Allen Bradley ControlLogix 1756-IRT8I Module

Allen Bradley 1756-IRT8I Module New In Stock

Introduction

The RPI specifies the rate at which a module multicasts its data. The time ranges from 200 microseconds to 750 milliseconds. When the specified time frame elapses, the module will multicast data (also called cyclic data exchange). If a change of state (COS) does not occur within the RPI timeframe, the module multicasts data at the rate specified by the RPI. Because the RPI and COS functions are asynchronous to the logic scan, it is possible for an input to change state during program scan execution. If this is a concern, buffer input data so your logic has a stable copy of data during its scan. Copy the input data from your input tags to another structure and use the data from that structure. The RPI and COS values still define when the module multicasts data within its own chassis, but only the value of the RPI determines when the owner controller receives the data over the network. When an RPI value is specified for an input module in a remote chassis, in addition to instructing the module to multicast data within its own chassis, the RPI also “reserves” a spot in the stream of data flowing across the ControlNet network. The timing of this “reserved” spot may or may not coincide with the exact value of the RPI, but the owner-controller will receive data at least as often as the specified RPI.

Allen Bradley Main Products:

1. SLC500:1747/1746 series
2.MicroLogix: 1761/1763/1762/1766/1764 series
3.CompactLogix: 1769/1768 series
4. The ControlLogix: 1756/1794/1760/1788 series
5. PLC-5:1771/1785 series
6.2711,2711P PanelView man-machine interface, touch screen, operation panel
7.22A,22B, 20 small frequency converter,150 soft starter
8. ProSoft: MVI69 / PS69 / MVI56 / MVI94 / MVI71 / MVI46/3150 9. ICS TRIPLEX: T8431 / T8461 / T3401 / T8310

Packaging & Shipping
1.All the goods will be tested before shipment.
2. Packing in professional anti-static bag.
3. We can ship to you by DHL/TNT/UPS/EMS/Fedex... Pls contact us directly and we will ship as your requirement.

Advantage Products

①Allen-Bradley(USA AB)Series

②Schneider(Schneider Electric)Series

③General electric(General Electric)Series

④Westinghouse Series

⑤SIEMENS Series

⑥ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic Robots、MOTOMAN Robots.

⑦Westinghouse: OVATION System、WDPF System、MAX1000 system spare parts.

Conversion、I/O Signal processing、Data communication systems?Digital-to-Analogue

⑧Invensys Foxboro I/A Series system，FBM（I/O）SCS、Trapezoidal logic control、Accident recalling、DAC

Invensys Triconex: Redundant fault-tolerant control system、Most modern fault-tolerant controller based on Triple Modular Redundancy (TMR) architecture.

⑨Siemens：Siemens MOORE，?Siemens Simatic C1，Siemens CNC system.

Other Brand Products