Omron DDAA1000/SRM manual Point-to-Multipoint Discrete Operation, Master

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DDAA1000/SRM User Guide

Point-to-Multipoint Discrete Operation

A multipoint system will involve two or more remote locations, which may be transmitting contact input information, providing discrete outputs or both. The following is an example of a multipoint configuration.

In this example, the Master is transmitting a contact closure input to both Remotes. Note that input #1 on the Master will trigger the same numbered output on all Remote units at the same time.

Since there are more remote inputs than master outputs, the contact closures at the Remote inputs are ‘OR’d at the Masters outputs. The closure of any Remote input will cause the Master output to be On (sinking current). If any Remote input is closed the Master output will be On for that position. For the Master output to be Off, all Remote inputs must be open (Off).

Figure 5: Point-to-Multipoint Discrete Operation Example

DC Supply

+ -

Dry Contact Closure
8 7 6 5 4 3 2 1 G	8 7 6 5 4 3 2 1 G

Contact Closure Input

Contact Closure Output

Master

8 7 6 5 4 3 2 1 G

8 7 6 5 4 3 2 1 G

Contact Closure Input

Contact Closure Output

Remote 0

DC Supply

+ -

8 7 6 5 4 3 2 1 G

8 7 6 5 4 3 2 1 G

Contact Closure Input

Contact Closure Output

Remote 1

PN 161-09981-002C

rev 8/04

DATA-LINC GROUP

7

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Contents DDAA1000/SRM Product User Guide FCC NotificationTable of Contents DATA-LINC Group DDAA1000 and DD1000 IntroductionPower Connector Antenna Connectoin TypeTeminal Block Connections Discrete OperationMaster Remote Point-to-Point Discrete OperationMaster Point-to-Multipoint Discrete OperationAnalog Operation Supply loop powerPoint-to-Point Analog System Needed. The DDAA1000 unites do notMaster or Remote Connection of a flow meter to the DDAA1000/SRM unitPoint-to-Multipoint Analog System Factory Configuration ProcessPoint-to-Multipoint Analog Example Remote Point-to-Multipoint Analog OperationLayout Drawing Changing System or Radio ConfigurationsTechnical Specifications Troubleshooting Return Material Authorization Product WarrantyTechnical Support Contact InformationTOP Appendix aAppendix B DDAA1000 DD1000 ConfigurationDATA-LINC Group Ddaa Eeprom MENU** *SET Caplck DATA-LINC Group Terminal Settings Appendix C Radio ConfigurationMain Menu Point-to-point Master Main Menu Option 0 Set Operation ModePoint-to-Point Remote Point-to-Multi-Point MasterDDAA1000/SRM User Guide Point-to-Point Remote/Repeater Point-to-Point Remote/Master SwitchablePoint-to-Point Repeater Point-to-Multi-Point RepeaterMain Menu Option 1 Set Baud Rate Available data word length and parity selectionsModBus RTU Call Book Menu Main Menu Option 2 Edit Call BookEntry Number Repeater 000-0000 Edit Call Book in Multi-Point SystemsMain Menu Option 3 Edit Radio Transmission Characteristics FreqKeyMax Packet Size and 2 Min Packet Size Selections Maximum Packet Size Settings where RF Data Rate=3 DDAA1000/SRM User Guide Minimum Packet Size Settings bytesRF Data Rate Xmit RatePower Transmit Settings DDAA1000/SRM User Guide RF Xmit PowerRemote Security RTS to CTSDDAA1000/SRM User Guide Lowpower Mode High NoiseMCU speed Main Menu Option 4 Show Radio Statistics Average Signal LevelAverage Noise Level Overall Rcv Rate %Radio Temperature DDAA1000/SRM User Guide Number of DisconnectsMulti-Point Operation Multi-Point Parameters Main Menu Option 5 Edit Multi-Point ParametersRemote/Repeater DiagnosticsSubNet ID Radio IDMain Menu Option 8 Password Disabling Password Changing a PasswordDDAA1000/SRM and DD1000/SRM Placement Locations