7

Forcing Circuits

Forcing an I/O circuit from a Hand±held Monitor causes the circuit to assume a selected state (for discrete circuits) or value (for analog circuits). The forced state/value is also stored in the Remote I/O Scanner's EEPROM memory, and will survive power failure. Because the forced state or value is stored in EEPROM, forcing is the only method of manipulating I/O circuits that guarantees a fixed output/input state.

Forcing I/O works equally well for stand±alone (off±line) and on±line remote drops. The Remote I/O Scanner's I/O Enabled LED flashes while any circuit in the remote drop is forced. Once forced, a circuit retains the selected state or value if power is cycled. The forced circuit ignores data from an attached input device, or output data from a CPU.

The force may be removed with the Hand±held Monitor. When unforced, a circuit responds to real input or output data. Output circuits normally begin accepting CPU outputs. If no CPU outputs are available, the output will either go to its programmed default state, or hold its last state, according to the circuit's preselected configuration.

The only other occurrence that removes forces is a configuration change, in which case all forced data is assumed obsolete and discarded.

Note

If a discrete circuit which is configured to hold its last state is forced while the Remote I/O Scanner online, the forced state is considered the last state. Therefore, if the Remote I/O Scanner goes offline and the force is removed while offline, the circuit remains in the forced state, rather than assuming its actual last state.

When the Remote I/O Scanner goes back online, the circuit will again accept outputs normally.

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Series 90±70 Remote I/O Scanner User's Manual ± July 1992

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GE GFK0579B user manual Forcing Circuits
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GFK0579B specifications

The GE GFK0579B is a compact and efficient refrigerator designed to meet the needs of modern households. With its sleek design and impressive features, it has quickly become a popular choice for those looking for functionality without compromising on aesthetics. One of the standout characteristics of this model is its energy efficiency, which is crucial in today's environmentally conscious market. The GFK0579B is equipped with advanced cooling technologies that ensure optimal temperature control while minimizing energy consumption.

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