Allen-Bradley 1794-IE8 Series B

5–5 How Communication Takes Place and I/O Image Table Mapping with the DeviceNet Adapter
Publication 17946.5.2 - May 1996
DefinitionDecimal BitWord
Read Word 5
Bits 00-14
Channel 4 analog data - 12bit left justified two's complement
number; unused lower bits are zero; 420mA uses all 16 bits.
Read
Word
5
Bits 15 Channel 4 analog data sign bit.
Read Word 6
Bits 00-14
Channel 5 analog data - 12bit left justified two's complement
number; unused lower bits are zero; 420mA uses all 16 bits.
Read
Word
6
Bits 15 Channel 5 analog data sign bit.
Read Word 7
Bits 00-14
Channel 6 analog data - 12bit left justified two's complement
number; unused lower bits are zero; 420mA uses all 16 bits.
Read
Word
7
Bits 15 Channel 6 analog data sign bit.
Read Word 8
Bits 00-14
Channel 7 analog data - 12bit left justified two's complement
number; unused lower bits are zero; 420mA uses all 16 bits.
Read
Word
8
Bits 15 Channel 7 analog data sign bit.
Bits 00-07
Underrange bits (U) for individual channels (420mA current
input only)- Bit 00 corresponds to input channel 0, bit 01
corresponds to input channel 1, and so on. When set (1),
indicates either a broken or open input wire, or input current at
or below 4mA.
Read Word 9
Bits 0814
Not used - set to 0.
Bit 15
Power Up bit - included in series B modules only. This bit
is always 0 in series A modules. This bit is set to 1 when
all bits in the configuration register (write word 1) are 0
(unconfigured state). The configuration register can be
cleared by either a reset, or by the user writing all zeroes to it.
Write Word 1
Bits 00-07
Full range bits (F) for individual channels - Bit 00 corresponds
to input channel 0, bit 01 corresponds to input channel 1, and
so on. Refer to range selection above.
Write Word 1
Bits 08-15
Configure select bits (C) for individual channels - Bit 08
corresponds to input channel 0, bit 09 corresponds to input
channel 1, and so on. Refer to range selection above.
Write Word 2 Bits 00-15 Not used - set to 0.
Write Word 3 Bits 00-15 Not used - set to 0.
Write Word 4 Bits 00-15 Not used - set to 0.
Write Word 5 Bits 00-15 Not used - set to 0.
Write Word 6 Bits 00-15 Not used - set to 0.