B&B Electronics ZZ24D-NA(NB,NC,ND)-SR - Manual - Manual (Page 3)

Manual Documentation Number: pn7515_ZlinxIO-0712m ····································································································· iii
C ONTENTS
1. OVERVIEW ..................................................................................................................................................................................... 1
1.1 N OTICES ..................................................................................................................................................................................... 1
1.2 P REREQUISITES ........................................................................................................................................................................... 1
1.3 S AFETY I NFORMATION ................................................................................................................................................................ 1
1.4
UL &
C UL I NSTALLATION I NFORMATION ................................................................................................................................... 1
1.5 A BOUT THIS MANUAL ................................................................................................................................................................. 3
1.6 Z LINX W IRELESS I/O P RODUCT S PECIFICATION S UMMARY ........................................................................................................ 5
2. PRODUCT INTRODUCTION ....................................................................................................................................................... 6
2.1 Z LINX W IRELESS I/O P RODUCT F AMILY ..................................................................................................................................... 6
2.2 Z LINX W IRELESS I/O M ODES OF O PERATION ............................................................................................................................. 6
2.2.1 Peer-to-Peer Mode .......................................................................................................................................................... 6
2.2.2 Modbus Mode .................................................................................................................................................................. 7
2.2.3 Repeater Mode ................................................................................................................................................................ 8
2.2.3.1 Configuring Modbus Radio Modem as a repeater ............................................................................................................................. 8
2.3 P ACKAGE C ONTENTS .................................................................................................................................................................. 9
2.4 F EATURES ................................................................................................................................................................................. 10
2.5 R ADIO F REQUENCY B ASICS ...................................................................................................................................................... 11
2.5.1 What is dBm? ................................................................................................................................................................. 11
2.5.2 Lower Frequencies - Better Propagation ................................................................................................................... 11
2.5.3 Range Performance ...................................................................................................................................................... 11
2.5.4 RF Noise ......................................................................................................................................................................... 12
2.5.5 Fade Margin ................................................................................................................................................................... 12
2.5.6 Remember Your Math .................................................................................................................................................. 12
2.5.7 RF Attenuation and Line of Sight ................................................................................................................................ 12
2.5.7.1 Path Loss Rules of Thumb ............................................................................................................................................................... 13
2.5.7.2 Antennas .......................................................................................................................................................................................... 13
2.5.7.3 Cable Loss ....................................................................................................................................................................................... 14
3. HARDWARE INFORMATION ................................................................................................................................................... 15
3.1 R ECOMMENDED P RACTICE B EFORE I NSTALLATION .................................................................................................................. 15
3.2 Z LINX W IRELESS I/O M ODULES ............................................................................................................................................... 15
3.2.1 Base Modules ................................................................................................................................................................ 16
3.2.2 Expansion Modules ....................................................................................................................................................... 16
3.2.3 Configuration Box .......................................................................................................................................................... 17
3.3 I/O O PTIONS AND C HARACTERISTICS ....................................................................................................................................... 17
3.3.1 I/O Options ..................................................................................................................................................................... 17
3.3.2 I/O Types and Characteristics ..................................................................................................................................... 18
3.3.2.1 Digital Inputs ................................................................................................................................................................................... 18
3.3.2.2 Digital Outputs ................................................................................................................................................................................. 18
3.3.2.3 Analog Inputs ................................................................................................................................................................................... 18
3.3.2.4 Analog Outputs ................................................................................................................................................................................ 18
3.3.3 I/O Wiring ........................................................................................................................................................................ 20
3.3.3.1 DI Wiring ......................................................................................................................................................................................... 20
3.3.3.2 DO Wiring ....................................................................................................................................................................................... 20
3.3.3.3 AI Wiring ......................................................................................................................................................................................... 21
3.3.3.4 AO Wiring ....................................................................................................................................................................................... 22
3.3.3.5 RTD Wiring ..................................................................................................................................................................................... 25
3.3.4 Modbus I/O Addressing ................................................................................................................................................ 25
3.3.4.1 Function Field and Modbus I/O Addressing .................................................................................................................................... 27
3.3.5 Modbus Counters .......................................................................................................................................................... 27
3.4 A CCESSORIES ............................................................................................................................................................................ 28
3.4.1 LED Indicators ............................................................................................................................................................... 28
3.4.1.1 Power LED ...................................................................................................................................................................................... 28
3.4.1.2 RSSI LED ........................................................................................................................................................................................ 28
3.4.1.3 RF Data LED ................................................................................................................................................................................... 28
3.4.1.4 Bus LED .......................................................................................................................................................................................... 28