Rockwell Allen Bradley 1756-CNB Module

Allen Bradley 1756-CNB Module New In Stock

Introduction

The primary advantage of using DF1 radio modem protocol for radio modemnetworks is in transmission efficiency. Each read/write transaction (commandand reply) requires only one transmission by the initiator (to send the command)and one transmission by the responder (to return the reply). This minimizes thenumber of times the radios need to key-up to transmit, which maximizes radiolife and minimizes radio power consumption. In contrast, DF1 half-duplexprotocol requires five transmissions for the DF1 master to complete a read/writetransaction with a DF1 slave - three by the master and two by the slave.The DF1 radio modem driver can be used in a pseudo master/slave mode withany radio modems, as long as the designated master node is the only nodeinitiating MSG instructions, and as long as only one MSG instruction is triggeredat a time.For modern serial radio modems that support full-duplex data port buffering andradio transmission collision avoidance, the DF1 radio modem driver can be usedto set up a masterless peer-to-peer radio network. In a peer-to-peer radionetwork, any node can initiate communication to any other node at any time, aslong as all of the nodes are within radio range so that they receive each other’stransmissions.

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

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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.

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