Section 5
Page 5 - 2
HA243821
Issue 5 Mar 98
MODEL 346 INSTALLATION AND OPERATION MANUAL
5.6 DERIVED VARIABLES (CONT.)
5.6.3 DERIVED CHANNEL CONFIGURATION ................................... 5 - 22
MAGNIFICATION CENTRE ............................................... 5 - 22
5.6.4 DERIVED VARIABLE CONFIGURATION .................................... 5 - 24
DV NUMBER ................................................................... 5 - 24
DV FUNCTION ................................................................ 5 - 24
DV SOURCE SELECT ........................................................ 5 - 24
CONSTANT ENTRY .......................................................... 5 - 24
DERIVED VARIABLE RESET ................................................. 5 - 26
DERIVED VARIABLE DESCRIPTOR ....................................... 5 - 26
DERIVED VARIABLE UNITS ................................................. 5 - 26
DERIVED VARIABLE DECIMAL POINT .................................. 5 - 26
5.7 COMMUNICATIONS OPTION ............................................ 5 - 27
5.7.1 INTRODUCTION ................................................................... 5 - 27
5.7.2 INSTALLATION ...................................................................... 5 - 27
WIRING ......................................................................... 5 - 27
TERMINATING RESISTOR .................................................. 5 - 28
BIASSING RESISTORS ...................................................... 5 - 28
5.7.3 CONFIGURATION ................................................................ 5 - 29
BAUD RATE ..................................................................... 5 - 29
PARITY ............................................................................ 5 - 29
FLOW CONTROL ............................................................ 5 - 29
DISABLE SCHEME ............................................................ 5 - 29
GROUP ID (G) ................................................................. 5 - 29
UNIT ID (U) ..................................................................... 5 - 29
5.7.4 PROTOCOL .......................................................................... 5 - 31
TERMINOLOGY ............................................................... 5 - 31
POLL RESPONSE .............................................................. 5 - 32
SELECTION SEQUENCE ................................................... 5 - 33
5.7.5 PARAMETER ACCESS ............................................................ 5 - 34
PARAMETER TABLES. ........................................................ 5 - 34
5.7.6 DATA FORMATS .................................................................... 5 - 43
5.7.7 CHARACTER SET ................................................................... 5 - 46
5.7.8 BASIC PROGRAM ................................................................. 5 - 48
5.7.9 ‘C’ PROGRAM ...................................................................... 5 - 50
5.7.10 COMMUNICATIONS PROBLEMS .......................................... 5 - 58
5.8 RETRANSMISSION OPTION ............................................... 5 - 59
5.8.1 INTRODUCTION ................................................................... 5 - 59
5.8.2 SIGNAL WIRING .................................................................. 5 - 60
5.8.3 CONFIGURATION PAGES ..................................................... 5 - 60
RE-TRANSMISSION SOURCE ............................................ 5 - 60
RE-TRANSMISSION OUTPUT RANGE ................................. 5 - 60
RE-TRANSMISSION LOW AND HIGH OUTPUTS ................. 5 - 60
5.8.4 CALIBRATION ....................................................................... 5 - 61
INITIAL SET-UP ................................................................. 5 - 61
CALIBRATION .................................................................. 5 - 61
5.9 TRANSMITTER POWER SUPPLY OPTION............................... 5 - 62
5.9.1 WIRING ............................................................................... 5 - 63
SUPPLY VOLTAGE WIRING ................................................ 5 - 63
FUSES ............................................................................ 5 - 63
SIGNAL WIRING ............................................................. 5 - 63
List of contents (Cont.)
Section
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