Omron CJ Series User Manual

1 Features and System Configuration
1-12
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
 PROFIBUS DP Class 2 Services
The PROFIBUS Master Unit also supports additional PROFIBUS DP Class 2 services defined in the
PROFIBUS DP standard EN50170, Volume 2 for Master - Slave Communication. These functions
includes the following services:
• Set_Slave_Addr
• Get_Cfg
• Rd_Inp
• Rd_Outp
These services can be invoked from the CPU using message communication.
 PROFIBUS DP-V1 Service
The PROFIBUS Master Unit supports PROFIBUS DP-V1 Class 1 and Class 2 services. Additional
parameter data can be written/read to and from PROFIBUS DP-V1 compatible slave devices. These
services can be initiated either from the CPU or from the associated DTM.
 Configuration
Before the PROFIBUS Master Unit can control the PROFIBUS network, it must be configured using
the dedicated configuration program CX-Integrator FDT. Without this configuration, the Unit will not
be able to achieve data exchange, neither to send any acyclic messages. The configurator is
explained in 1-3 CX-ConfiguratorFDT.
 Troubleshooting Functions
The PROFIBUS Master Unit is provided with a variety of troubleshooting functions for prompt recov-
ery in case of errors:
• Extensive self-diagnostic function at startup
• Data exchange flags, indicating if I/O data is being exchanged with the slave devices
• Diagnostics flags, indicating if new Slave diagnostics data is available
• Extensive status and error flags, indicating the status of the Unit and the PROFIBUS network
• Error log for recording error history data
The CJ1W-PRM21 is a remote I/O Communication units providing PROFIBUS DP and PROFIBUS DP-
V1 Master capabilities. The Unit version number on the side case of the housing indicates supported
functionality. If no version number is shown, the version number is 1.0. The following table lists the
functions supported per version number.
Alternatively, the PROFIBUS DP Master DTM can be used to obtain the Units version number, refer to
3-3-1 Configuration User Interface.
Note Only latest unit version 3.0 is fully supported with NJ-series Controllers. Please consult with
your OMRON representative if unit version 1.0 or 2.0 is used.
1-2-2 Specifications
Model Name Unit Classification Unit Version
Supporting DTM
Version
Functions Supported
CJ1W-PRM21 CPU Bus Unit 3.0 0.3.0.0 • PROFIBUS DP (Class 1) Master
• PROFIBUS DP (Class 2) Master
• PROFIBUS DP-V1 (Class 1) Master
• PROFIBUS DP-V1 (Class 2) Master

Omron CJ Series Specifications

General

Brand	Omron
Model	CJ Series
Category	Controller
Language	English