Rockwell Automation 1769-IF4XOF2 Compact Combination Analog Module - Manual (Page 17)

Compact™ Combination Analog I/O Module 17
Publication 1769-IN057A-EN-P - July 2001
Configuration Data File
The manipulation of the bits from this file is normally done with programming
software (e.g. RSLogix 500, 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 is necessary to understand the
bit arrangement. Refer to the Compact™ Combination Analog I/O Module User
Manual, publication number 1769-UM008A-EN-P 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.
•
PMx = These bits provide Program (Idle) Mode selection for analog output
channels 0 and 1.
Wor
d Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 Not
Used
(1)
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
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)
1 Not
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) 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
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.