Simplicity and low cost attract users to Seriplex

Bus of the month


diagnostics on hundreds of I/O devices. Also, the company was looking for a system with a proven track record.

ct the approach of the next package. When the sensor spots the package, it signals the motorized roller to turn on, and then off once the package has passed. Each combination of motorized roller, slave rollers, and sensor is a 'zone,' in an application with more than 300 zones spread over several thousand feet.

dividual wires (four from the roller motor, four from the sensor) from each of the 300 zones to I/O blocks or directly to a programmable logic controller (PLC).

current reading that is above a preset limit. Or, the photosensor using built-in lens diagnostics communicates insufficient signal intensity, which could indicate a dirty lens.

Pulp and paper handling

..James River Corp. (Richmond, Va.)decided to install Seriplex in nearly all of its Dixie Division paper cup and plate manufacturing facilities. The system is designed to handle the discrete and analog I/O functions from the shop floor where paper cups are made and provide data to a materials tracking system.

ery good, but costwise they weren't competitive and they weren't flexible. And most are geared to their own product line. Seriplex Control Bus can be used with all kinds of devices. That was the major benefit.'

ation specific integrated circuit built in and connected directly to the network. Another option is to connect standard devices to intelligent I/O connection modules distributed near the sensors and motors.

ery time. The Seriplex Control Bus has been dubbed 'the electrician's network' because it can be easily installed and connected after a brief introduction.

..Seriplex Control Bus is a simple method of connecting control system input and output devices using a single cable. Introduced in 1990 after years of development and refinement, the Seriplex Control Bus today has over 750,000 I/O points installed over 2,000 installations. Users are involved in a broad range of industries including automotive manufacturing and assembly, entertainment, semiconductor fabrication, material handling, and paper processing.




  • Genuinely open membership with no stringent participation or other requirements;

  • Influence over future generations of Seriplex features;

  • Access to Seriplex support engineers, technical documentation, and specifications.

Source: Seriplex Control Bus catalog, produced by the Square D Company.

D-Line Contactor Adaptor Module

Raleigh, N.C.-- The LA4SPX providesan interface between the SeriplexControl Bus and any of the Teleme-canique D-Line contactors, sizes D09 through D80 (0.5 through 60 horse-power). The contactor snaps onto any Telemecanique D-Line contactor and switches control voltages up to 300 volts ac or 30 volts dc. LED indicators provide power-on, holding circuit and coil control output status. SQUARE D CO.

General-Purpose Relay

Raleigh, N.C.-- The Class 8501 Type SPX11 general-purpose relay provides an interface between the Seriplex Control Bus and a control output device. It has a single-pole, single-throw electromechanical relay output and available input address for optional alarm signaling back to the host controller. It also comes with a DIN rail mounting bracket or can be used as a panel mount module. SQUARE D CO.

Sensor Concentrator

Raleigh, N.C.-- The Sensor Concentrator is a designed interface between the Seriplex Control Bus and multiple micro-style quick change connector ports. The connector ports facilitate connections to 3-wire dc inductive proximity and photoelectric sensors through micro-style quick change connectors. Features include a durable enclosure rated NEMA Type 6 and IP67. It's fully powered by the bus with no need for a separate power supply for input devices. SQUARE D CO.

Analog I/O Modules

Version 2.0 Analog I/O modules have an on- board A/D converter, which converts an analog signal to a binary value, then places the signal on the Seriplex Control Bus. Analog output modules have an on-board D/A converter, which takes the binary Seriplex Control Bus signal and converts it to an equivalent analog output value. Operating voltage is 24 V dc or 12 V dc and the temperature range is -25 to 70 °C. SQUARE D CO.

Discrete I/O Module

Raleigh, N.C.-- Universal discrete I/O modules provide an interface between the Seriplex Control Bus and most real world I/O. Single-bit bus interface circuitry is used in these modules, and if multiplexed operation is used by the controller card, these modules are scanned every frame. LED indicators provide power-on status and input/ output status. Inputs available include AC Type 1, DC Type 2, and Hard Contact. All modules provide 2 in-puts and/or 2 outputs. SQUARE D CO.

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