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SIEMENS 6ES5 314-3UA11
Product Name: Siemens 6ES5 314-3UA11 IM314 Expansion Unit Interface Module
Product Introduction: This module is part of the SIMATIC S5 system and provides expansion-unit bus interfacing between a central controller and remote I/O racks. It is installed on the expansion side and works with IM304 in the central controller rack.
Detailed content
Functional Features: Long-distance S5 expansion bus communication, DIP-switch rack addressing, dual-socket daisy-chain support, terminal resistor configuration, PWR/BUS/STATUS diagnostics, and compatibility with IM304 central interface.
Application Scenarios: Distributed S5-115U, S5-135U and S5-155U systems, steel and metals processing, chemical plants, remote I/O racks, large factory floors and legacy Siemens automation retrofit.
Performance Parameters: Compatible racks include EU 183U, EU 185U, EU 186U, ER 701-2 and ER 701-3. One IM304 central module can serve multiple expansion paths; IM314 supports up to four expansion units per configured port path according to system design. Address ranges P, Q, IM3 and IM4 are set by DIP switches.
Material Composition: S5 plastic/module housing, PCB, bus driver ICs, DIP switches, LED indicators, gold-plated backplane connector and terminal components.
Structural Characteristics: Single-slot S5 interface module with two bus sockets, enable switches, address switches and diagnostic LEDs.
Working Principle: IM314 receives S5 peripheral bus data from the central IM304 link, regenerates and distributes signals to the local expansion rack, and maintains addressed communication with remote I/O modules over shielded 721 cable.
Installation Requirements: Install in a compatible S5 EU/ER rack slot. Pair with IM304 in the central controller. Set rack address by DIP switch before power-on. Use 721 shielded cable for X3/X4 links. Install terminating resistor 6ES5 760-1AA11 on the last module of the chain.
Usage Precautions: Verify address ranges to prevent I/O address conflict. Do not operate outside 0°C to 60°C. Check cable shield grounding. Replace with same firmware-compatible S5 interface revision for existing distributed configuration.
