GE IC693CMM311
GE IC693CMM311 - Image 2

GE IC693CMM311

  • Product Introduction: This is a single-port RS-232 serial communication module designed for the GE Fanuc 90-30 PLC platform. It enables the PLC to communicate with external devices such as HMI panels, barcode scanners, printers, modems, and PCs using the standard RS-232 protocol. The module plugs directly into the 90-30 backplane bus and provides one full-duplex serial port with configurable baud rates, data bits, parity, and stop bits. It is widely deployed in legacy automation systems, SCADA interfaces, and data logging applications where serial communication remains the standard.
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Category: SKU: GE IC693CMM311

Description

GE IC693CMM311

  • Technical Specifications:
    • Communication Ports: 1 RS-232 serial port (DB-9 male connector)
    • Protocol: RS-232C (full-duplex, asynchronous)
    • Baud Rates: 110, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps (software selectable)
    • Data Format: 7 or 8 data bits, even/odd/no parity, 1 or 2 stop bits
    • Voltage Levels: standard ±12V typical (driver/receiver IC)
    • Cable Length: Up to 15 meters (50 feet) at 19200 baud
    • Isolation: 500V RMS optical isolation from backplane bus
    • Power Consumption: ~1.5W
    • Operating Temperature: 0°C to 60°C (32°F to 140°F)
    • Dimensions: Standard IC693 half-width module (approx. 120mm x 65mm x 130mm)
  • Functional Features:
    • Single RS-232 port with full-duplex transmit and receive
    • Software-configurable communication parameters via GEPORT or logic
    • Supports ASCII and RTU (Modbus RTU) framing modes
    • Hardware handshaking: RTS/CTS, DTR/DSR available
    • On-board LED indicators: Power (green), Transmit (amber), Receive (amber)
    • Compatible with 90-30 CPU firmware versions 4.0 and later
    • Supports DPM (Direct Port Memory) for fast data transfer without CPU scan cycle dependency
  • Application Scenarios:
    • Connecting to operator terminals and text-based HMIs
    • Barcode scanner and label printer integration on packaging lines
    • Modem communication for remote diagnostics and data upload
    • PC-to-PLC data exchange for configuration and monitoring
    • Legacy equipment serial protocol bridging
    • Weight scale and flow meter data acquisition
  • Performance Parameters:
    • Maximum Throughput: 57600 bps at 8N1 configuration
    • Latency: Less than 1ms per character at 9600 baud
    • Error Detection: Parity bit and framing error flags
    • Isolation Voltage: 500V RMS between field port and backplane logic
    • EMI Immunity: IEC 61000-4-2 Level 3 (8kV contact discharge)
  • Material Composition:
    • Housing: UL94 V-0 flame-retardant polycarbonate/ABS blend
    • PCB: 4-layer FR-4 glass epoxy with conformal coating
    • Connector: DB-9 male, gold-plated pins, tin-plated shell
    • Isolation Components: High-speed opto-isolators (6N137 or equivalent)
    • Driver IC: MAX232 or equivalent level shifter
  • Structural Features:
    • Half-width IC693 module form factor
    • Backplane edge connector with keying for correct orientation
    • Front panel: 3 LEDs (Power, TX, RX)
    • DB-9 connector on front panel for field wiring
    • DIN-rail mountable or chassis-mounted in IC693 rack
  • Working Principle:
    • The CPU writes data to the module’s DPM buffer via the Genius Bus. The on-board UART (Universal Asynchronous Receiver/Transmitter) converts parallel data from the bus into serial bitstream. The RS-232 driver IC converts TTL-level signals to ±12V RS-232 voltage levels. Received serial data is converted back to TTL by the receiver IC, then stored in the DPM buffer for the CPU to read. Optical isolation separates the field port from the backplane bus to prevent ground loops and voltage spikes.
  • Installation Requirements:
    • Mount in any available IC693 slot in a 90-30 chassis (IC693CHS, IC693ACC, etc.)
    • Connect DB-9 cable to field device (straight-through or null-modem depending on device)
    • Use shielded serial cable (max 15m for reliable communication at higher baud rates)
    • Connect cable shield to chassis ground at one end only
    • Configure baud rate, data bits, parity in PLC logic before first use
  • Usage Precautions:
    • Do not exceed 15 meters cable length at baud rates above 19200 — signal degradation will cause errors
    • Verify device uses voltage levels — RS-422/485 devices require a different module (IC693CMM321)
    • Do not connect RS-232 port directly to a PC without a null-modem adapter if required
    • Ensure ground reference is common between PLC and field device to avoid floating voltages
    • Do not hot-swap the module — power down the rack before insertion or removal
    • Set correct parity and stop bits in software — mismatched settings cause silent communication failures

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