1. SCB MODULE

The SCB circuit is used to generate the read, write, and address data necessary to transfer control and status data to and from the SCB bus. The SCB address is configured externally via SW1 and is selectable between 1 and 36. The SCB circuit also communicates to the Common Module the following information: Card Type (117), number of configuration bytes, and number of status bytes.

In LOCAL mode the position of configuration switches (SW1 through SW9) are “read” by the Common Module, and then converted into standard P code and S code format.

In REMOTE mode, the NCM module does not rely on the position of configuration switches (SW2 through SW9). Instead, the Common Module “writes” the configuration to the NCM. The NCM requires that it receives exactly the same information three consecutive times before it accepts the updated configuration information as correct.

NCM “Service” is qualified in order to minimize user setup error, and prevents operation if the quality of the bus signal prevents the logic from determining whether the multiplexer is T1 or E1. In general, E1 does not allow the use of TS0 and TS16 if CAS is enabled, and T1 does not allow the setting of TS0 or any setting greater than TS24. It is the users responsibility to be aware of the network setup before selecting a channel to use. This qualification does not detect or prevent “stepping” on a time slot previously in use, including those that may be used for Fast Reframing, or network communications (NMX in E1). NCM “Service” is also qualified for non-existent and invalid modes of operation.

2. APPLICATION MODES AND INTERFACES

NCM operation depends on the selected Application Mode, and the type of I/O interface installed. The NCM uses an I/O type ID to determine which I/O is installed. If the installed I/O is the MA-485, an additional bit is used to indicate whether it includes one or two ports. The two port version does not currently exist.

The NMS includes the following Application Mode settings, and I/O types

Application Mode settings

NMS Mode

Broadcast Mode

Master Mode

D&I Slave Mode

End Slave Mode

The purpose of the NMS Mode is to provide a high-speed communication path between nodes for NMS. The other application modes provide a communication path between an MTU and several RTUs. The NMS Mode of operation requires the use of the MA-402I with two RS-232 ports, or the MA-490 with two RS-232 ports and an Ethernet port. In respect to the NCM, Port 1 is the “Local” port and Port 2 is the “CM” port. The additional RS-232 port on the MA-490 is used to configure the local Ethernet Port. The NMS mode is a Broadcast-type application but includes “Address Passing” and “Character Pacing” circuits for the “CM” port.

RFL NCM

 

RFL Electronics Inc.

November 6, 2007

23

(973) 334-3100

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RF-Link Technology Network Communications Module, RFL NCM manual SCB Module, Application Modes and Interfaces
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Network Communications Module, RFL NCM specifications

RF-Link Technology has emerged as a significant player in the realm of wireless communication, and one of its standout offerings is the RFL NCM (Network Communications Module). This module is designed to facilitate efficient and reliable data transmission in a variety of applications, making it a versatile solution for both industrial and commercial needs.

The RFL NCM is built on advanced RF technologies that support multiple communication protocols, ensuring compatibility with different systems and devices. One of its main features is its exceptional range. The module is capable of transmitting data over long distances, making it ideal for applications where devices are spread out. This long-range capability is essential for remote monitoring and control tasks, such as in smart agriculture, environmental monitoring, and industrial automation.

Another defining characteristic of the RFL NCM is its low power consumption. The module employs energy-efficient communication methods, enabling devices to operate for extended periods without frequent battery replacements. This makes it particularly useful in applications where power availability is limited or where continuous operation is required without maintenance interruptions.

The RFL NCM supports a variety of communication protocols, including LoRa, Zigbee, and MQTT, providing flexibility for developers and integrators to choose the most suitable technology for their specific applications. Its robust design ensures resilience in various operating conditions, including extreme temperatures and potential environmental hazards like moisture and dust.

Ease of integration is another strong point of the RFL NCM. With extensive documentation and support, developers can quickly incorporate the module into their existing systems. It also features built-in security protocols to safeguard data during transmission, which is particularly important in today’s increasingly connected world where data breaches are a growing concern.

The RFL NCM is not just about performance; it inherently supports scalability, allowing users to expand their network as their needs grow, whether that's adding more sensors to a monitoring system or integrating additional devices in a smart home. This commitment to both performance and adaptability makes the RFL NCM an attractive option for developers looking to harness the power of RF communications.

In summary, the RF-Link Technology RFL NCM stands out due to its long-range capabilities, low power consumption, support for multiple communication protocols, and robust integration features. With applications across various sectors, including industrial, commercial, and residential, this module promises to enhance connectivity and streamline operations in an increasingly wireless world.
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