Rockwell Automation 1794-XXXX FLEX I/O High-Density Analog Modules - Manual (Page 67)

Publication 1794-UM062A-EN-P - September 2012
Data Tables 59
Range Selection Bits – 1794-IE4XOE2/B and 1794-IE4XOE2XT Analog Combo Module
Channel No. Input
Channel 0 Input
Channel 1 Input
Channel 2 Input
Channel 3 Output
Channel 0 Output
Channel 1
F0 C0 F1 C1 F2 C2 F3 C3 F4 C4 F5 C5
Decimal Bits
(Octal Bits) 00 08
(10) 01 09
(11) 02 10
(12) 03 11
(13) 04 12
(14) 05 13
(15)
4…20 mA 1 0 1 0 1 0 1 0 1 0 1 0
0…10V DC/0…20 mA 0 1 0 1 0 1 0 1 0 1 0 1
-10…10V DC 1 1 1 1 1 1 1 1 1 1 1 1
Off 0 0 0 0 0 0 0 0 0 0 0 0
Where: C = Configure select bit
F = Full range bit
Off = When configured to off, individual channels will return 0V.
Word/Bit Descriptions – 1794-IE4XOE2/B and 1794-IE4XOE2XT Analog Combo Module
Word Decimal Bit Definition
Read word 1 Bits 00…14
(00…16) Channel 0 analog data – 12-bit left justified two’s complement
number; unused lower bits are zero; 4…20 mA uses all 16 bits.
Bit 15 (17) Channel 0 analog date sign bit.
Read word 2 Bits 00…14
(00…16) Channel 1 analog data – 12-bit left justified two’s complement
number; unused lower bits are zero; 4...20 mA uses all 16 bits.
Bit 15 (17) Channel 1 analog date sign bit.
Read word 3 Bits 00…14
(00…16) Channel 2 analog data – 12-bit left justified two’s complement
number; unused lower bits are zero; 4…20 mA uses all 16 bits.
Bit 15 (17) Channel 2 analog data sign bit.
Read word 4 Bits 00…14
(00…16) Channel 3 analog data – 12-bit left justified two’s complement
number; unused lower bits are zero; 4…20 mA used all 16 bits.
Bit 15 (17) Channel 3 analog data sign bit.
Read word 5 Bit 00…03 Underrange bits (U)- for individual channels (4...20mA current inputs
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 is at or below 4 mA.
Bits 04…05 Wire Off bits (W) – Current outputs only – When set (1), the wire on
the current output is broken or the load resistance is too high. Bit 00
corresponds to input channel 0, bit 01 corresponds to input channel 1,
and so on.
Bits 06…14
(06…16) Not used – set to 0.
Bit 15 (17) 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 3) are 0 (unconfigured state). The
configuration register can be cleared by either a reset, or by the user
writing all zeroes to it.