5–9
How Communication Takes Place and I/O Image Table Mapping with the DeviceNet Adapter
Publication 17946.5.2 - May 1996
Analog Combo Module (1794IE4XOE2 Series B) Image Table
Mapping
Module Image
I/O Image
Input Data Channel 0
Input Data Channel 1
Input Data Channel 2
Input Data Channel 3
Output Data Channel 0
Output Data Channel 1
Underrange & Diag.
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Full Range and Configure Select
Not used
Input Size
Output Size
0 to 4 Words
0 to 5 Words
Read
Write
OE
PU
Analog Combo Module (1794-IE4XOE2/B) Read
Decimal Bit
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Size
Octal Bit
17
16
15
14
13
12
11
10
07
06
05
04
03
02
01
00
Read Words
S
Analog Value Input Channel 0
Read Word 1
S
Analog Value Input Channel 1
Read Word 2
S
Analog Value Input Channel 2
Read Word 3
S
Analog Value Input Channel 3
Read Word 4
PU
Not used - set to 0
W1 W0 U3
U2
U1
U0
Read Word 5
Where:
PU = Power up bit - included in series B modules only.
W = Diagnostic bits for current output wire broken or load resistance high. (Not used on voltage outputs.)
U = Underrange bits for 420mA inputs