
ER5000
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225
Internal Variables
ER5000 Internal Variables
The ER5000 has a number of internal variables which can be
accessed via the USB or RS485 interface. The most commonly
used variables are listed below. The variable index number,
name and description are shown. The index number is the value
selected from the drop-down list in the
Variables
field of
The Read/
Write Panel
in
The Power User Tab
of the ERTune™ program to
access the specified variable. A complete list of internal variables
is shown in
Table 27
.
ER5000 Setpoint and Feedback Variables
NOTE
NOTE
CAUTION
CAUTION
WARNING
WARNING
For variable #37 (ID_SETPOINT) and variable #44 (ID_FEEDBACK),
a value of 400 counts is 0% and 3700 counts is 100%. To convert between
counts and percent, use the following formulas:
•
value_percent = (value_counts - 400) * 100 / 3,300
•
value_counts = ( value_percent * 3,300 /100) + 400
37 ID_SETPOINT
This is the controller’s setpoint.
43 ID_SETPOINT_FLAG
This variable determines the source of the setpoint,
variable #37 (ID_SETPOINT).
•
0 => setpoint from A/D, analog setpoint input
•
1 => setpoint from RS485 or USB network, typically a PC
•
2 => setpoint from internal Profile
•
3=> setpoint from A/D, analog setpoint input, while in
Profile Mode
•
4=> Monitor Setpoint from external device while running
the ERTune™ program
44 ID_FEEDBACK
This is the controller’s overall feedback signal. For internal sensor
mode it is the same as inner feedback. For external sensor
mode or cascade mode it equals the outer loop feedback.
87 ID_EXT_FEEDBACK_SOURCE
This variable determines the source of the external feedback.
•
0 => feedback from the compensated external sensor, see
variable #5 (ID_COMPENSATED_EXTERNAL_SENSOR)
•
1 => feedback from extra analog input 1, see variable #77
(ID_COMPENSATED_EXTRA_AD1)
Содержание Tescom ER5000 Series
Страница 2: ...2 Safety Installation Operations Precautions ...
Страница 9: ...9 Table of Contents ...
Страница 14: ...14 Features and Specifications ...
Страница 25: ...25 What s New ...
Страница 29: ...29 How It Works ...
Страница 44: ...44 Glossary of Terms ...
Страница 57: ...57 Getting Started ...
Страница 76: ...76 Installation Variations ...
Страница 111: ...111 The ERTune Program ...
Страница 116: ...116 The ERTune Program Basic Features ...
Страница 187: ...187 The ERTune Program Power User ...
Страница 196: ...196 ER5000 Software Development Support ...
Страница 202: ...202 Troubleshooting ...
Страница 221: ...221 Internal Variables ...
Страница 236: ...236 Certifications and Warranty ...
Страница 241: ...241 Appendix A Setting up the ERTune Program on Windows 8 PCs ...