User`s guide
Contents
9XTend™ RS-232/422/485 RF Modem User’s Guide
© 2007 MaxStream, Inc. iii
1. 9XTend RS-232/422/485 RF Modem 4
1.1. Key Features 4
1.1.1. Worldwide Acceptance 4
1.2. Specifications 5
1.3. External Interface 7
2. Interfacing Protocol 8
2.1. RS-232 Operation 8
2.1.1. DIP Switch Settings and Pin Signals 8
2.1.2. Wiring Diagrams 9
2.2. RS-485 (2-wire) Operation 10
2.2.1. DIP Switch Settings and Pin Signals 10
2.2.2. Wiring Diagram 10
2.3. RS-485 (4-wire) & RS-422 Operation 11
2.3.1. DIP Switch Settings and Pin Signals 11
2.3.2. Wiring Diagrams 11
3. RF Modem Operation 13
3.1. Serial Communications 13
3.1.1. RS-232 and RS-485/422 Data Flow 13
3.1.2. Host and RF Modem Settings 13
3.1.3. Flow Control 14
3.1.4. Transparent Operation 15
3.1.5. API Operation 15
3.2. Modes of Operation 16
3.2.1. Idle Mode 16
3.2.2. Transmit Mode 16
3.2.3. Receive Mode 18
3.2.4. Sleep Mode 19
3.2.5. Command Mode 21
4. RF Modem Configuration 23
4.1. Automatic DIP Switch Configurations 23
4.2. Programming Examples 24
4.2.1. AT Commands 24
4.2.2. Binary Commands 25
4.3. Command Reference Table 26
4.4. Command Descriptions 28
4.5. API Operation 46
4.5.1. API Frame Specifications 46
4.5.2. API Types 47
5. RF Communication Modes 49
5.1. Addressing 50
5.1.1. Address Recognition 50
5.2. Basic Communications 51
5.2.1. Streaming Mode (Default) 51
5.2.2. Multi-Transmit Mode 52
5.2.3. Repeater Mode 53
5.2.4. Polling Mode (Basic) 56
5.3. Acknowledged Communications 57
5.3.1. Acknowledged Mode 57
5.3.2. Polling Mode (Acknowledged) 59
6. Appendix A: Agency Certifications 60
6.1. FCC (United States) Certification 60
6.1.1. Labeling Requirements 60
6.1.2. FCC Notices 60
6.1.3. Limited Modular Approval 61
6.1.4. FCC-approved Antennas 61
6.1.5. Labeling Requirements 64
6.2. C-TICK (Australia) Certification 64
6.2.1. Power Requirements 64
7. Appendix B: Development Guide 65
7.1. RS-232 Accessories Kit Contents 65
7.1.1. Adapters 66
8. Appendix C: Additional Information 68
8.1. 5-Year Warranty 68
8.2. Ordering Information 68
8.3. Contact Digi 69