Instruction manual

Contents
025-9209 ix
RS-232 Watchdog Configuration ............................................................28
CONFIGURING THE RTUs...............................................................................28
Assign Addresses.....................................................................................28
MODBUS Version of the RTU Menu .....................................................29
CONFIGURING THE MASTER PC (OR PLC).................................................29
BASIC MODBUS I/O ADDRESSING...............................................................30
USING ACCUMULATORS AND COUNTERS ...............................................31
SOFTWARE PRODUCTS FOR THE MODBUS PROTOCOL ........................36
SET UP AND INSTALLATION
INSTALLATION ................................................................................................37
Power Connection....................................................................................37
System Grounding ...................................................................................37
Radio Connection ....................................................................................38
Step 1. Cable Connection.........................................................................38
Step 2. Carrier Detect and Push to Talk Settings.....................................38
Step 3. Transmit and Receive Audio Adjustment....................................39
MODEL 1708 JUMPERS AND I/O....................................................................40
Model 1708 Jumper Settings ...................................................................40
Model 1708 I/O Connections...................................................................41
MODEL 1716 JUMPERS AND I/O....................................................................42
Model 1716 Jumper Settings ...................................................................42
Model 1716 I/O CONNECTIONS...........................................................43
CONNECTION OF LOCAL RTU TO MODEL 1700 CONTROLLER ............44
50-PIN INDUSTRIAL I/O BOARD CONNECTOR ..........................................45
THEORY OF OPERATION
BASIC FUNCTIONAL DESCRIPTION ............................................................47
FUNCTIONAL BLOCK DIAGRAM .................................................................47
TROUBLESHOOTING GUIDE
OVERVIEW ........................................................................................................49
REPAIR
MODEL 1708/1716 COVER REMOVAL AND REPLACEMENT ..................51
MODEL 1700 SERIES ENCLOSURE OUTLINE (024-0057B) .......................52
MODEL 1700 SERIES ENCLOSURE INSTRUCTIONS (024-0056D)............53
MODEL 1708 REMOTE TERMINAL UNIT SILKSCREEN (702-9439F) ......55
MODEL 1716 REMOTE TERMINAL UNIT SILKSCREEN (702-9440F) ......56
APPENDIX A
COMMUNICATING OVER TWO-WIRE BALANCED LINE (600Ω) ...........57