Rockwell Automation Allen-Bradley 1769-IQ16 - Configuration Data File

Rockwell Automation Publication 1769-IN088A-EN-P - February 2011 63
I/O Memory Mapping Chapter 3
Configuration Data File
The manipulation of the bits from this file is normally done with programming
software, such as RSLogix 500, RSLogix 5000, or RSNetWorx for DeviceNet,
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 is
necessary to understand the bit arrangement. Refer to the Compact Analog I/O
Combination Module User Manual, publication number
1769-UM008
for additional details.
The bits are defined as follows:
• SGN = Sign bit in two’s complement format. The sign of the data for the
1769-IF4XOF2 must be positive (Bit 15 = 0) or a configuration error
occurs.
• EIx = Individually enable or disable input channels 0 through 3 using these
bits. When a channel is not enabled, the module provides no current or
voltage input to the host controller.
• EOx = Individually enable or disable output channels 0 and 1 using these
bits. When a channel is not enabled, the module does not produce current
or voltage.
Word
Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0Not
Used
(1)
Not
Used
(1)
(1) Any attempt to write a nonvalid (1s) bit configurations into any not used selection field results in a module
configuration error.
Not Used
(1)
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)
1Not
Used
(1)
Not
Used
(1)
Not Used
(1)
Not
Used
(1)
Not
Used
(1)
EO1 EO0 FM1
(2)
PM1
(2)
Not
Used
(1)
PFE1
(2)
2 SGN Channel 0 Fault Value
(2)
0000000
3 SGN Channel 0 Program (Idle) Value
(2)
0000000
4 SGN Channel 1 Fault Value
(2)
0000000
5 SGN Channel 1 Program (Idle) Value
(2)
0000000
TIP
The enable bit remains set even when a channel is configured
incorrectly. However, a configuration error for that channel is set.
When this occurs, disable the channel, reconfigure the channel
correctly, and then enable the channel.