Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual User Manual
Page 73
2–53
How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
Definition
Decimal Bit
(Octal Bit)
Word
Word 4
Input Channels 0 and 1 Filter Selections Refer to Setting the Input Filters
Bits 00-01
Channel 0 Filter Setting
Bits 04-07
Channel 1 Filter Setting
Bit 8-15
(11-17)
Set to 0.
Word 5
Channel Configuration
Bits 00-03
Input Channel 0 Configuration - Refer to Configuring Your Input Channels
Bits 04-07
Input Channel 1 Configuration - Refer to Configuring Your Input Channels
Bits 08-11
(10-13)
Output Channel 0 Configuration - Refer to Configuring Your Input Channels
Bits 12-15
(14-17)
Output Channel 1 Configuration- Refer to Configuring Your Input Channels
Word 6
Bits 00-14
(00-16)
Real Time Sample Interval - Programs the interval of the real time sample. Can be
varied from 0 to 30 seconds (30000 decimal). Resolution is in ms with granularity in
5ms steps.
Bit 15 (17)
Set to 0.
Word 7
Bit 00-03
Channel calibration selection bit. When this bit is set (1), the channel can be
calibrated using the initiate calibration bit (IC). Bit 00 corresponds to input channel 0,
bit 01 corresponds to input channel 1, it 02 corresponds to output channel 0, bit 03
corresponds to output channel 1
Bit 04
Gain/Offset selection bit (GO). - When this bit is set (1), a reset (0), set (1), reset
(0) pattern of the calibration clock bit (CK) causes a gain calibration to occur. When
this bit is set to 0, a reset (0), set (1), reset (0) pattern of the calibration clock bit (CK)
causes an offset calibration to occur.
Bit 05
Calibration clock bit (CK). - When this bit is set to 1 (calibration mode), the
calibration coeffiicient for the selected channels is accepted. When this bit is reset
(0), the accepted calibration coefficients are stored in the selected channels, applied,
and the calibration mode exited. Monitor status bits DN and BD for succesful
calibration.
Bit 06
Quick Calibration bit (QK). - Normally reset (0). When this bit is set (1) during a
calibration sequence, the calibration coefficient is stored to all related configurations
for the selected channels. NOTE: This method of calibration quickly calibrates the
selected channels, you will not be within the rated accuracy of the module.
Word 7
Bit 07
Revert to defaults bit (RV). - Normally reset (0). When set (1) during a calibration
procedure, default values for selected channels are used for the calibration
coefficient.
Bits 08-09
(10-11)
Not used. Set to 0.