Optically isolated change-of-state input board

GE Fanuc Embedded Systems Inc. in Huntsville, Ala., is offering the VMIVME-1184 optically isolated 32-channel input board with change-of-state (COS) interrupt capabilities. The interrupt control logic can be programmed to issue an interrupt upon specific state changes. The user selects the state change to use by programming the Control and Status Register (CSR) for the desired activity. Sequence of event data may be correlated to an internal counter register. This counter may be clocked from an external pulse input through the front-panel connection. Alternatively, this counter can be configured for quadrature input signal from two pulse inputs. The pulse input may be connected to additional VMIVME-1184s in daisy-chain fashion such that the counters are synchronized to the same count rate and value. The board supports byte, word, and longword data transfers. Key features include field-configurable input voltage; front-panel LED status indicator for each input; COS detection is programmable on an individual channel basis; contact debounce is software selectable; COS data is captured in 512 states deep FIFO; programmable interrupt vector; sequence-of-Event (SOE) monitoring; front panel inputs for configurable counter/quadrature input with daisy chaining capability; and available with either a standard VME front panel or the IEEE 1101.10 front panel. GE Fanuc Embedded Systems is part of GE Fanuc Automation, a joint venture between GE and FANUC Ltd. of Japan. For more information contact the company online at www.gefanuc.com/embedded.