3
TABLE OF CONTENTS
Section:
Page:
List of Figures…………………………………………………………………… 4
List of Tables……………..……………………………………………………… 4
Introduction……………………………………………………………………... 5
1.0
Installation……………………………………………………………..…… 5 - 8
2.0
Programming…………………………………………………………..…… 9 – 33
2.1 Front Panel Programming…………………………………………….. 9
2.2 Serial Port Programming – ASCII …………………………………… 13 - 17
2.3 Serial Port Programming – MODBUS……………………………….. 18 – 33
2.3.1 MODBUS Packet Format – Read……………………………….. 19
2.3.2 MODBUS Packet Format – Write………………………………. 20
2.3.3 MODBUS Packet Format – Error Exception Response……….. 21
2.4 Operating Modes………………………………………………………. 34 – 37
2.5 Programming Notes……………………………………………………. 38
3.0
Options…………………………………………………………………..….. 39 – 48
3.1 Analog Output……………………………………………………..…… 39
3.2 High / Low Relay Limits………………………………………..……… 40 – 45
3.2.1 Tap Change Acknowledgement.………………………………… 41
3.2.2 High Tap / Low Tap……………………………………………… 41
3.2.3 Total Tap Change Count………………………………………… 42
3.2.4 On-Tap Alarm……………………………………………………. 42
3.2.5 Up-To & Down-To Count………………………………….…….. 44
3.2.6 Pass-Through-Neutral Alarm…………………………….……… 44
3.2.7 One-Direction Change Count…………………………….……… 45
3.2.8 FA 25 & FA 27 Error Alarm…………………….…………….… 45
3.3 Serial RS-232…………………………………………………...……….. 46
3.4 Serial RS-485 .……………………………………...………………….... 47
3.5 Input Isolation…………………………………………………...……… 48
4.0
Field Calibration and Test………………………………………...…….…. 48 – 49
5.0
Error Codes…………………………………………………………….……. 50
6.0
Specifications…………………………………………………………….….. 51
