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. 806-7082
Mfr. Part No.TM3SAC5R
$531.45
Each
units
Modicon M221, Modicon M241, Modicon M251 Communication - - - - - 24 V - - - - - -
RS Stock No. 746-6687
Mfr. Part No.6ES7341-1CH02-0AE0
BrandSiemens
$2,062.26
Each
units
S7-300 Series Communication Processor - - - - - 24 V dc - - 40mm 125mm 120mm -
RS Stock No. 489-4871
Mfr. Part No.151238
BrandMitsubishi
$142.37
Each
units
Alpha 2 Series Analogue Extension - Analogue Relay, Transistor 2 10 24 V dc - - 35.5mm 90mm 32.5mm -
RS Stock No. 746-3023
Mfr. Part No.CS1WEIP21
BrandOmron
$2,524.83
Each
units
CS1 Series Ethernet/IP Unit - - - - - 5 V - - 130mm 35mm 101mm -
RS Stock No. 788-7006
Mfr. Part No.7MH4960-2AA01
BrandSiemens
$1,143.56
Each
units
SIMATIC S7-1200 Weighing - Digital Analogue, Digital 4 5 24 V dc - - 70mm 75mm 100mm -
RS Stock No. 801-7466
Mfr. Part No.2703981
$642.58
Each
units
Modbus/TCP(UDP) Protocol Bus Coupler - Digital Digital 8 4 24 V dc - - 119.8mm 80mm 71.5mm -
RS Stock No. 433-9526
Mfr. Part No.6ES72411AA220XA0
BrandSiemens
$1,267.43
Each
units
S7-200 Series Modem - - - - - 24 V dc - - 71.2mm 80mm 62mm -
RS Stock No. 746-2868
Mfr. Part No.CJ1W-TC002
BrandOmron
$1,549.38
Each
units
CJ Series Temperature Control - Thermocouple PNP 4 4 5 V - - - - - -
RS Stock No. 609-8839
Mfr. Part No.TWDXCPMFK64
$219.86
Each
units
TWDLCA40DRF, TWDLMDA20DRT, TWDLMDA40DK, Twido Series Memory - - - - - - Yes 64 kB - - - -
RS Stock No. 146-046
Mfr. Part No.GRT1-PRT
BrandOmron
$631.10
Each
units
Profibus, SmartSlice I/O Units - - - - - - 24 V dc - - 90mm 58mm 70mm -
RS Stock No. 652-4085
Mfr. Part No.QJ71C24N-R2
BrandMitsubishi
$838.40
Each
units
MELSEC Q Series Interface - - - - - - - - 27.4mm 98mm 90mm -
RS Stock No. 746-6646
Mfr. Part No.6ES7332-5HB01-0AB0
BrandSiemens
$758.59
Each
units
S7-300 Series Output - - Analogue - 2 24 V dc - - 125mm 40mm 120mm -
RS Stock No. 746-2862
Mfr. Part No.CJ1W-TC101
BrandOmron
$1,325.59
Each
units
CJ Series Temperature Control - Thermocouple NPN 4 4 5 V - - - - - -
RS Stock No. 788-7019
Mfr. Part No.7MH4910-0AA01
BrandSiemens
$1,345.47
Each
units
ET 200 Series Weighing - - - - - - - - - - - -
RS Stock No. 489-2982
Mfr. Part No.AL2-2TC-ADP
BrandMitsubishi
$181.84
Each
units
Alpha 2 Series Analogue Extension - Thermocouple Type K 0 → 10 V 2 2 24 V dc - - 35.5mm 90mm 32.5mm -
RS Stock No. 146-068
Mfr. Part No.GRT1-DRT
BrandOmron
$526.60
Each
units
DeviceNet Communication, SmartSlice I/O Units DeviceNet Communications - - - - - 24 V dc - - 90mm 58mm 70mm -
RS Stock No. 834-7578
Mfr. Part No.7KM9300-0AE01-0AA0
BrandSiemens
$458.49
Each
units
- Communication - - - - - - - - 43mm 63mm 22mm -
RS Stock No. 815-5757
Mfr. Part No.FPG-XY64D2T
BrandPanasonic
$506.69
Each
units
FPG Series Sigma Expansion - Analogue Analogue 32 32 - - - 30mm 90mm 60mm -
RS Stock No. 806-7076
Mfr. Part No.TM3XTRA1
$209.55
Each
units
Modicon M2xx Communication - - - 12 8 24 V - - - - - -
RS Stock No. 810-4166
Mfr. Part No.6ES7241-1CH32-0XB0
BrandSiemens
$278.66
Each
units
S7-1200 Series Communication - RS232 RS422/485 1 - 24 V dc - - 100mm 30mm 75mm -
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