Rockwell Automation 1793-OE2S FLEX INTEGRA ANALOG MOD - Manual (Page 47)

Publication 1793-6.5.1 - April 1999
5-8 How Communication Takes Place and I/O Image Table Mapping with the DeviceNet Adapter
Word/Bit Descriptions for the 1793-OE2 and -OE2S Analog Output Module Write
Word
Decimal Bit
(Octal Bit)
Definition
Write Word 1
Bits 00-14
(00-16)
Channel 0 analog data – 12-bit left justified two’s complement number; unused
lower bits are zero; 4-20mA uses all 16 bits.
Bits 15 (17) Channel 0 analog data sign bit.
Word 2
Bits 00-14
(00-16)
Channel 1 analog data – 12-bit left justified two’s complement number; unused
lower bits are zero; 4-20mA uses all 16 bits.
Bits 15 (17) Channel 1 analog data sign bit.
Word 3
Bits 00-14
(00-16)
Channel 2 analog data – 12-bit left justified two’s complement number; unused
lower bits are zero; 4-20mA uses all 16 bits.
Bits 15 (17) Channel 2 analog data sign bit.
Word 4
Bits 00-14
(00-16)
Channel 3 analog data – 12-bit left justified two’s complement number; unused
lower bits are zero; 4-20mA uses all 16 bits.
Bits 15 (17) Channel 3 analog data sign bit.
Word 5
Bits 00-03
Multiplex control bits (M) for individual channels. These bits control the safe
state analog outputs. – Bit 00 corresponds to output channel 0, bit 01
corresponds to output channel 1, and so on.
1 = use words 0 or 1 as directed by channel number n
0 = use words 10 or 11 as directed by channel number n
When bits 00-01 are all cleared (0) simultaneously by a communication error or
user choice thru the programmable controller program, word 6 full range and
configure select bits are preserved at their last setting.
Bits 04-15 (04-17) Not used – set to 0.
Word 6
Bits 00-01
Full range bits (F) for individual channels – Bit 00 corresponds to output channel
0, and bit 01 corresponds to output channel 1.
Bits 02-07 Not used – set to 0.
Bits 08-09 (10-11)
Configure select bits (C) for individual channels – Bit 08 corresponds to output
channel 0, and bit 09 corresponds to output channel 1.
Bits 10-15 (12-17) Not used – set to 0.
Words 7 thru
10
Bits 00-15
(00-17)
Not used – set to 0.
Words 11-14 Bits 00-15
(00-17)
Reserved