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3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Single-slot DeviceNet Master |
| Supported Baud Rates | 125 kbps, 250 kbps, 500 kbps |
| Maximum Slaves | 63 DeviceNet nodes |
| Data Transfer per Slave | 255 bytes input / 255 bytes output |
| Total Master Capacity | 3972 bytes input / 3972 bytes output |
| I/O Connections | Up to 126 (2 per slave) |
| Connection Types | Polled, Strobe, Cyclic, Change-of-State (COS) |
| Service Port | RS-232 9-pin D-shell (female) |
| DeviceNet Connector | 5-pin terminal (V+, CAN_H, Shield, CAN_L, V-) |
| Backplane Current | 450 mA @ +5 VDC |
| External DeviceNet Power | 12–24 VDC (network-supplied) |
| Mounting Location | Any Series 90-30 main rack slot except 0 and 1 |
| Compatibility | Series 90-30 (except CPU321/CPU340); also RX3i (IC694DNM200 equivalent) |
| Weight | Approx. 0.23 kg (0.50 lb) |
4. Product Introduction
The GE Fanuc IC693DNM200 is a single-slot DeviceNet Master module for the Series 90-30 PLC platform. It enables the PLC to act as a DeviceNet master, exchanging I/O data with up to 63 slave devices at standard baud rates of 125, 250, or 500 kbps. The module supports polled, strobe, cyclic, and change-of-state connections plus explicit messaging.
It maps up to 3972 bytes of input and 3972 bytes of output data into the PLC reference tables and includes a dedicated RS-232 service port for configuration and diagnostics. The IC693DNM200 installs in any main-rack slot except the power-supply and CPU positions and remains a common solution for maintaining existing DeviceNet networks on legacy Series 90-30 systems.
IC693DNM200
IC693DNM200
IC693DNM200
IC693DNM200
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| MOD STATUS LED off or red | Module not powered or fatal internal fault | ✅ High | Verify +5 VDC backplane voltage; reseat module | Power-cycle rack; if LED stays bad, replace module |
| NET STATUS LED red / Bus Off | Cable fault, missing termination, or excessive errors | ✅ High | Measure network voltage (11–25 VDC); check 120 Ω terminators at both ends | Inspect connectors, cable length vs. baud rate, and grounding |
| No I/O data exchange with slaves | Incorrect baud rate or node address mismatch | ✅ High | Confirm all nodes set to same baud; verify MAC IDs in configuration | Match baud rate and node addresses exactly; download corrected config |
| Intermittent communication | Poor shielding or power supply noise on DeviceNet | ✅ Medium | Check shield continuity and V+/V- voltage under load | Use proper DeviceNet thick/thin cable; separate power and signal grounding |
| Service port unresponsive | Wrong cable or baud setting on RS-232 | ❌ Low | Use standard 9-pin null-modem cable; verify terminal settings | Confirm pinout and software COM port settings before blaming module |
| CPU fault table shows module error | Configuration mismatch or unsupported CPU | ✅ Medium | Verify CPU is not 321 or 340; clear fault table | Use compatible CPU and correct EDS file; re-download hardware config |
If the network remains unstable after these checks, capture the module LED states, a screenshot of the DeviceNet configuration, and the PLC fault table, then contact technical support.
6. Frequently Asked Questions (FAQ)
Q: Is the IC693DNM200 still available new or is it obsolete? A: The Series 90-30 platform is mature. New factory production has ended. Available units are New Surplus or tested refurbished stock. Plan migration paths if the system is long-term critical.
Q: Can this module be installed in an expansion or remote rack? A: No. It must be installed in the main CPU rack only, in any slot except the power-supply (slot 0) and CPU (slot 1) positions.
Q: What baud rates and how many slaves does it support? A: It supports the three standard DeviceNet rates—125 kbps, 250 kbps, and 500 kbps—and up to 63 slave devices. Total I/O capacity is 3972 bytes in and 3972 bytes out.
Q: Does it work with PACSystems RX3i? A: Yes. The functionally equivalent RX3i catalog number is IC694DNM200. The same configuration principles apply, but always verify firmware compatibility with the specific CPU.
Q: Do I need special software to configure it? A: Configuration requires Machine Edition / Logic Developer (or equivalent). Older packages such as Logicmaster, Control, or VersaPro cannot configure the IC693DNM200. The Hand-Held Programmer also cannot be used for this module.
Q: What about termination and cabling? A: Install 120 Ω termination resistors at both physical ends of the DeviceNet trunk. Use only DeviceNet-rated thick or thin cable and observe the maximum length limits for the selected baud rate. Incorrect termination or cable type is the most common field failure mode.
Q: Why is New Surplus priced lower than original list? A: These are unused original modules pulled from OEM or distributor excess inventory. Each unit is visually inspected, powered on a genuine Series 90-30 rack, and functionally tested for DeviceNet communication before shipment. Test records are available on request.
