Rockwell Automation 1790D-NOV2/TNOV2 CompactBlock LDX Analog Modules - Manual (Page 84)

Publication 1790-UM001A-EN-P - March 2002
B-16 PROFIBUS Modules Installation, Wiring, Module Data, Status and Channel Configuration
1790P-TNOC2 Data
Structure Analog Output Image
The output image file represents data words. Output words 0 and 1
hold the output data that represents the value of the analog outputs
for channels 0 and 1. Analog output data is presented as
raw/proportional.
Output words 2 and 3 contain output data for two optional discrete
output expansion modules.
Analog output data is presented as raw/proportional. The full 12-bit
resolution is over the entire span of the output full scale range, as
shown in Table B.6.
The output data files are the same as those shown for the
1790D-TNOC2. See page 4-2 for more information.
Output Fault and Idle States For PROFIBUS modules, analog outputs reset to zero (0) under fault
(communication failure) and idle (processor in program mode) states.
The values in the output data file are retained. Once a fault or idle
condition is cleared, the retained output values are sent to the analog
output channels.
Configuring PROFIBUS
Analog Modules You can use the PROFIBUS configuration software (with easy-to-use
GSD files) to configure the CompactBlock LDX analog modules
(1790P-TN4CO & 1790P-TNOC2).
To obtain GSD files, go to:
http://www.ab.com/networks/gsd
To read how to install the GSD file for your module, use the SST
PROFIBUS configuration tool documentation (e.g. online help). The
next section shows how to configure your analog module with the
SST PROFIBUS configuration tool.
Table B.6
Output Full Scale
Range: HEX Data Range: Decimal Data
Range: Input Resolution:
0-20mA 0000-0FFF 0-4095 4.88
µ
A