ABB Bailey 1948605A1 Serial Interface Module

Communication Capabilities and Data Exchange

The ABB Bailey 1948605A1 enables serial communication between Bailey controllers and peripheral devices. This module connects to printers, terminals, and host computers reliably. It converts parallel system data into serial transmission formats.

Technical Specifications

Parameter	Specification
Model	1948605A1
Category	Serial Interface Module
Height	267 mm
Width	30 mm
Depth	185 mm
Weight	0.48 kg
Serial Ports	2 x RS-232-C
Baud Rate Range	110 to 19200 bps
Data Format	7 or 8 bits, 1 or 2 stop bits
Parity	None, odd, or even
Connector Type	2 x DB25 female
Status Indicators	4 x LEDs (TX, RX, RTS, CTS per port)
Internal Components	1 UART chip, 2 line drivers, 2 receivers, 1 oscillator
Energy Storage	None (no battery or capacitor)

Internal Architecture and Signal Processing

The 1948605A1 contains five primary internal components for serial communication. One UART chip handles parallel-to-serial data conversion. Two line drivers boost signal levels for RS-232 transmission. Two receivers convert incoming RS-232 signals to logic levels. A crystal oscillator generates precise timing for all baud rates. The ABB Bailey 1948605A1 includes two DB25 connectors on the front panel.

Communication Configuration and Setup

Configure each port’s baud rate using the onboard DIP switches. Select 7 or 8 data bits for each channel independently. Set the parity to none, odd, or even through software settings. The 1948605A1 supports full-duplex communication on both ports simultaneously. Four status LEDs per port show transmit, receive, and handshake activity. The module sends data to printers or receives from host computers.

Physical Dimensions and Installation Guidelines

The ABB Bailey 1948605A1 weighs only 0.48 kilograms for easy handling. Its height measures 267mm, width 30mm, and depth 185mm. This serial interface module consumes 2.2 watts from the backplane supply. Install the 1948605A1 in any standard Bailey rack slot. The module operates reliably from 0°C to +60°C ambient temperature.

Energy Storage and Maintenance Status

The 1948605A1 stores no electrical energy internally. It includes zero batteries or high-value capacitors. Hence, this interface module requires no scheduled battery replacements. You will never experience data loss from power failures. The module contains no moving parts for maximum reliability.