PLC Expansion Modules

PLC expansion modules (as used with programmable logic controllers) are the ideal solution for the acquisition and management of applications that include PLCs. They read and condition data from strain gaugeload and communicate basic weight data back to the processor.

What are PLC expansion modules used for?

PLC expansion modules are used in a wide range of applications such as non-automatic weighing machines, measuring of crane and cable loads, force measuring, platform scales and crane scales. To connect PLC expansion modules, a communication cable must be used to connect the module's PLC expansion port to the PLC. The primary task of an expansion module is the measurement and conversion of sensor voltage into a weight value.

Types of PLC expansion modules

PLC expansion modules are available in single or dual configurations. Other designs are available for more specialist applications such as dispenser/filler models or feeder control models. The different variables to choose from include number of inputs and outputs, voltage category, range and application.


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Description Price For Use With Module Type Range Input Type Output Type Number of Inputs Number of Outputs Voltage Category Memory Available Memory Length Width Depth Application
RS stock no. 746-6151
Mfr. Part No.6GK7277-1AA10-0AA0
BrandSiemens
R 2,705.45
Each
units
S7-1200 Series Compact Ethernet Switch, Compact with S7 1200 4 Port - - - - - 24 V dc - - 100mm 45mm 75mm -
RS stock no. 662-3646
Mfr. Part No.6ES7138-4HA00-0AB0
BrandSiemens
R 9,065.91
Each
units
ET 200 Series, IM 151-7 Interface - - - - - - - - 119.5mm 35mm 75mm -
RS stock no. 609-8542
Mfr. Part No.TSXACZ03
R 3,284.34
Each
units
TSX 37 Series Adapter - Discrete Discrete 8 (Discrete I/O) 8 (Discrete I/O) 24 V - - - - - -
RS stock no. 746-5873
Mfr. Part No.6ES7231-7PF22-0XA0
BrandSiemens
R 18,998.61
Each
units
S7-200 Series Temperature Control Input - Analogue - 8 - - - - 80mm 71.2mm 62mm -
RS stock no. 611-9548
Mfr. Part No.FX2N-8EX-ES/UL
BrandMitsubishi
R 1,982.91
Each
units
FX3U Series Power Supply - - Digital, Relay, Transistor 8 8 → 64 24 V dc, 100 → 240 V ac Yes - 90mm 350mm 87mm -
RS stock no. 746-6602
Mfr. Part No.6ES7323-1BH01-0AA0
BrandSiemens
R 4,771.32
Each
units
S7-300 Series - - Digital Digital 8 8 24 V dc - - 125mm 40mm 120mm -
RS stock no. 746-6640
Mfr. Part No.6ES7332-5HF00-0AB0
BrandSiemens
R 18,667.02
Each
units
S7-300 Series Output - - Analogue - 8 - - - 125mm 40mm 120mm -
RS stock no. 385-247
Mfr. Part No.FX2N-32CCL
R 4,878.07
Each
units
MELSEC FX Series Remote Station - - - - - 24 V dc - - 43mm 90mm 87mm -
RS stock no. 400-2224
Mfr. Part No.EASY200-EASY
BrandEaton
R 975.79
Each
units
Easy 200 Series, Easy 700 Series, Easy 800 Series Coupling Unit - - - - - - - - 90mm 35.5mm 58mm -
RS stock no. 539-0897
Mfr. Part No.FX3U-USB-BD
BrandMitsubishi
R 2,324.73
Each
units
FX3U Series - - - - - - 5 V dc - - 46.1mm 19.6mm 53.5mm -
RS stock no. 746-6643
Mfr. Part No.6ES7331-7TF01-0AB0
BrandSiemens
R 17,639.56
Each
units
ET 200M Input - Analogue - 8 - 24 V dc - - 125mm 40mm 117mm -
RS stock no. 746-6646
Mfr. Part No.6ES7332-5HB01-0AB0
BrandSiemens
R 6,269.00
Each
units
S7-300 Series Output - - Analogue - 2 24 V dc - - 125mm 40mm 120mm -
RS stock no. 467-642
Mfr. Part No.6ES7953-8LP31-0AA0
BrandSiemens
R 7,163.98
Each
units
C7, ET200S, S7-300 Memory Card - - - - - 3.3 V dc Yes 8 MB - - - -
RS stock no. 401-523
Mfr. Part No.CP1W-8ET1
BrandOmron
R 1,900.57
Each
units
PLC Module Input/Output - - Transistor - 8 30 V dc - - 90mm 66mm 50mm -
RS stock no. 872-6309
Mfr. Part No.3RK7271-1AA30-0AA0
BrandSiemens
R 1,500.00
Each
units
S7-1200 Series Communication - Current, Voltage Current, Voltage - 1 32 V dc - - 36mm 110.5mm 75mm -
RS stock no. 872-6312
Mfr. Part No.6GK7243-1BX30-0XE0
BrandSiemens
R 9,296.71
Each
units
S7-1200 Series Communication Processor - - - - - 5 V dc - - 30mm 110mm 75mm -
RS stock no. 801-7646
Mfr. Part No.2736220
R 6,109.12
Each
units
Profibus Distributed I/O Device - Digital - 16 - 24 V dc - - 161mm 60mm 44.5mm -
RS stock no. 801-7501
Mfr. Part No.2861580
R 3,906.63
Each
units
INTERBUS Bus Coupler - - - - - 24 V dc - - 135mm 48.8mm 71.5mm -
RS stock no. 705-4906
Mfr. Part No.FX3G-232-BD
BrandMitsubishi
R 2,351.47
Each
units
FX3G Series RS232C Interface Adapter - - - 1 - 5 V dc - - 51.2mm 35mm 17.2mm -
RS stock no. 801-7450
Mfr. Part No.2861292
R 3,058.99
Each
units
- - - - - - - - - - 140.5mm 48.8mm - -