Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Manual de usuario Pagina 111

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Block Transfer Write and Block Transfer Read Configurations for 2 Output/2 Input 1771-N Series Modules D–7
Publication 1771ĆUM127B-EN-P - December 2002
DefinitionWord
Decimal Bit
(Octal Bit)
Bit 05
High clamp. This bit is set if alarms are enabled and the output
data is higher than the high clamp value
Bit 06
Rate alarm. This bit is set if alarms are enabled and the output
data changed faster than the programmed ramp rate.
Word 4 continued
Bit 07
Bad data. This bit is set if BCD data format was chosen and
output value was not a legal BCD value.
Word 4 continued
Bits 08 (10)
Bad programming. This bit is set if the most recent BTW
contained improper programming data for this channel
Bit 09 (11)
Bad calibration. This bit is set if the channel has not had a valid
calibration.
Bits 10-14
(12-16)
Not used. Always 0.
Bit 15 (17)
I/O select bit.
0 = output,
1 = input.
This bit is set to 0.
Word 5 Bits 00-17 Channel 1 Raw data sent to DAC.
Words 6 and 7 Same as words 4 and 5, but for channel 2
Bit 00
Underrange bit. This bit is set if the input signal is below the
input channels minimum range.
Bit 01
Overrange bit. This bit is set if the input signal is above the
input channels maximum range.
Bits 02-03 Not used. Always 0.
Bit 04
Low alarm. This bit is set if alarms are enabled and the input
signal is lower than the low alarm setpoint.
Bit 05
High alarm. This bit is set if alarms are enabled and the input
signal is higher than the high alarm setpoint.
Word 8
Bit 06
Rate alarm. This bit is set if alarms are enabled and the input
signal changed at a rate faster than the input rate alarm
setpoint.
Bit 07 Not used. Always 0.
Bit 08 (10)
Bad program. This bit is set if any of the channel level
programming data is illegal.
Bit 09 (11)
Bad calibration. This bit is set if the channel has not had a valid
calibration.
Bits 10-14
(12)-16
Not used. Always 0.
Bit 15 (17)
I/O select bit.
0 = output,
1 = input.
This bit is set to 1.
Word 9
Bits 00-15
(00-17)
Channel 3 input data.
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