Spectrum Controls 2085-IF4XOF4-SC, User Manual

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3-22 Chapter 3: Configuring the 2085-IF4XOF4-SC Using CCW
User’s Manual Pub. 0300307-01 Rev. A
Channel Word Usage
Output Ch2 AO_02 Signed 16-bit INT
Output Ch3 AO_03 Signed 16-bit INT
Unlatch
Bits
Word
Index
High Byte Low Byte
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Unlatch
Alarm
Ch3 – Ch0
AO_04 -
UL
D
3
UOR
3
UUR
3 -
UL
D
2
UOR
2
UUR
2 -
UL
D
1
UOR
1
UUR
1 -
UL
D
0
UOR
0
UUR
0
Output Ch<x> (AO_03:00)
This word is read by the module and scaled to the appropriate analog output level
based on the Data Format and Range Type selections. It is considered a signed
16-bit integer with maximum values ranging from -32768 to +32767.
Unlatch Alarm Bits (AO_04)
When the Alarm Latch Enable bit is configured as enabled through the Output
Channel Configuration (C_00), the Under Range, Over Range, or LD alarm
status bit on the Output Channel Status (AI_02:01) remain set even when the
corresponding condition is cleared.
The only way to clear the alarm is to set the appropriate Unlatch bit on this word.
Once it has been set, and the alarm condition has been cleared, the Unlatch bit
should be cleared manually as well to allow subsequent latching. If the Alarm
Latch Enable bit is not enabled, these bits are ignored by the module.
Bit definitions for Unlatch Alarm Bits are provided in the following table:
Bit Name Description
12, 8, 4, 0 UUR<n>
Unlatch Under Range <channel>
Set this bit to clear the channel under range alarm.
13, 9, 5, 1
UOR<n>
Unlatch Over Range <channel>
Set this bit to clear the channel over range alarm.
14, 10, 6, 2 ULD<n>
Unlatch Load Error <channel>
Set this bit to clear the channel load error alarm.
The LD status bit on the Output Channel Status (AI_02:01) is always
active and may be latched and unlatched any time if the Alarm Latch
Enable bit is set to enabled.
15, 11, 7, 3
Not Used Bits marked as Not Used have no output control functionality.
Product Features
The following sections provide information on user-configurable parameters.