特点:

• (32)光隔离数字状态变化(COS)输入通道
• 输入电压范围可逐通道现场配置
• 每个输入的前面板LED状态指示器
• COS数据在512状态深度FIFO中捕获

带有事件序列(SOE)的Abaco Systems / VMIC VMIVME-1184 32位状态变化(COS)输入板是一种光隔离数字输入板，具有32个用户可配置通道。输入可以设置为监控电压检测或触点闭合。一旦硬件配置完成并安装到系统中，您就可以开始监控电路了。数据端口始终可用于VMEbus数据传输。只需读取特定端口的地址，并记录外部电路的状态。该数据可通过字节、字或长字访问获得。

可以对电路板进行编程，根据输入的变化中断系统。状态变化(COS)电路监控输入的逻辑状态。当输入通道改变其状态时(例如，从逻辑1变为逻辑0)，COS逻辑设置为触发该事件，可以向主机CPU发出中断。COS逻辑通过控制和状态寄存器进行编程，以存储特定条件下的事件，例如上述下降沿，并且特定于通道。

该板还能够记录事件序列(SOE)。在这种模式下，当任何通道发生指定的状态变化时，所有32个通道的先前状态存储在FIFO中，随后是当前状态。此外，从前面板计数器输入递增/递减的计数器值存储在单独的FIFO中，以便为SOE提供可选的时间戳。COS模式下也提供计数器功能。

VMIVME-1184将状态变化存储在板载FIFO中。当FIFO为空(ROFE)或中断已被确认(ROAK)时，电路板可被配置为清除中断请求。如果一个COS在前一个COS等待服务时发生，或者在中断服务程序中发生，事件将被保存。

该板还接受16路模拟输入。这些输入可以是差分或伪差分(单端)。可为输入订购36 Hz单极输入滤波器。输入ADC可以通过编程(通过片上跳线)在各种电压范围内工作。这些范围为0至+5 V、0至+10 V(单极性)、2.5、5.0或10 V(双极性)。输入具有12位分辨率。输入可以由板载多路复用器扫描，数据存储在双端口存储器中。

VMIVME-4514A有三种ADC工作模式。它们是随机轮询、扫描轮询和自动扫描。当主板通电时，系统复位后，或在程序控制下，进入自动扫描模式。在这种模式下，所有16个通道都被连续扫描。它们的输入被数字化并存储在16个12位双端口寄存器中。除了从这些寄存器中读取数据外，无需编程。

产品系列:VMIVME-4514A、VMIVME4514A、VMIVME4514A、VME-4514A、VME4514A、VME4514A、VMIVME-4514、VMIVME 4514、VMIVME 4514、VME-4514、VME 4514、VME 4514

VMIVME-1184-000000

Features:
(32) Optical isolation digital state change (COS) input channel
The input voltage range can be configured on-site channel by channel
Front panel LED status indicators for each input
COS data captured in 512 state depth FIFO

The Abaco Systems/VMIC VMIVME-1184 32-bit Change of State (COS) input board with Event Sequence (SOE) is an optically isolated digital input board with 32 user configurable channels. The input can be set to monitor voltage detection or contact closure. Once the hardware configuration is completed and installed in the system, you can start monitoring the circuit. The data port is always available for VMEbus data transmission. Just read the address of a specific port and record the status of the external circuit. This data can be accessed through bytes, words, or long words.

The circuit board can be programmed to interrupt the system based on changes in input. The state change (COS) circuit monitors the logical state of the input. When the input channel changes its state (for example, from logic 1 to logic 0), the COS logic is set to trigger this event, which can issue an interrupt to the host CPU. COS logic is programmed through control and status registers to store events under specific conditions, such as the falling edge mentioned above, and is channel specific.

The board can also record sequence of events (SOEs). In this mode, when any channel undergoes a specified state change, the previous states of all 32 channels are stored in the FIFO, followed by the current state. In addition, the counter values for increasing/decreasing input from the front panel counter are stored in a separate FIFO to provide optional timestamps for SOE. Counter function is also provided in COS mode.

VMIVME-1184 stores state changes in the onboard FIFO. When the FIFO is empty (ROFE) or the interrupt has been acknowledged (ROAK), the circuit board can be configured to clear the interrupt request. If a COS occurs while the previous COS is waiting for service, or during an interrupt service program, the event will be saved.

The board also accepts 16 analog inputs. These inputs can be differential or pseudodifferential (single ended). 36 Hz single pole input filters can be ordered for input. The input ADC can operate in various voltage ranges through programming (via on-chip jumpers). These ranges are 0 to+5 V, 0 to+10 V (unipolar), 2.5, 5.0, or 10 V (bipolar). The input has a 12 bit resolution. The input can be scanned by the onboard multiplexer, and the data is stored in dual port memory.

VMIVME-4514A has three ADC operating modes. They are random polling, scanning polling, and automatic scanning. When the motherboard is powered on, the system resets or enters automatic scanning mode under program control. In this mode, all 16 channels are continuously scanned. Their inputs are digitized and stored in 16 12 bit dual port registers. Apart from reading data from these registers, there is no need for programming.

Product series: VMIVME-4514A, VMIVME4514A, VMIVME4514A, VME-4514A, VME4514A, VME4514, VMIVME 4514, VMIVME 4514, VME-4514, VME 4514, VME 4514

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