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V700-A80 Datasheet(PDF) 8 Page - Omron Electronics LLC |
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V700-A80 Datasheet(HTML) 8 Page - Omron Electronics LLC |
8 / 14 page 8 Electromagnetic Inductive RFID System V700 Functions ■ Transmission Functions Note: The V700-CD @D-V@ and V700-HMD11(-1) have different command structures. ■ Transmission Time (Reference) The transmission time is the time required for transmission between the Antenna and ID Tag and does not include time required for host commu- nications. V700-CD @D-V@ V700-HMD11/HMD11-1 Note: T = Transmission time (ms) N = Number of pages (1 page = 8 bytes) Multiple Access with the V700-CD @D-V@ The transmission time when using multiple-access commands not only depends on the number of bytes, but also on the number of ID Tags in the transmission range and the combination of the ID Tags’ codes. The average values for random ID codes are given below. (units: ms) ■ Mutual Interference Prevention Functions (Using the V700-CD@D-V@) If there is less than 15 m between Antennas, all the Antennas must be synchronized to prevent mutual interference. This can be done using either of the two methods described below. Read-only Synchronization If all the Antennas only use read commands, this method can be used to reduce the access time. Read/Write Synchronization This is the synchronization method that is usually used. It enables the synchronization of both read and write commands for several connected Antennas. V700-CD1D-V3 V700-CD2D-V3 V700-HMD11 V700-HMD11-1 Single access Provided Provided FIFO Provided Provided Multiple access Provided Not provided Selective access Provided Not provided Asynchronous Write T = 52.8 N + 113.5 Read T = 46.7 N + 60.7 Read-only synchronization Read T = 46.7 N + 107.4 Read-write synchronization Write T = 52.8 N + 172.4 Read T = 52.8 N + 119.6 Read T = 48 N + 66 Write T = 55 N + 120 Precautions on Using the Product near Noise Sources This product makes transmissions to ID Tags using a fre- quency of 125 kHz. Transceivers, motors, monitoring devic- es, and power supplies have parts that generate electromagnetic waves (noise). These waves may interfere with transmissions to ID Tags. Before using this product near these kinds of devices, check that there is no adverse affect on transmissions. Number of Tags Reading 8 bytes Writing 8 bytes 5 579 873 10 1,191 1,547 15 1,857 2,275 20 2,523 3,002 30 3,853 4,455 50 6,344 7,192 1 m min. 1 m min. 1 m min. 1 m min. 1 m min. 1 m min. 1 m min. 1 m min. Read Read Read Read Read Read Read Write Read/Write Read |
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