Allen-Bradley 1738-232ASCM12 ArmorPOINT I/O RS-232 ASCII Communication Module
Allen-Bradley 1738-232ASCM12 ArmorPOINT I/O RS-232 ASCII Communication Module
Allen-Bradley 1738-232ASCM12 ArmorPOINT I/O RS-232 ASCII Communication Module
    Allen-Bradley 1738-232ASCM12 ArmorPOINT I/O RS-232 ASCII Communication Module
Allen-Bradley 1738-232ASCM12 ArmorPOINT I/O RS-232 ASCII Communication Module

Allen-Bradley 1738-232ASCM12 ArmorPOINT I/O RS-232 ASCII Communication Module

Part #: 1738-232ASCM12 Manufactured by: Allen-Bradley
$725.00
$725.00
4 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
The 1738-232ASCM12 is an ArmorPoint I/O module that enables ASCII-based RS-232 communication with external devices in dist...  Read more
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Product Description P/N: 1738-232ASCM12

Description / Specifications

Description 

The Allen-Bradley 1738-232ASCM12 is an ArmorPoint I/O RS-232 ASCII module designed for serial communication applications in distributed control systems. It provides one full duplex input for ASCII data handling and operates at a nominal 24 Volts DC supply.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLCs / Machine Control
Part Number 1738-232ASCM12
Subcategory Distributed I/O Communication Module
Manufacturer Rockwell Automation
Series ArmorPOINT I/O
Product Type RS-232 ASCII Communication Module
Communication Interface RS-232 Full-Duplex ASCII
Input Channels 1 Full-Duplex Channel
Supply Voltage 24 VDC Nominal
Supply Current 15 mA @ 24 VDC
PointBus Current 75 mA @ 5 VDC (Maximum)
Maximum Power Dissipation 0.75 W @ 28.8 VDC
Maximum Thermal Dissipation 2.5 BTU/hr @ 28.8 VDC
Isolation Voltage 50 V Continuous
Enclosure Rating IP67
Connector Type M12
Operating Temperature -20°C to +60°C (-4°F to +140°F)
Storage Temperature -40°C to +85°C (-40°F to +185°F)
Dimensions (H × W × D) 31.76 × 66.8 × 107.95 mm (1.25 × 2.63 × 4.25 in.)
Weight Approximately 0.20 kg (0.44 lb)

  

 

Information About 1738-232ASCM12

The 1738-232ASCM12 is part of the ArmorPoint I/O series from Allen-Bradley, developed to connect RS-232 ASCII devices directly into distributed control systems without additional enclosures, thanks to its IP67-rated housing. It supports data strings of up to 128 bytes and transaction IDs from 0 to 255, ensuring flexible communication with external serial devices. The module comes with a sealed M12 connector for rugged environments, provides status feedback through multiple LED indicators, and features robust electrical isolation rated at 50 Volts continuous and tested to 1250 Volts AC RMS. With a low supply current of 15 mA at 24 VDC and a maximum power dissipation of 0.75 W, it ensures energy-efficient performance while maintaining reliability across a wide operating temperature range of -20 to 60 °C.

Key Features:

  • Housing: IP67-rated design eliminates the need for protective enclosures in harsh environments.
  • Input Channel: Provides one full duplex RS-232 ASCII input for direct serial communication.
  • Data Handling: Supports transmit strings up to 128 bytes and transaction IDs from 0 to 255.
  • Power Requirements: Operates at 24 VDC nominal with a supply current of 15 mA.
  • Bus Consumption: Draws up to 75 mA from the 5 VDC PointBus for system integration.
  • Energy Efficiency: Maximum power dissipation of 0.75 W and thermal dissipation of 2.5 BTU/hr.
  • Electrical Protection: Isolation voltage of 50 V continuous, tested at 1250 V AC RMS for 60 seconds.
  • Indicators: Includes green/red module and network status LEDs, plus TXD/RXD activity indicators.
  • Environmental Ratings: Operates from -20 to 60 °C with storage capability down to -40 °C and up to 85 °C.

The 1738-232ASCM12 delivers the reliability and precision required for distributed control systems and serial device integration in industrial automation.

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Frequently Asked Questions about 1738-232ASCM12
Question: What is the Allen-Bradley 1738-232ASCM12 used for?
Date Update:28/05/2025
Answer:

The 1738-232ASCM12 is an RS-232 ASCII interface module from the ArmorPoint I/O family. It allows a controller to communicate with serial devices using ASCII protocol over a full-duplex communication channel. This enables integration with barcode scanners, printers, and other ASCII-based equipment. It is commonly used in industrial automation for serial communication bridging.

Question: Does the 1738-232ASCM12 require an enclosure?
Date Update:28/05/2025
Answer:

No, it comes with an IP67-rated sealed housing, making it resistant to dust and water ingress. This allows the module to be mounted directly in the field without needing a protective enclosure. It is ideal for harsh or exposed industrial environments such as packaging lines or factory floors.

Question: Is the module isolated?
Date Update:28/05/2025
Answer:

Yes, it features 50V continuous isolation voltage, helping protect internal circuitry from electrical interference or voltage spikes. The isolation is tested to 1250V AC RMS for 60 seconds. This ensures reliable operation even in electrically noisy environments.

Question: What are the physical dimensions of the module?
Date Update:28/05/2025
Answer:

The 1738-232ASCM12 has a compact form factor with dimensions of 31.76 x 66.8 x 107.95 mm (1.25 x 2.63 x 4.25 in). Its size supports space-efficient deployment in distributed I/O networks. Despite its small size, it’s robust enough for field use.

Question: Is there a recommended Rockwell replacement for this module?
Date Update:28/05/2025
Answer:

No, Rockwell Automation has not announced a direct replacement. Customers must evaluate alternatives such as third-party serial gateways or other I/O interface strategies. Careful review of project requirements is recommended for selecting substitutes.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1738-232ASCM12 is an ArmorPoint I/O RS-232 ASCII module designed for serial communication applications in distributed control systems. It provides one full duplex input for ASCII data handling and operates at a nominal 24 Volts DC supply.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLCs / Machine Control
Part Number 1738-232ASCM12
Subcategory Distributed I/O Communication Module
Manufacturer Rockwell Automation
Series ArmorPOINT I/O
Product Type RS-232 ASCII Communication Module
Communication Interface RS-232 Full-Duplex ASCII
Input Channels 1 Full-Duplex Channel
Supply Voltage 24 VDC Nominal
Supply Current 15 mA @ 24 VDC
PointBus Current 75 mA @ 5 VDC (Maximum)
Maximum Power Dissipation 0.75 W @ 28.8 VDC
Maximum Thermal Dissipation 2.5 BTU/hr @ 28.8 VDC
Isolation Voltage 50 V Continuous
Enclosure Rating IP67
Connector Type M12
Operating Temperature -20°C to +60°C (-4°F to +140°F)
Storage Temperature -40°C to +85°C (-40°F to +185°F)
Dimensions (H × W × D) 31.76 × 66.8 × 107.95 mm (1.25 × 2.63 × 4.25 in.)
Weight Approximately 0.20 kg (0.44 lb)

  

 

Information About 1738-232ASCM12

The 1738-232ASCM12 is part of the ArmorPoint I/O series from Allen-Bradley, developed to connect RS-232 ASCII devices directly into distributed control systems without additional enclosures, thanks to its IP67-rated housing. It supports data strings of up to 128 bytes and transaction IDs from 0 to 255, ensuring flexible communication with external serial devices. The module comes with a sealed M12 connector for rugged environments, provides status feedback through multiple LED indicators, and features robust electrical isolation rated at 50 Volts continuous and tested to 1250 Volts AC RMS. With a low supply current of 15 mA at 24 VDC and a maximum power dissipation of 0.75 W, it ensures energy-efficient performance while maintaining reliability across a wide operating temperature range of -20 to 60 °C.

Key Features:

  • Housing: IP67-rated design eliminates the need for protective enclosures in harsh environments.
  • Input Channel: Provides one full duplex RS-232 ASCII input for direct serial communication.
  • Data Handling: Supports transmit strings up to 128 bytes and transaction IDs from 0 to 255.
  • Power Requirements: Operates at 24 VDC nominal with a supply current of 15 mA.
  • Bus Consumption: Draws up to 75 mA from the 5 VDC PointBus for system integration.
  • Energy Efficiency: Maximum power dissipation of 0.75 W and thermal dissipation of 2.5 BTU/hr.
  • Electrical Protection: Isolation voltage of 50 V continuous, tested at 1250 V AC RMS for 60 seconds.
  • Indicators: Includes green/red module and network status LEDs, plus TXD/RXD activity indicators.
  • Environmental Ratings: Operates from -20 to 60 °C with storage capability down to -40 °C and up to 85 °C.

The 1738-232ASCM12 delivers the reliability and precision required for distributed control systems and serial device integration in industrial automation.

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