SPECIFICATIONS
Part No.: IC693CMM311R
Manufacturer: General Electric
Product Type: Communications Coprocessor Module
Availability: In Stock
Internal Power: 400 mA
Port 1: Supports RS-232
Port 2: Supports either RS-232 or RS-485
Series: VersaMax
Functional Description
IC693CMM311R is a communications coprocessor module developed by GE Fanuc. It is designed to enhance the communication capabilities of Series 90-30 modular CPUs. This module offers a high-performance processor specifically for these CPUs but is not compatible with embedded CPU models such as 311, 313, or 323.
Supported Communication Protocols
- GE Fanuc CCM (Control Communication Module): This is a proprietary protocol designed for communication between GE Fanuc devices. It allows to seamlessly integrate with other GE Fanuc components in a control system, ensuring smooth data exchange and coordination.
- SNP (Series Ninety Protocol): The SNP protocol is used primarily for communication between GE Fanuc Programmable Logic Controllers (PLCs). This enables the module to interact with PLCs across the Series 90-30 system, providing the flexibility to build more comprehensive automation solutions.
- RTU (Remote Terminal Unit) Modbus Slave: Modbus RTU protocol allows communication between various devices such as RTUs, sensors, and controllers. As a Modbus slave, the module can efficiently receive data and execute commands within a Modbus network.
Features
- The module can be configured using specialized configuration software, allowing users to tailor the setup to their specific needs. For those seeking a simpler installation process, a default setup option is also available.
- Part of a broader range of communication modules available for the Series 90-30 platform. One notable module is the Programmable Coprocessor Module (PCM), a high-performance microcomputer that can be programmed in MegaBasic or C. This module is particularly useful for interfacing with devices such as Bar Code Readers, RTUs, and other ASCII devices, further expanding the capabilities of the system.
Serial Ports and Connectivity
The serial ports are integral to the CMM board’s communication capabilities, supporting data transfer and module configuration. If the Restart/Reset pushbutton is pressed while the Module OK LED is on, the CMM board will reset and re-initialize using the Soft Switch Data settings. This feature allows for a quick reset without needing to power down the entire system.
Equipped with two serial ports:
- Port 1: Dedicated to RS-232 applications, a standard for serial communication transmission of data.
- Port 2: Capable of supporting either RS-232 or RS-485 applications. RS-485 is particularly useful for longer-distance communication and in environments where electrical noise might interfere with communication.
- Both ports are connected to a single connector on the module. To facilitate easier wiring, the module comes with a Y-cable (IC693CBL305), which separates the two ports, simplifying the installation and ensuring that the system is organized and efficient.
System Integration and Compatibility
- Multiple Module Support: A system with a CPU model 331 or higher can accommodate up to four IC693CMM311 modules. These modules are installed via the CPU baseplate, enabling scalable communication capabilities within the system.
- Datagram Management: In versions prior to 4.0, the module had a unique issue when both ports were configured as SNP slave devices. If a Cancel Datagram request with an ID value of -1 was received at either port, it would cancel all established datagrams on both ports within the same module. This behavior differed from the CMM711 module, where datagrams on separate serial ports did not interact. However, this issue was addressed and resolved in version 4.0, released in July 1996. For users with older versions of the module that experience this issue, repair services are available.
LED Indicators
- The Module OK LED on the CMM board provides key insights into its operational status. This LED can be in one of three states, each indicating a different condition of the module:
- Off: When the LED is off, it signals that the CMM board is not functioning. This typically indicates a hardware malfunction, such as a failed diagnostic check, a module failure, or the absence of the PLC. When the LED is off, corrective action is required to bring the CMM back into operational status.
- On: A steady "On" state signifies that the CMM board is operating correctly. This is the normal, expected state, indicating that the module has successfully passed all diagnostic tests and that its configuration data is valid. During routine operation, this LED should remain steadily on.
- Flashing: A flashing LED during power-up indicates that the system is running its diagnostic checks. This temporary state is expected when the module first powers up, as it verifies operational readiness.
- Alongside the Module OK LED, the CMM board features two Serial Port LEDs that provide a visual indication of data activity on the module’s two serial ports. These LEDs are labeled PORT1 and PORT2 (or US1 and US2 on the Series 90-30 CMM311), each representing a specific port’s activity:
- PORT1 (US1): This LED blinks whenever data is transmitted or received on serial port 1, showing real-time activity for monitoring.
- PORT2 (US2): This LED blinks to signal data transmission or reception on serial port 2. Blinking indicates that data is actively moving through the port.
- These Serial Port LEDs allow for immediate visual confirmation of data flow, helping users monitor communication across the system and verify that each port is functioning as expected.
The WOC team is always available to help you with your Mark I and II requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IC693CMM311R?
It is a Communications Coprocessor Module developed by GE under VersaMax series.
What is the purpose of the Y-cable supplied with the module?
The Y-cable is provided to separate the two serial ports from the single connector on the module. This separation simplifies wiring and makes it easier to organize and connect the module within the system.
Can I configure the module?
Yes, it can be configured using specialized configuration software. For users who prefer a simpler setup, the module also offers a default configuration option.
What was the issue with older versions of the module, and how was it resolved?
In versions before 4.0, the module had an issue where both ports, when configured as SNP slave devices, would cancel all established datagrams on both ports if a Cancel Datagram request with an ID value of -1 was received. This issue was resolved in version 4.0, released in July 1996. Users with older versions can contact repair services for assistance.
What are the power requirements for the module?
The module requires an internal power supply of 400 mA at 5 VDC.
