Turck BL20-1RS232 Modular Digital Input Module

Description:

The Turck BL20-1RS232 serial communication module is used in BL20 distributed I/O and industrial communication systems. Commonly installed in packaging machinery, conveyor systems, barcode scanning stations, printing systems, and manufacturing equipment requiring RS232 serial communication between field devices and PLC networks. Maintenance teams, OEMs, and system integrators use this part for communication upgrades, machine retrofits, serial device integration, and replacement of existing interface modules.

Applications:

The Turck BL20-1RS232 provides a serial communication interface between the BL20 modular I/O platform and RS232 devices in industrial automation environments. It is commonly used for connecting barcode scanners, printers, weighing systems, operator terminals, light curtains, and legacy serial equipment to modern PLC and fieldbus networks. The modular BL20 architecture allows the interface module to operate independently of the selected fieldbus protocol while simplifying system expansion and maintenance.

Technical Specifications:

• Brand: Turck
• Part Number: BL20-1RS232
• Manufacturer Part Number (MPN): 6827169
• Product Type: RS232 Serial Communication Module
• Series: BL20 Modular I/O System
• Function: Serial device communication interface
• Number Of Channels: 1 RS232 interface
• Communication Protocol: RS232
• Transmission Mode: Full duplex
• Data Transmission Rate: 300 to 115200 bps
• Supported Signals: RxD, TxD, RTS, CTS
• Receive Buffer Size: 128 bytes
• Transmit Buffer Size: 64 bytes
• Supply Voltage: 24 VDC via BL20 backplane bus
• Typical Power Consumption: ≤1 W
• Connection Type: Screw terminal or cage clamp terminal via base module
• Mounting Type: Plug-in module for BL20 base system
• Electrical Isolation: Galvanic isolation through optocouplers
• Diagnostic Features: Status and diagnostic LEDs
• Protection Rating: IP20
• Operating Temperature: 0°C to +55°C
• Storage Temperature: -25°C to +85°C
• Dimensions: 12.6 × 74.1 × 55.4 mm
• Approvals: CE, cULus, Class I Division 2, Zone 2
• Application: Connection of barcode scanners, printers, light curtains, HMIs, and serial devices to industrial control systems.

Common Replacements:

• Turck BL20-1RS485/422
• Turck BL67-1RS232
• Turck BL20-1SSI