Rockwell Automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I/O Combination Module - Manual (Page 53)

Publication 1769-UM008A-EN-P - November 2001
1769-IF4XOF2 Module Data, Status, and Configuration Channels 4-9
The manipulation of the bits from this file is normally done with
programming software (e.g. RSLogix 500, RSLogix 5000, RSNetworx
for DeviceNet, etc.) during initial configuration of the system. In that
case, graphical screens are typically provided by the programmer to
simplify configuration. However, some systems, like the 1769-ADN
DeviceNet Adapter, also allow the bits to be altered as part of the
control program, using communication rungs. In that case, it may be
beneficial to understand the bit arrangement.
Bit Definitions for Configuration Data
Sign Bit (SGN)
The sign bit is always positive (Bit 15 = zero).
Enable/Disable Input Channel (EIx)
Word 0 bits 4 to 7 (EI0 to EI3) are defined as the input channel
enable/disable bits. These bits allow individual input channels 0
through 3 to be enabled (on) or disabled (off). When a channel is not
enabled, the module provides no current or voltage input to the host
controller.
Table 4.6 Configuration Data File
Wo
rd
Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
Not Used
(1)
(1) Any attempt to write a non-valid (1’s) bit configurations into any not used selection field results in a module configuration er ror.
EI3 EI2 EI1 EI0
FM0
(2)
(2) Not all controllers support these functions. Refer to your controller’s user manual for details.
PM0
(2) Not
Used
(1)
PFE0
(2)
1
Not Used
(1) EO1 EO0
FM1
(2)
PM1
(2) Not
Used
(1)
PFE1
(2)
2 SGN
Channel 0 Fault Value
(2) 0 0 0 0 0 0 0
3 SGN
Channel 0 Program (Idle) Value
(2) 0 0 0 0 0 0 0
4 SGN
Channel 1 Fault Value
(2) 0 0 0 0 0 0 0
5 SGN
Channel 1 Program (Idle) Value
(2) 0 0 0 0 0 0 0