Abaco Systems / VMIC VMIVME-1184 32-Bit Change-of-State (COS) Input Board with Sequence-of-Events (SOE)
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  • abaco_systems_vmivme_1184_000000_view2_201891016810
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Abaco Systems / VMIC VMIVME-1184 32-Bit Change-of-State (COS) Input Board with Sequence-of-Events (SOE)

Features

  • (32) Channels of Optically Isolated Digital Change-of-State (COS) Inputs
  • Input Voltage Range is Field Configurable on a Channel-by Channel Basis
  • Front Panel LED Status Indicator for Each Input
  • COS Data is Captured in 512 States Deep FIFO

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Description

The Abaco Systems / VMIC VMIVME-1184 32-Bit Change-of-State (COS) Input Board with Sequence-of-Events (SOE) is an optically isolated digital input board with 32 user configurable channels. The inputs can be set up to monitor either voltage sensing or contact closure. Once the hardware has been configured and installed in the system, you can start monitoring the circuits. The data ports are always available for VMEbus data transfers. Simply read the address of the specific port, and record the state of the external circuits. This data is available in byte, word or long word accesses.

The board can be programmed to interrupt the system based on a change in the inputs. Change-of-State (COS) circuitry monitors the logical state of the inputs. When an input channel changes its state (for example, from a logic one to a logic zero), and the COS logic is set to trigger on that event, an interrupt can be issued to the host CPU. The COS logic is programmed via the Control and Status Register to store an event for certain conditions, such as the falling edge described above, and is channel specific.

The board is also capable of recording Sequence of Events (SOE). In this mode, when a specified change of state occurs on any of the channels, the previous state of all 32 channels is stored in the FIFO, followed by the current state. Additionally, a counter value incremented/decremented from the front panel counter input is stored in a separate FIFO to give the SOE an optional time stamp. The counter feature is also available in COS mode.

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

Product Family: VMIVME-1184, VMIVME1184, VMIVME-1184-000000, VMIVME 1184, VMIVME/1184, VMIVME.1184, VME-1184
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Specifications