Reset Output Or Hold Last Value On Fault (Configuration Bits 7 And 15); Setting The Output Data Limits (Or User-Defined Scale) - Spectrum Controls SLC 500 User Manual

3-8 Chapter 3: Configuring the 1746sc-INO4I
Data Format
For the user-defined scale, the data in output words 6 and 7 determine the count limits. See the next
3
subsection, Optional: Setting the Output Data Limits (or User-Defined Scale), for information on the User-
Defined Scale data format.
User's Manual Pub. 0300128-04 Rev. A
Selected
Output
Range
0–10 V
0–5 V
1–5 V
0–20 mA
0–21 mA
4–20 mA
Reset Output Or Hold Last Value On Fault (configuration
bits 7 and 15)
Use this bit to select how your module responds to a fault:
• If you set this bit to 1, your module holds the output signal at its last
value when it detects a fault.
• If you set this bit to 0, your module resets the output signal to the power-
up setting (0 V or 0 mA) when it detects a fault.

Setting the Output Data Limits (or User-Defined Scale)

Words 6 and 7 of the output image file (addresses O:e.6 and O:e.7) let you define
either:
the low and high values of the output data limits.
•
OR
the low and high values of the user-defined scale, if the User-Defined
•
Scale data format is selected.
If you do not want to use user-defined scaling or output data limiting, set output
words 6 and 7 to zero. Setting output words 6 and 7 to zero disables output data
limiting and invalidates user-defined scaling.
Because they share the same output words, you cannot use output data limiting
with the User-Defined Scale data format.
Important – The values in output words 6 and 7 apply to all four channels. If
you want to use user-defined scaling or output data limiting, you must set all four
channels to the same data format.
Data Value (counts)
Min. Max.
See footnote 3
Corresponding Signal
Min. to Max.
-0.50 V - +10.25 V
-0.50 V - +5.50 V
+0.50 V - +5.50 V
0.0 mA - +20.5 mA
0.0 mA - +21.5 mA
+3.5 mA - +20.5 mA