1 Features and System Configuration
1-12
CJ-series PROFIBUS Slave Unit Operation Manual for NJ-series CPU Unit (W510)
The example below shows a slave configuration screen. The CJ1W-PRT21 is configured as a slave
with 2 words input for status information and (16+16+4) 36 words input data and (16+16+8) 40 words
output data. The terms input and output are to be interpreted as seen from the PROFIBUS-DP master
unit.
Input data format Defines how the Host CPU data words are mapped to a PROFIBUS data exchange telegram.
• Motorola
• Intel
See 3-3 I/O Data Format for details.
Input from slave PLC
area
Selects the area from which the unit will read PROFIBUS input data to be sent to the master.
Input area start address Sets the start address in the host CPU from which the PROFIBUS input data to be sent to the mas-
ter will be read.
Slave PLC status indica-
tion
Selects if the CPU status information should occupy the first word of input data to the PROFIBUS
Master (see 3-8 CPU Status Information)
Example Configuration
Name Description
List of available
module types,
defined in GSD file
I/O data limits,
defined in GSD file
Total I/O sizes,
calculated by
Configurator
List of modules,
selected by user
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