Schneider KOS 202A | TSX Compact Communication Module

The KOS 202A handles MAP 3.0 communication for Modicon TSX Compact systems. This module connects your PLC to manufacturing automation protocol networks. It manages all seven layers of the MAP protocol stack independently. Consequently, your CPU focuses entirely on control logic execution.

You can integrate this module into any TSX Compact rack slot. The KOS 202A supports token bus networks at 5 Mbit/s transmission rates. It also provides diagnostic functions for network troubleshooting and monitoring. Therefore, engineers gain reliable connectivity for factory-wide automation systems.

Physical Architecture and Processing Capability

The module includes a dedicated 16-bit processor for protocol handling. This processor manages token passing, data encapsulation, and error recovery. The KOS 202A incorporates 128 KB of dual-port RAM for data exchange. A separate 64 KB of EPROM holds the MAP firmware permanently.

The module stores configuration parameters in non-volatile EEPROM memory. The KOS 202A retains all settings after a complete power cycle. It draws all operating power directly from the backplane bus. Below is a complete breakdown of its technical characteristics.

Specification	Detail
Product Type	TSX Compact Communication Module
Network Protocol	MAP 3.0 (Manufacturing Automation Protocol)
Transmission Rate	5 Mbit/s (Token bus)
Interface Type	9-pin D-sub female (Thin-wire Ethernet)
Dual-Port RAM	128 KB (Shared with CPU)
Firmware Memory	64 KB EPROM
Configuration Memory	8 KB EEPROM (Non-volatile)
Processor	16-bit (80C186 compatible)
Dimensions (W x H x D)	40 mm x 130 mm x 120 mm
Weight	0.35 kg (350 grams)
Power Consumption (5V)	350 mA
Power Consumption (24V)	100 mA
Energy Storage	None (EEPROM only)

Interface Layout and Connection Options

A single 9-pin D-sub female connector provides the network interface. The KOS 202A uses standard thin-wire Ethernet coaxial cable for connections. Three status LEDs indicate RUN, COMM, and ERROR conditions on the front. An 8-position DIP switch sets the node MAC address.

This module requires an external terminator at each network end. The KOS 202A includes onboard transceiver circuits for signal conditioning. It fits into any standard TSX Compact 4-slot or 8-slot rack. Therefore, installation follows the same procedure as other I/O modules.

Operational Benefits for Legacy Networks

This communication module enables MAP-based data exchange between PLCs. The KOS 202A supports messaging with supervisory computers and other controllers. It also provides a gateway to higher-level manufacturing execution systems. Engineers value this module for maintaining older factory automation networks.