AXIOMATIC AX180800, Руководство пользователя

Страница: 3 / 72

UMAX180800, 20 Thermocouple, 2 RTD, 4 Inputs, 6 Relays Dual CAN Controller Version 1
iii
TABLE OF CONTENTS
1 INTRODUCTION ................................................................................................................. 5
2 CONTROLLER DESCRIPTION .......................................................................................... 6
2.1 Hardware Block Diagram ............................................................................................. 6
2.2 Software Organization ................................................................................................. 7
2.3 CAN Interface .............................................................................................................. 7
2.3.1 CAN Baud Rate .................................................................................................... 8
2.3.2 J1939 Name and Address .................................................................................... 8
2.3.3 Slew Rate Control ................................................................................................. 9
2.4 The controller has an ability to adjust the CAN transceiver slew rate for better
performance on the CAN physical network, see Miscellaneous ............................................. 9
2.5 Diagnostics .................................................................................................................. 9
2.5.1 Network Bus Terminating Resistors .................................................................... 11
2.6 Modbus TCP Interface ............................................................................................... 11
2.7 Discovery Protocol ..................................................................................................... 13
2.8 Default Settings .......................................................................................................... 13
3 CONTROLLER LOGICAL STRUCTURE .......................................................................... 14
3.1 Function Block Signals ............................................................................................... 15
3.2 Output Signal Sources ............................................................................................... 15
3.3 Universal Inputs ......................................................................................................... 16
3.3.1 Voltage Measurements ....................................................................................... 18
3.3.2 Current Measurements ....................................................................................... 18
3.3.3 Discrete Voltage Level ........................................................................................ 18
3.3.4 Frequency and PWM .......................................................................................... 19
3.3.4.1 Special Conditions........................................................................................... 20
3.3.5 Diagnostics ......................................................................................................... 20
3.4 Thermocouple Input Function Block ........................................................................... 21
3.4.1 Thermocouple Input Cold Junction Compensation ............................................. 21
3.4.2 Thermocouple Input Diagnostic Parameters ....................................................... 21
3.4.3 Thermocouple Input Warning and Shutdown ...................................................... 22
3.5 RTD Input Function Block .......................................................................................... 22
3.5.1 RTD Coefficients ................................................................................................. 22
3.5.2 Warning and Shutdown Limits ............................................................................ 23
3.6 Relay Output Function Block ...................................................................................... 23
3.6.1 Relay Output Functionality .................................................................................. 23
3.6.2 Relay Output Control / Enable Sources / Override Source ................................. 24
3.6.3 Relay Output Enable ........................................................................................... 24
3.6.4 Relay Output Override ........................................................................................ 25
3.6.5 Unlatch Source ................................................................................................... 26
3.7 Math Function Block .................................................................................................. 26
3.8 Conditional Block ....................................................................................................... 27
3.9 Set / Reset Latch Function Block ............................................................................... 28
3.10 Lookup Table Function Block ..................................................................................... 28
3.11 Programmable Logic Function Block ......................................................................... 29
3.12 Global Parameters ..................................................................................................... 30
3.13 Miscellaneous ............................................................................................................ 31
3.14 Diagnostics ................................................................................................................ 31