Product specifications
Table Of Contents
- 1.0 ABOUT THIS MANUAL
- 2.0 PRODUCT DESCRIPTION
- 2.1 Transceiver Features
- 2.2 Model Number Codes
- 2.3 Spread Spectrum Radios— How Are They Different?
- 2.4 Typical Applications
- Multiple Address Systems (MAS)
- Point-to-Point System
- Adding a Tail-End Link to an Existing Network
- Extending a TransNET Network with a Repeater
- 2.5 Accessories
- 3.0 INSTALLATION PLANNING
- 3.1 General Requirements
- 3.2 Site Selection
- Terrain and Signal Strength
- Conducting a Site Survey
- 3.3 A Word About Radio Interference
- 3.4 Antenna & Feedline Selection
- Antennas
- Feedlines
- Antenna System Ground
- 3.5 How Much Output Power Can be Used?
- 4.0 INSTALLATION
- 4.1 Transceiver Installation
- 4.2 Configuring Multiple Remote Units
- 4.3 Tail-End Links
- 4.4 Configuring a Network for Extensions
- 5.0 OPERATION
- 5.1 Initial Start-up
- 5.2 Performance Optimization
- Antenna Aiming
- Antenna SWR Check
- Data Buffer Setting—Modbus Protocol
- Hoptime Setting
- TotalFlow™ Protocol at 9600 with Sleep Mode
- Operation at 115200 bps
- Baud Rate Setting
- Radio Interference Checks
- 6.0 RADIO PROGRAMMING
- 6.1 Radio Programming Methods
- Terminal Interface
- PC-Based Configuration Tool
- 6.2 User Commands
- Entering Commands
- 6.3 Detailed Command Descriptions
- ADDR [1–65000]
- AMASK [0000 0000–FFFF FFFF]
- AT [ON, OFF]
- ASENSE [HI/LO]
- BAUD [xxxxx abc]
- BAND [A, B, C]
- BUFF [ON, OFF]
- CODE [NONE, 1…255]
- CSADDR [1–65000, NONE]
- CTS [0–255]
- CTSHOLD [0–60000]
- DEVICE [DCE, CTS KEY]
- DLINK [xxxxx/ON/OFF]
- DKEY
- DTYPE [NODE/ROOT]
- FEC [ON, OFF]
- HOPTIME [7, 28]
- INIT
- HREV
- KEY
- LED [ON, OFF]
- LPM [1, 0]
- LPMHOLD [0–1000]
- MODE [M, R, X]
- MRSSI [NONE, –40...–90]
- OT [ON, OFF]
- OWM [xxxxx]
- OWN [xxxxx]
- PORT [RS232, RS485]
- PWR [20–30]
- REPEAT [0–10]
- RETRY [0–10]
- RSSI
- RTU [ON, OFF, 0-80]
- RX [xxxx]
- RXD [0–255]
- RXTOT [NONE, 0–1440]
- SAF [ON, OFF]
- SETUP
- SER
- SHOW CON
- SHOW PWR
- SHOW SYNC
- SKIP [NONE, 1...8]
- SLEEP [ON, OFF]
- SREV
- STAT
- TEMP
- TX [xxxx]
- UNIT [10000–65000]
- XADDR [0–31]
- XMAP [00000000-FFFFFFFF]
- XPRI [0–31]
- XRSSI [NONE, –40...–120]
- ZONE CLEAR
- ZONE DATA
- 7.0 TROUBLESHOOTING
- 7.1 LED Indicators
- 7.2 Alarm Codes
- Checking for Alarms—STAT command
- Major Alarms versus Minor Alarms
- Alarm Code Definitions
- 7.3 Troubleshooting Chart
- 7.4 Performing Network-Wide Remote Diagnostics
- 7.5 Internal Fuse Replacement
- 8.0 RADIO FIRMWARE UPGRADES
- 8.1 Obtaining New Firmware
- Saving a Web-Site Firmware File Onto Your PC
- 8.2 Installing Firmware Into Your Radio
- 9.0 OPERATING PRINCIPLES AND CONFIGURATION
- 9.1 SAF Operation with Extension Radios
- Simple Extended SAF Network
- Extended SAF Network
- Retransmission and ARQ Operation
- SAF Configuration Example
- 9.2 Synchronizing Network Units
- Synchronization Messages
- 9.3 Using AT Commands
- 9.4 Configuration Parameters for Store-and-Forward Services
- 9.5 Using the Radio’s Sleep Mode (Remote Units Only)
- Sleep Mode Example
- 9.6 Low-Power Mode (LPM)—Master Enabled
- Setup Commands
- Reading RSSI and Other Parameters with LPM Enabled
- Power Consumption Influence by HOPTIME and SAF Settings
- 9.7 Low-Power Mode versus Remote’s Sleep Mode
- 9.8 Mobile Operation Support
- Introduction
- Operational Influences—Hoptime & SAF
- 9.9 MIRRORED BITS™ Protocol Support
- 9.10 Seamless Mode Emulation
- Master Station Configuration
- Antenna System for Co-Located Master Stations
- 10.0 TECHNICAL REFERENCE
- Pin Descriptions—RS/EIA-232 Mode
- Pin Descriptions—RS/EIA-422/485 Mode
- Using the I/O Points with InSite™ NMS Software
- Application Example—Digital Input and Output at a Remote
MDS 05-2708A01, Rev. E MDS TransNET Ref. Manual 63
Operational Influences—Hoptime & SAF
The synchronization period is influenced by two parameters’
values—
HOPTIME and SAF (Store-and-Forward). Table 26 shows several
configurations and the associated synchronization period value.
9.9 MIRRORED BITS™ Protocol Support
TransNET radios are compatible with Schweitzer’s Mirrored Bits MB8
protocol, provided complementary firmware (06-4045A01) is installed in all
network radios. A detailed application guide (AG2003-07) is available from
Schweitzer Engineering Labs Web site, www.SELinc.com/aglist.htm, or
from Microwave Data Systems’ Web site at www.microwavedata.com.
9.10 Seamless Mode Emulation
The RXD command assumes the payload message will be ready for transmis-
sion after the delay period has expired. If there is a chance the payload data
may be delayed, it is recommended to use the
BUFF(er) command to make
sure the entire message is received before delivery is started. The
BUFF
command provides a highly-reliable seamless operating mode, but can be
very slow to start, especially if it waits for the reception of long messages
before passing on the message.
9.11 Full-Duplex Emulation
If your system design needs to support PTP or Point-to-Multipoint applica-
tions and your communications must appear to be full-duplex to the
connected devices, set the Master to
CSADDR xxxxx (where xxxxx is the
Network Address (
ADDR). This will place the system in a time-division
duplex mode (TDD). The radio system will appear to be full-duplex to the
connected devices, but actually operates half-duplex over the radio link. Data
is buffered by the transmitting side until it is its turn to transmit. Throughput
will be approximately 1/2 of the
DATA interface rate.
9.12 Co-Located and Close-Proximity Masters
If your requirements call for multiple TransNET networks at the same loca-
tion, you need to ensure that interference between the systems in minimized
to prevent overload that will diminish the performance of the radios. Tradi-
tionally, vertical separation of the antennas of co-located radios was required
Table 26. Synchronization Period versus
Hoptime and SAF Settings
Sync Period Hoptime Value SAF
441 ms 7 OFF
1.8 sec 28 OFF
3.5 sec 28 ON