連接到AC 800M的CI858單元的最大數(shù)量為兩個。

CI858的功能結(jié)構(gòu)包括

?CEX總線接口：

CI858和AC 800M之間的通信通過

CEX總線。CEX總線的工作時鐘頻率為64 MHz。這個

最大傳輸數(shù)據(jù)約為1.25兆字節(jié)/秒。

?DDCS接口

–驅(qū)動總線

–I/O總線

–PC工具

?來自CEX總線的+24 V電源。

?從+24 V到+5 V、+3.3V和+2.5 V的DC/DC轉(zhuǎn)換。

?摩托羅拉數(shù)字信號處理器DSP56303，CPU頻率為72 MHz。

?用于CEX總線接口的Xilinx XC2S50 FPGA。上提供94個用戶I/O引腳

CI858。

?32 kB引導(dǎo)PROM，AT27LV256，用于引導(dǎo)代碼。

?1 MB閃存PROM，Am29DL800B，用于程序代碼。

?768 kB SRAM程序和數(shù)據(jù)存儲器。

AC 800M和CI858通過雙端口RAM、DPRAM相互通信。

DPRAM具有以下功能：

?雙端口存儲器，32*16 kB。

?每個方向一次中斷。

?八個信號量，簡化了共享資源的利用。

?ONCE端口，可用于對模塊進(jìn)行重新編程。

CI858專用I/O通道可用于連接每個單元最多12個I/O。這個

I/O通道能夠傳輸2個數(shù)據(jù)集對/1毫秒。I/O單元以

環(huán)形拓?fù)洹?/p>

支持以下I/O單元：

–NAIO-03模擬輸入/輸出擴(kuò)展模塊-包含2個電流或電壓

輸入和2個電流輸出

–NBIO-21基本輸入/輸出第二單元-包含3個數(shù)字輸入，2個模擬輸入，2

數(shù)字輸出和2個模擬輸出

–NBIO-31基本輸入/輸出第三單元-包含4個數(shù)字輸入和3個數(shù)字輸出

–NCTI-01起重機(jī)傳感器接口

–NDIO-02數(shù)字I/O擴(kuò)展模塊-包含2個數(shù)字輸入和2個

繼電器輸出

–ACS600二極管電源的NDSC-01控制板

–NPCT-01脈沖計數(shù)器和定時器單元-包含2個編碼器輸入，4個

數(shù)字輸入，4個數(shù)字輸出

–NTAC-02脈沖編碼器接口模塊-包含用于

數(shù)字脈沖編碼器連接

–NWIO-01看門狗輸入/輸出模塊-包含看門狗邏輯

監(jiān)督軟件的運行

The maximum number of CI858 units connected to the AC 800M is two.

The functional structure of the CI858 includes

? CEX bus interface:

Communication between the CI858 and the AC 800M is implemented through

the CEX bus. The CEX bus operates with a clock frequency of 64 MHz. The

maximum transfer data is ~1.25 MBytes/s.

? DDCS interfaces for

– DriveBus

– I/O Bus

– PC Tool

? +24 V power supply from the CEX bus.

? DC/DC conversion from +24 V to +5 V, + 3.3V and +2.5 V.

? Motorola Digital Signal processor DSP56303 with 72 MHz CPU frequency.

? Xilinx XC2S50 FPGA for the CEX bus interface. 94 user I/O pins available on

CI858.

? 32 kB boot PROM, AT27LV256, for boot code.

? 1 MB flash PROM, Am29DL800B, for program code.

? 768 kB SRAM program and data memory.

AC 800M and CI858 communicate with each other via dual-port RAM, DPRAM.

The DPRAM has the following functionalities:

? Dual-port memory, 32 * 16 kB.

? One interrupt in each direction.

? Eight semaphores which simplifies the utilization of shared resources.

? ONCE port which can be used for reprogramming the module.

The CI858 Special I/O channel can be used to connect up to 12 I/O’s per unit. The

I/O channel is able to transfer 2 dataset pairs / 1 ms. The I/O units are connected in a

ring topology.

The following I/O units are supported:

– NAIO-03 Analogue I/O Extension Module - contains 2 current or voltage

inputs and 2 current outputs

– NBIO-21 Basic I/O Unit 2 - contains 3 digital inputs, 2 analogue inputs, 2

digital outputs and 2 analogue outputs

– NBIO-31 Basic I/O Unit 3 - contains 4 digital inputs and 3 digital outputs

– NCTI-01 Crane Transducer Interface

– NDIO-02 Digital I/O Extension Module - contains 2 digital inputs and 2

relay outputs

– NDSC-01 control board of the ACS600 Diode Supply

– NPCT-01 Pulse Counter and Timer Unit - contains 2 encoder inputs, 4

digital inputs, 4 digital outputs

– NTAC-02 Pulse Encoder Interface Module - contains an interface for a

digital pulse encoder connection

– NWIO-01 Watchdog I/O Module - contains watchdog logic for

supervising the operation of the software