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. 810-4169
Mfr. Part No.6ES7241-1AH32-0XB0
BrandSiemens
$248.74
Each
units
S7-1200 Series Communication - RS232 RS232 1 - - - - 100mm 30mm 75mm -
RS Stock No. 668-3121
Mfr. Part No.6ES7223-0BD30-0XB0
BrandSiemens
$147.37
Each
units
S7-1200 Series Input/Output - Digital Digital 2 2 30 V dc - - 62mm 38mm 21mm -
RS Stock No. 788-7019
Mfr. Part No.7MH4910-0AA01
BrandSiemens
$1,458.15
Each
units
ET 200 Series Weighing - - - - - - - - - - - -
RS Stock No. 810-4166
Mfr. Part No.6ES7241-1CH32-0XB0
BrandSiemens
$301.99
Each
units
S7-1200 Series Communication - RS232 RS422/485 1 - 24 V dc - - 100mm 30mm 75mm -
RS Stock No. 834-7574
Mfr. Part No.7KM9300-0AB01-0AA0
BrandSiemens
$269.99
Each
units
- Communication - - - - - - - - - - - -
RS Stock No. 834-7578
Mfr. Part No.7KM9300-0AE01-0AA0
BrandSiemens
$501.40
Each
units
- Communication - - - - - - - - 43mm 63mm 22mm -
RS Stock No. 872-6309
Mfr. Part No.3RK7271-1AA30-0AA0
BrandSiemens
$203.48
Each
units
S7-1200 Series Communication - Current, Voltage Current, Voltage - 1 32 V dc - - 36mm 110.5mm 75mm -
RS Stock No. 208-3568
Mfr. Part No.6ES7274-1XH00-0XA0
BrandSiemens
$927.25
Each
units
S7-200 Series - - - - - 14 - - - 91mm 36mm 22mm -
RS Stock No. 665-4925
Mfr. Part No.7KM9300-0AM00-0AA0
BrandSiemens
$183.51
Each
units
PAC3200 Series, PAC4200 Series Expansion - - - - - - - - - - - -
RS Stock No. 453-2545
Mfr. Part No.6ES7331-7KF02-0AB0
BrandSiemens
$1,654.43
Each
units
S7-300 Series - - Analogue - 8 - 24 V dc - - 125mm 40mm 120mm -
RS Stock No. 746-6577
Mfr. Part No.6ES7322-1CF00-0AA0
BrandSiemens
$881.01
Each
units
S7-300 Series Output - - Digital - 8 48 V dc, 48 → 125 V dc - - 125mm 40mm 120mm -
RS Stock No. 746-6539
Mfr. Part No.6ES7321-1BH50-0AA0
BrandSiemens
$367.48
Each
units
S7-300 Series Input - Digital - 16 - 24 V dc - - 125mm 40mm 120mm -
New
RS Stock No. 196-3694
Mfr. Part No.6GK74431EX300XE1
BrandSiemens
$7,094.19
Each
units
SIMATIC S7 Communication Processor - RJ45 - 2 - DC Yes - 25mm 210mm 290mm -
New
RS Stock No. 196-3685
Mfr. Part No.6GK72427KX310XE0
BrandSiemens
$1,455.88
Each
units
SIMATIC S7-1200 Communication Processor - SMA - 1 - DC Yes - 30mm 75mm 100mm -
New
RS Stock No. 196-3655
Mfr. Part No.6GK11628AA00
BrandSiemens
$3,864.75
Each
units
PCs and SIMATIC PGs/PCs Communication Processor - RJ45 - 2 - DC Yes - 18mm 167mm 111mm -
RS Stock No. 746-6542
Mfr. Part No.6ES7321-1CH00-0AA0
BrandSiemens
$727.89
Each
units
S7-300 Series Input - Digital - 16 - 24 → 48 V ac/dc - - 125mm 40mm 120mm -
RS Stock No. 756-4028
Mfr. Part No.6GK5101-1BY00-2AA3
BrandSiemens
$1,882.42
Each
units
- Ethernet - Digital Digital 2 2 24 V dc - - 125mm 40mm 124mm -
New
RS Stock No. 196-3697
Mfr. Part No.6GT20020LA00
BrandSiemens
$862.79
Each
units
SIMATIC S7-1200 Communication Processor - RS422 - 1 - DC Yes - 30mm 75mm 100mm -
RS Stock No. 746-6573
Mfr. Part No.6ES7322-1BP50-0AA0
BrandSiemens
$1,765.95
Each
units
S7-300 Series Output - - Digital - 64 24 V dc - - 125mm 40mm 112mm -
RS Stock No. 746-6586
Mfr. Part No.6ES7322-1FF01-0AA0
BrandSiemens
$600.69
Each
units
S7-300 Series Output - - Digital - 8 120/230 V ac - - 125mm 40mm 120mm -