PMC5565 VMIC-5565

[Product Overview]

The fiber-optic reflective memory interface board is primarily used for high-speed data transmission between devices. Multiple interface boards can be networked to form a real-time fiber-optic reflective memory network.

A real-time fiber-optic reflective memory network is formed by connecting fiber-optic interface boards installed in computers via fiber-optic cables, creating a ring network. The onboard memory of each node's fiber-optic interface board contains a copy of shared data from other nodes. Logically, all nodes in the network share the same memory. Data written at one point is simultaneously updated at multiple points, enabling high-speed data transmission and sharing. Compared to traditional networking technologies, it offers strict transmission determinism and high data transfer speeds, along with simple communication protocols, low host load, and strong adaptability to both hardware and software platforms.

 

[Fiber Port Definitions and Onboard Indicators]

 

As shown in the figure above, TX is the data transmission port; RX is the data reception port.

 

As shown in the figure above, the indicators are: RX: data reception status indicator; TX: data transmission status indicator; TRAN: PCI bus data transmission status indicator; LOS: optical link failure indicator.

[Fiber-Optic Reflective Memory Network Connection Methods]

Self-loopback Test Mode

As shown in the figure below, connect the TX and RX ends of the fiber-optic transceiver module on the fiber-optic reflective memory interface board using a single fiber-optic cable to complete the network setup.

 

Multi-Board Ring Network Mode

As shown in the figure below, a fiber-optic network is formed by connecting the TX and RX ends of multiple fiber-optic reflective memory interface boards using multiple single fiber-optic cables. The connection method is as follows: Node1 board's transmit to Node2 board's receive, Node2 board's transmit to Node3 board's receive, and so on, with Node6 board's transmit looping back to Node1 board's receive.

 

Using HUB Mode

Directly connect the fiber-optic board and the HUB using a dual-fiber crossover cable, as shown in the figure below.

 

[Driver Installation]

Locate the driver for the fiber-optic reflective memory interface board in the "Driver" directory on the product's accompanying CD. Double-click the setup.exe file in the driver installation directory to install.

After installation, verify that the board driver is correctly installed via the "Device Manager" in the computer system. The fiber-optic reflective memory interface board device should appear in the device list as shown in the figure below.

 

[Application Programming Interface (Windows & VC++)]

Add Library Files to Your VC++ Project

The library files are located in the installation directory specified during driver installation. The required library files are: Fiber2125API.dll, Fiber2125API.lib, Fiber2125API.h.

Driver Call Steps

Step1: Open the board by calling the Open(0) function.

Step2: Read/write data on the board. Commonly used read/write functions include FIB2125_Write32 and FIB2125_Read32 for reading and writing 32-bit data. The functions require specifying the reflective memory address to read/write, the number of data units (in bytes), and the starting address of the data to write/read. For details, refer to the user manual. Functions such as FIB2125_WriteDouble, FIB2125_ReadDouble, FIB2125_WriteFloat, FIB2125_ReadFloat, FIB2125_Write16, FIB2125_Read16, FIB2125_Write8, FIB2125_Read8 operate similarly and are used for reading/writing double-precision, floating-point, 16-bit, and 8-bit data, respectively. For details, refer to the user manual.

Call Example:

DWORD dwData1[2];

dwData[0] = 0x01;

dwData[1] = 0x02;

/*Write the two DWORD data 0x01 and 0x02 sequentially to the fiber-optic reflective memory starting at address 0*/

FIB2125_Write32(0, 0, dwData, 2);

/*Read two DWORD-type data sequentially from the fiber-optic reflective memory starting at address 0 and store them in dwData1[0] and dwData1[1]*/

FIB2125_Read32(0, 0, dwData1, 2);

Step3: Close the board by calling the FIB2125_Close(0) function to complete usage.

[Test Program Usage]

The test program is located in Windows Start Menu => All Programs => Fiber Card => Test Program, as shown below.

 

Before starting the test, connect the fiber-optic cable according to one of the three modes described in [Fiber-Optic Reflective Memory Network Connection Methods].

The test allows setting the range of random numbers, data length, read/write address range, etc. The interface can display sent/received data frames and the bit error rate.