COM128 Installation and Operation Manual

Schneider Electric

3.2.2SPEED COMPENSATION

APPLICATION

For use with DCE devices that require very accurate baud rate input. Typical uses are with high speed dial up modems. This mode can be programmed to either ignore the Carrier Detect (CD) input of its RS-232 DTE port or require that CD be asserted by the DCE device before data is transmitted by the COM128 to the DCE device.

Mode

Port

Baud

SW1

SW2

SW3

SW4

SW5

SW6

 

 

 

 

 

 

 

 

 

Speed Compensation w/o Carrier Detect

DTE

1200

OFF

ON

ON

OFF

OFF

OFF

Speed Compensation w/o Carrier Detect

DTE

2400

ON

ON

ON

OFF

OFF

OFF

Speed Compensation w/o Carrier Detect

DTE

4800

OFF

OFF

OFF

ON

OFF

OFF

Speed Compensation w/o Carrier Detect

DTE

9600

ON

OFF

OFF

ON

OFF

OFF

Speed Compensation w/o Carrier Detect

DTE

19,200

OFF

ON

OFF

ON

OFF

OFF

Speed Compensation with Carrier Detect

DTE

1200

ON

ON

OFF

ON

OFF

OFF

Speed Compensation with Carrier Detect

DTE

2400

OFF

OFF

ON

ON

OFF

OFF

Speed Compensation with Carrier Detect

DTE

4800

ON

OFF

ON

ON

OFF

OFF

Speed Compensation with Carrier Detect

DTE

9600

OFF

ON

ON

ON

OFF

OFF

Speed Compensation with Carrier Detect

DTE

19,200

ON

ON

ON

ON

OFF

OFF

 

 

 

 

 

 

 

 

 

3.2.3RTS / CTS FLOW CONTROL

APPLICATION

This mode is used in conjunction with DCE devices which require hardware RTS / CTS handshaking. Typical uses are radio modems and multi-drop lease line modems with switched carriers.

RS-232 TO RS-485 DATA FLOW

The COM128 detects the start bit, or falling edge, of the first byte received by the RS-232 DTE port and sets all 4 RS-485 ports into Transmit mode. The COM128 continues to monitor the RS-232 DTE port for data and continues to pass data to the RS-485 port until there is no data coming in the RS-232 port.

RS-485 TO RS-232 DATA FLOW

The COM128 detects data received on any of the 4 RS-485 ports. The first byte is stored in an internal memory buffer and the Request To Send (RTS) output signal of the DTE RS- 232 port is asserted. The buffer size is 256 bytes. The COM128 continues to buffer bytes received from the RS-485 port and scans the RS-232 DTE ports' input signal Clear To Send (CTS). When the COM128 detects that CTS has been

asserted it starts to transmit the buffered data out the RS-232 DTE port. After the last byte in the buffer has been transmit- ted out the RS-232 DTE port the COM128 de-asserts the RTS signal and returns to the Idle State.

If CTS is not asserted after 256 bytes have been received from the RS-485 port a buffer overflow will occur. The COM128 de- asserts RTS and clears the buffer.

If CTS is not asserted within 256 byte times after the first byte has been received from the RS-485 port a time-out will occur. The COM128 de-asserts RTS and clears the buffer.

If CTS is de-asserted before the entire contents of the buffer have been transmitted out the RS-232 DTE port the COM128 de-asserts RTS and clears the buffer.

When in the RS-485 to RS-232 Data flow state the COM128 ignores any data received from its' RS-232 DTE port.

Mode

Port

Baud

SW1

SW2

SW3

SW4

SW5

SW6

 

 

 

 

 

 

 

 

 

 

 

RTS / CTS Flow control

DTE

1200

ON

OFF

OFF

OFF

OFF

OFF

 

RTS / CTS Flow control

DTE

2400

OFF

ON

OFF

OFF

OFF

OFF

 

RTS / CTS Flow control

DTE

4800

ON

ON

OFF

OFF

OFF

OFF

 

RTS / CTS Flow control

DTE

9600

OFF

OFF

ON

OFF

OFF

OFF

 

RTS / CTS Flow control

DTE

19,200

ON

OFF

ON

OFF

OFF

OFF

 

 

 

 

 

 

 

 

 

 

 

5

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PowerLogix COM128 installation and operation guide Speed Compensation

COM128 specifications

The PowerLogix COM128 is an advanced, high-performance communication module designed to facilitate robust and efficient data exchange in various applications. It is particularly favored in sectors such as industrial automation, smart grid systems, and telecommunication networks.

One of the main features of the COM128 module is its flexibility in communication protocols. It supports various standards including Modbus, CAN, and Ethernet/IP, which enables seamless integration into different systems. This adaptability is crucial for industries that employ diverse equipment and protocols, allowing the COM128 to serve as a single communication interface.

The COM128 also boasts impressive data transmission speeds, typically reaching up to 115.2 kbps, ensuring that even large volumes of data can be exchanged quickly and reliably. This is essential in environments where real-time data processing and timely decision-making are critical. The module is capable of handling multiple simultaneous connections, enhancing its efficiency and throughput.

In terms of technology, the COM128 is built on a compact and robust architecture that guarantees durability and longevity. It features advanced error detection and correction mechanisms, which help maintain data integrity during transmission. Additionally, the module is equipped with an integrated power management system that optimizes energy consumption, making it an eco-friendly choice for businesses looking to reduce their carbon footprint.

The characteristics of the PowerLogix COM128 further enhance its appeal. It is designed to operate in a wide range of environmental conditions, with an operational temperature range from -40°C to +85°C. This makes it ideal for deployment in harsh industrial settings where extreme temperatures can be a concern. Furthermore, the module is compact and lightweight, allowing for easy installation and integration into existing systems without the need for significant modifications.

A user-friendly interface accompanies the COM128, providing intuitive configuration options and diagnostics tools. This ease of use reduces the learning curve for engineers and technicians, thereby accelerating project implementation times.

In summary, the PowerLogix COM128 is a versatile and powerful communication module that meets the needs of various industries. With its multi-protocol support, high data transmission speeds, advanced technologies, and robust characteristics, it stands out as a reliable solution for efficient data communication in modern applications.