
    $387.20 - $462.00
    $387.20 - $462.00
    $387.20 - $462.00
    $387.20

    6ES7195-7HG00-0XA0 Siemens

    Simatic S7, SEPARATOR BUS MODUL BETWEEN F- and Standard Modules USE ONLY with SEPARATOR MODULE

  • 6ES7193-6AR00-0AA0 Siemens
    $300.00 - $357.47
    $357.47
    $300.00 - $357.47
    $357.47

    6ES7193-6AR00-0AA0 Siemens

    Simatic ET 200SP, BUSADAPTER BA 2X RJ45, 2 RJ45 SOCKETS FOR PROFINET

  • 6ES7193-6BP00-0BA0 Siemens
    $300.00 - $1,187.50
    $1,187.50
    $300.00 - $1,187.50
    $1,187.50

    6ES7193-6BP00-0BA0 Siemens

    Simatic ET 200SP, BASEUnit BU15-P16+A0+2B, BU-TYPE A0, PUSH-IN TERMINALS, W/O AUX-TERMINALS, BRIDGED TO LEFT BU WXH: 15MMX117MM

  • 6ES7223-1PL00-0XA0 Siemens
    $750.00 - $1,049.98
    $750.00 - $1,049.98
    $750.00 - $1,049.98
    $750.00

    6ES7223-1PL00-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-21X CPU ONLY, 16 DI DC 24 V/ 16 DO RELAY FOR S7-21X CPU ONLY

  • 6ES7223-1PM22-0XA0 Siemens
    $0.00 - $4,541.35
    $4,541.35
    $0.00 - $4,541.35
    $4,541.35

    6ES7223-1PM22-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-22X CPU ONLY, 32 DI 24 V DC, SINK/SOURCE 32 DO RELAY, 2A/POINT

  • 6ES7231-7PC22-0XA0 Siemens
    $1,245.00 - $2,563.10
    $1,245.00 - $2,563.10
    $1,245.00 - $2,563.10
    $1,245.00

    6ES7231-7PC22-0XA0 Siemens

    Simatic S7-200, ANALOG Input EM 231, FOR S7-22X CPU ONLY, 4AI, PT100/200/500/1000/10000 NI100/120/1000, CU10, 14 GOST, RESISTANCE 150/300/600 OHM, ...

    View full details
  • 6ES7223-1BL00-0XA0 Siemens
    $2,324.92 - $2,353.94
    $2,353.94
    $2,324.92 - $2,353.94
    $2,353.94

    6ES7223-1BL00-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-21X CPU ONLY, 16 DI DC 24 V/16 DO DC 24

  • 6ES7235-0KD00-0XA0 Siemens
    $1,765.00 - $2,903.40
    $1,765.00 - $2,903.40
    $1,765.00 - $2,903.40
    $1,765.00

    6ES7235-0KD00-0XA0 Siemens

    SIMATIC S7-200, ANALOG I/O EM 235, NON-ISOLATATED, 3 AI, AC 0 - 5V O. AC 0 - 10 V, 2-0.5 V, 1AQ, AC +/-10V, 0-20MA FOR S7-21X CPU ONLY

  • 6ES7253-1AA22-0XA0 Siemens
    $0.00 - $999.98
    $999.98
    $0.00 - $999.98
    $999.98

    6ES7253-1AA22-0XA0 Siemens

    SIMATIC S7-200, EM 253 POSITIONING MODULE, 200 KHZ, FOR CONTROLLING STEPPER OR SERVO DRIVE, OPEN LOOP CONTROL, PROGRAMMING WITH MICRO/WIN

  • 6ES7232-0HB00-0XA0 Siemens
    $2,845.40 - $3,510.00
    $2,845.40 - $3,510.00
    $2,845.40 - $3,510.00
    $2,845.40

    6ES7232-0HB00-0XA0 Siemens

    SIMATIC S7-200, ANALOG OUTPUT EM232, NON-ISOLATED 2AQ, +/- 10 V OR 0 - 20 MA 12 BIT RESOLUTION

  • 6ES7231-7PD21-0XA0 Siemens
    $0.00 - $1,712.50
    $1,712.50
    $0.00 - $1,712.50
    $1,712.50

    6ES7231-7PD21-0XA0 Siemens

    SIMATIC S7-200, T/C INPUT MOD. EM 231, FOR S7-22X CPU ONLY, 4 AI, +/-80 MV AND THERMOCOUPLE TYPE J,K,S,T,R,E,N; 15BIT+VORZ.

  • 6ES7231-0HC00-0XA0 Siemens
    $0.00 - $600.00
    $600.00
    $0.00 - $600.00
    $600.00

    6ES7231-0HC00-0XA0 Siemens

    SIMATIC S7-200, ANALOG INPUT EM 231, NON - ISOLATED, 3 AI 12 BIT UNIPOLAR, IN RANGES: DC 0-5 V/ DC 0-10 V, 0-20 MA FOR S7-21X CPU ONLY

  • 7MH4930-0AA01 Siemens
    $0.00 - $745.70
    $745.70
    $0.00 - $745.70
    $745.70

    7MH4930-0AA01 Siemens

    SIWAREX MS WEIGHING ELECTRONIC FOR CONNECTING ONE SCALE. FOR SIMATIC S7-200 /RS232-INTERFACE FOR CONNECTION OF A PC, TTY- INTERFACE FOR REMOTE DISPLAY

  • 6ES7232-0HD22-0XA0 Siemens
    $330.00 - $3,593.19
    $330.00 - $3,593.19
    $330.00 - $3,593.19
    $330.00

    6ES7232-0HD22-0XA0 Siemens

    SIMATIC S7-200, Analog output EM 232, only for S7-22X CPU, 4 AI, +/-10 V DC, 0..20mA 12/11-bit converter

  • 6ES7223-1BL22-0XA0 Siemens
    $341.61 - $462.00
    $341.61 - $462.00
    $341.61 - $462.00
    $341.61

    6ES7223-1BL22-0XA0 Siemens

    SIMATIC S7-200, Digital I/O EM 223, only for S7-22X CPU, 16 DI 24 V DC, Sink/Source, 16DO 24 V DC; 0.75 A/channel,source

  • 6ES7223-1PH00-0XA0 Siemens
    $0.00 - $537.50
    $537.50
    $0.00 - $537.50
    $537.50

    6ES7223-1PH00-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-21X CPU ONLY, 8 DI DC 24 V/ 8 DO RELAY FOR S7-21X CPU ONLY

  • 6ES7223-1PL21-0XA0 Siemens
    $0.00 - $1,332.00
    $1,332.00
    $0.00 - $1,332.00
    $1,332.00

    6ES7223-1PL21-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-22X CPU ONLY, 16 DI 24 V DC, SINK/SOURCE 16 DO RELAY, 2A/POINT

  • 6ES7231-7PB22-0XA0 Siemens
    $2,694.43 - $2,721.66
    $2,694.43 - $2,721.66
    $2,694.43 - $2,721.66
    $2,694.43

    6ES7231-7PB22-0XA0 Siemens

    SIMATIC S7-200, ANALOG INPUT EM 231, FOR S7-22X CPU ONLY, 2AI, PT100/200/500/1000/10000 NI100/120/1000, CU10, RESISTANCE 150/300/600 OHM 15 BIT + SIGN

  • 6ES7231-7PD22-0XA0 Siemens
    $1,187.50 - $1,254.35
    $1,187.50 - $1,254.35
    $1,187.50 - $1,254.35
    $1,187.50

    6ES7231-7PD22-0XA0 Siemens

    SIMATIC S7-200, T/C INPUT MOD. EM 231, FOR S7-22X CPU ONLY, 4 AI, +/-80 MV AND THERMOCOUPLE TYPE J,K,S,T,R,E,N; 15BIT+SIGN

  • 6ES7223-1BH00-0XA0 Siemens
    $1,556.83 - $1,817.50
    $1,556.83 - $1,817.50
    $1,556.83 - $1,817.50
    $1,556.83

    6ES7223-1BH00-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-21X CPU ONLY, 8 DI DC 24 V/8 DO DC 24 V

  • 6ES7222-1HF00-0XA0 Siemens
    $535.00 - $750.00
    $535.00 - $750.00
    $535.00 - $750.00
    $535.00

    6ES7222-1HF00-0XA0 Siemens

    SIMATIC S7-200, DIGITAL OUTPUT EM 222, OPTICALLY ISOLATED 8DO, (RELAY OUTPUTS) 2A FOR S7-21X CPU ONLY,

  • 6ES7223-1BH21-0XA0 Siemens
    $547.25 - $635.00
    $547.25 - $635.00
    $547.25 - $635.00
    $547.25

    6ES7223-1BH21-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-22X CPU ONLY, 8 DI DC 24 V, SINK/SOURCE, 8 DO DC 24V, 0.75A/POINT SOURCE

  • 6ES7222-1BF00-0XA0 Siemens
    $412.47 - $1,065.00
    $412.47 - $1,065.00
    $412.47 - $1,065.00
    $412.47

    6ES7222-1BF00-0XA0 Siemens

    SIMATIC S7-200, DIGITAL OUTPUT EM 222, OPTICALLY ISOLATED 8DQ, 24 V DC, 0.5A FOR S7-21X CPU ONLY

  • 6ES7232-0HB22-0XA0 Siemens
    $2,702.70 - $4,469.30
    $2,702.70 - $4,469.30
    $2,702.70 - $4,469.30
    $2,702.70

    6ES7232-0HB22-0XA0 Siemens

    SIMATIC S7-200, ANALOG OUTPUT EM 232, FOR S7-22X CPU ONLY, 2 AQ, +/- 10V DC, 12 BIT CONVERTER

  • 6ES7235-0KD21-0XA0 Siemens
    $0.00 - $674.23
    $674.23
    $0.00 - $674.23
    $674.23

    6ES7235-0KD21-0XA0 Siemens

    SIMATIC S7-200, ANALOG I/O EM 235, FOR S7-22X CPU ONLY, 4 AI, DC +/-10V; 1AQ, DC +/-10V 12 BIT CONVERTER

  • 6ES7231-7PD22-0XA8 Siemens
    Sold out
    $0.00 - $0.00
    $0.00
    $0.00 - $0.00
    $0.00

    6ES7231-7PD22-0XA8 Siemens

    SIMATIC S7-200 CN analog input EM 231, only for S7-22X CPU, 4 AI, +/-80 MV a. thermocouples Type J, K, S, T, R, E, N; 15 bit+sign this S7-200 CN pr...

    View full details
  • 6ES7235-0KD22-0XA0 Siemens
    $937.50 - $3,867.50
    $937.50 - $3,867.50
    $937.50 - $3,867.50
    $937.50

    6ES7235-0KD22-0XA0 Siemens

    SIMATIC S7-200, ANALOG I/O EM 235, FOR S7-22X CPU ONLY, 4 AI, DC +/-10V; 1AQ, DC +/-10V 12 BIT CONVERTER

  • 6ES7223-1HF00-0XA0 Siemens
    $797.50 - $1,279.15
    $797.50 - $1,279.15
    $797.50 - $1,279.15
    $797.50

    6ES7223-1HF00-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-21X CPU ONLY, 4 DI / 4 DO RELAY, 5-30V DC, 250V AC

  • 6ES7223-1PH21-0XA0 Siemens
    $1,629.98 - $2,961.41
    $1,629.98 - $2,961.41
    $1,629.98 - $2,961.41
    $1,629.98

    6ES7223-1PH21-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-22X CPU ONLY, 8 DI DC 24 V, SINK/SOURCE, 8 DO RELAY, 2A/POINT

  • 6ES7222-1EF22-0XA0 Siemens
    $484.00 - $1,090.55
    $484.00 - $1,090.55
    $484.00 - $1,090.55
    $484.00

    6ES7222-1EF22-0XA0 Siemens

    SIMATIC S7-200, DIGITAL OUTPUT EM 222, OPTICALLY ISOLATED 8DQ, 120/230V AC, 0.5A

  • 6ES7231-0HC22-0XA0 Siemens
    $0.00 - $343.75
    $343.75
    $0.00 - $343.75
    $343.75

    6ES7231-0HC22-0XA0 Siemens

    SIMATIC S7-200, ANALOG INPUT EM 231, FOR S7-22X CPU ONLY, 4 AI, 0 - 10V DC, 12 BIT CONVERTER

  • 6ES7221-1BF10-0XA0 Siemens
    $647.50 - $1,158.53
    $647.50 - $1,158.53
    $647.50 - $1,158.53
    $647.50

    6ES7221-1BF10-0XA0 Siemens

    SIMATIC S7-200, EM 221 DIGITAL INPUT MOD., OPTICALLY ISOLATED 8 DI, 24V DC, SOURCE INPUT FOR S7-21X CPU ONLY, ** PRODUCT DISCONTINUED **

  • 6ES7277-0AA21-0XA0 Siemens
    $0.00 - $3,009.60
    $0.00 - $3,009.60
    $0.00 - $3,009.60
    $3,009.60

    6ES7277-0AA21-0XA0 Siemens

    SIMATIC S7-200, PROFIBUS DP SLAVE MODULE, 9.6KB TO 12MB 1 PORT, PROFIBUS DP/MPI FOR CPU222 - CPU 226 WITH NEW FIRMWARE ONLY

  • 6ES7223-1PH22-0XA0 Siemens
    $0.00 - $2,539.24
    $2,539.24
    $0.00 - $2,539.24
    $2,539.24

    6ES7223-1PH22-0XA0 Siemens

    SIMATIC S7-200, Digital I/O EM 223, only for S7-22X CPU, 8 DI 24 V DC, Sink/Source, 8 DO relay, 2 A/channel

  • 6ES7221-1EF22-0XA0 Siemens
    $1,607.18 - $2,822.40
    $1,607.18 - $2,822.40
    $1,607.18 - $2,822.40
    $1,607.18

    6ES7221-1EF22-0XA0 Siemens

    Simatic S7-200, EM 221 Digital Input MOD., Optically Isolated 8DI, 120/230V AC

  • 6ES7223-1BH22-0XA0 Siemens
    $2,170.70 - $3,490.20
    $2,170.70 - $3,490.20
    $2,170.70 - $3,490.20
    $2,170.70

    6ES7223-1BH22-0XA0 Siemens

    SIMATIC S7-200, DIGITAL I/O EM 223, FOR S7-22X CPU ONLY, 8 DI DC 24 V, SINK/SOURCE, 8 DO DC 24V, 0.75A/POINT SOURCE