Products Description
AS-B805-016 is an input module in the MODICON 800 series, which is used for the acquisition and recognition of on-site input signals in industrial automation control systems. This module is suitable for integration into the MODICON 800 series I/O system. It can stably receive input signals from field devices and convert them into signal states that the control system can process.
Technical Specifications
|
Brand |
Modicon |
|
Model |
AS-B805-016 |
|
Part Number |
AS-B805-016 |
|
Description |
Input Module |
|
Origin |
France / USA |
|
Dimension |
35*20*10cm |
|
Weight |
0.3kg |
Signal processing characteristics
The AS-B805-016 module typically features:
➤ The upper part is the main PCB, which includes input isolation circuits, detection circuits, status indicators (such as LEDs), etc.;
➤ The bottom or front end is a standard screw terminal strip for connecting external field wires;
➤ The side or back of the module can be inserted into an I/O rack slot to make electrical connections with the PLC host and backplane bus.
In a typical MODICON PLC system rack, the AS-B805-016 is integrated with the CPU module and output modules via the backplane bus.
✔ The CPU module is responsible for program execution and I/O data exchange;
✔ AS-B805-016 serves as a discrete input channel;
✔ The output module drives field devices based on the PLC's logical output.
Compared with modern PLC I/O (such as remote I/O supported by protocols like Ethernet/IP and PROFINET), the Modicon 800 series leans towards the traditional backplane PLC architecture and is suitable for industrial systems with long planned maintenance cycles and mature control logic.
Input signal shaping processing
The AS-B805-016 is equipped with a dedicated input shaping circuit on each input channel to standardize the AC input signals from the site. This circuit can rectify and limit the input waveform, converting irregular or amplitude-fluctuating signals into stable and recognizable logical states, thereby enhancing the system's adaptability to on-site signals.
Anti-interference and filtering characteristics
The AS-B805-016 filters the input signal during the signal processing, which can suppress common electromagnetic interference, voltage glitches, and transient noise on site. Through the internal filter circuit, the module can reduce the probability of false triggering and ensure the stability and consistency of the input state in complex industrial environments.
Response time control
The module has a reasonable response time control capability for changes in input signals. When the signal changes from an invalid state to a valid state, or from a valid state to an invalid state, it goes through an internal confirmation process before outputting the result. This feature can prevent incorrect state switching caused by instantaneous jitter or short-term interference, making it suitable for control scenarios that require reliable state detection.
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