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. 801-7485
Mfr. Part No.2861331
$53.16
Each
units
- Inline Power Terminal - - - - - 24 V dc - - 119.8mm 12.2mm 71.5mm -
RS Stock No. 801-7466
Mfr. Part No.2703981
$831.64
Each
units
Modbus/TCP(UDP) Protocol Bus Coupler - Digital Digital 8 4 24 V dc - - 119.8mm 80mm 71.5mm -
RS Stock No. 801-7652
Mfr. Part No.2861399
$366.59
Each
units
Analogue Actuators Inline Analogue Output Terminal Block - - Analogue 2 1 24 V dc - - 136.8mm 12.2mm 71.5mm -
RS Stock No. 124-3331
Mfr. Part No.2702233
$2,773.65
Each
units
Field Devices Ethernet HART Multiplexer - Digital Digital - - 0 → 30 V dc, 24 V dc - - 22.5mm 114.5mm 99mm Ethernet Network
RS Stock No. 801-7491
Mfr. Part No.2861467
$565.03
Each
units
- Inline Analogue Output Terminal Block - - Analogue - 2 24 V dc - - 136.8mm 12.2mm 71.5mm -
RS Stock No. 801-7567
Mfr. Part No.2862835
$565.03
Each
units
- - - - - - - - - - - 48.8mm - -
RS Stock No. 124-3329
Mfr. Part No.2701000
$680.98
Each
units
Inline Station Inline Function Terminal - Analogue RTD - 8 - 24 V dc - - 140.5mm 48.8mm 71.5mm I/O System
RS Stock No. 742-6850
Mfr. Part No.2861302
$486.26
Each
units
- Input Terminal - Analogue - 2 - 0 → 10 V - - 136.8mm 12.2mm 71.5mm -
RS Stock No. 801-7441
Mfr. Part No.2861250
$318.12
Each
units
- - - - - - - - - - - 48.8mm - -
RS Stock No. 124-3346
Mfr. Part No.2904473
$541.99
Each
units
Interface System Devices Extension Module - Digital Digital 8 4 24 V dc - - 22.5mm 114.5mm 99mm Motor Management
RS Stock No. 801-7450
Mfr. Part No.2861292
$388.92
Each
units
- - - - - - - - - - 140.5mm 48.8mm - -
RS Stock No. 124-3332
Mfr. Part No.2702234
$1,010.38
Each
units
PL GW ETH-BUS Head Station Four-Channel HART Expansion Module - Digital Digital - - 0 → 30 V dc, 24 V dc - - 22.5mm 114.5mm 99mm Modular Gateway Station
RS Stock No. 801-7481
Mfr. Part No.2861276
$162.09
Each
units
- - - - - - - - - - - 12.2mm - -
RS Stock No. 124-3338
Mfr. Part No.2702321
$1,822.33
Each
units
Field Devices Ethernet HART Multiplexer - Digital Digital - - 0 → 30 V dc, 24 V dc - - 22.5mm 114.5mm 99mm Ethernet Network