LIK -- Delete One or All Logic Input Pin Commands

8.81. LIK -- Delete One or All Logic Input Pin Commands

This command "kills" or deletes all commands for a given logic input pin. In other words, the commands associated with LIA, LID, and LIH will be deleted for the specified logic input. A wildcard

character can also be specified for the logic input pin, in which case the commands for all logic input pins will be deleted.

Using this command is more efficient than deleting one command or pin at a time since this command deletes them all at once and requires fewer writes to non-volatile memory.

This command is saved to global non-volatile memory and is not part of a preset. Its value is saved each time it is changed. It will retain its value after power-down. Since this command writes to non- volatile memory, there will be a delay before an acknowledgment is returned.

ExampleDescription

Delete all the commands associated with logic input pin 5. This one command is equivalent to executing the commands ' S01LIA5, ', '

S01LIK5 S01LID5, ', and ' S01LIH5, ' except that this command is more efficient.

Delete all the commands associated with all logic input pins. This one command is equivalent to executing the commands ' S01LIA1, '

S01LIK* S01LID1, ', and ' S01LIH1, ' for each logic input, except that this command is much more efficient.

Status Message

S01LIK5

S01LIK*

8.82. LIM -- Mask Logic Input Pins

This command is used to mask (i.e., disable) logic input pins. The mask consists of 24 fields (one for each logic input) that can each be set to 0 or 1. If the mask bit for a given logic input is set to 1, then the logic input pin works normally. If the mask bit for a given logic input is set to 0, then the logic input is disabled. When a logic input is disabled, any commands assigned to the logic pin via LIA,

LID, and LIH will not be executed.

If a logic pin is disabled and then re-enabled at some later time and the logic input has changed state from when it was disabled, the command associated with the state change will be executed. For example, if a logic input pin is high when it is disabled, and it is low when it is re-enabled, the command defined via LID (or LIA if the polarity is changed via LIP) will be executed. However, if the

pin changes state multiple times while it is disabled, multiple commands will not be executed; only the difference in state when the logic input is re-enabled is considered.

This command is saved to non-volatile memory only as part of a preset. The state of this command will be restored after power-up only if a preset is saved and that preset is set to be the power-on preset.

Example

Description Status Message

RS-232 specifications

Polycom RS-232 is a key interface utilized in various communication and audiovisual systems, enabling effective integration between different devices. This technology employs a standard serial communication protocol that allows for robust control and communication, particularly in environments that require sophisticated audiovisual setups.

One of the main features of Polycom RS-232 is its ability to facilitate point-to-point communication over distances of up to 50 feet without the need for a repeater. This long-range connectivity is essential in large conference rooms and auditoriums where devices are often spread out over considerable distances. The serial connection is often more reliable than wireless options, which can be susceptible to interference.

Another notable characteristic is its versatile compatibility with a range of devices, including cameras, projectors, and interface panels. This allows users to control multiple devices from a single point, streamlining the operation of complex setups. The straightforward nature of RS-232 commands simplifies integration, which is a significant benefit for both installers and end-users.

Polycom RS-232 also supports various baud rates, giving users the flexibility to optimize communication speed based on their requirements. This adaptability ensures that users can achieve the desired performance, whether they are managing basic functions like power and volume control or more complex commands for switching video sources or adjusting settings.

The technology also features error-checking capabilities, which contribute to its reliability in communication. This reduces the likelihood of issues during operations, ensuring that commands are correctly received and executed. Additionally, its structured protocol aids in diagnosing and troubleshooting, making it easier to manage any issues that arise.

With its robust nature and proven reliability, Polycom RS-232 remains a pivotal technology in the realm of audiovisual communications. Its combination of long-range capabilities, compatibility, flexibility, and reliability makes it an essential tool for enhancing the efficiency of modern communication environments. As technology continues to evolve, the importance of dependable interfaces like Polycom RS-232 cannot be overstated, ensuring seamless integration and operation of sophisticated communication systems. Whether used in educational institutions, corporate environments, or event venues, Polycom RS-232 guarantees a streamlined experience in device management and control.

Polycom RS-232 LIK -- Delete One or All Logic Input Pin Commands, LIM -- Mask Logic Input Pins

Models: RS-232