Omron CJ Series User Manual

1 Features and System Configuration
1-14
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Message
Communica-
tions
Reading slave device diagnostics The MEMORY AREA READ (0101) command can be used to
obtain the last received Slave Diagnostics message.
Clearing the Error Log Clearing the Error Log with the ERROR LOG CLEAR (2103) com-
mand.
PROFIBUS DP messages The PROFIBUS MESSAGE SEND (2809) command can be used to
send PROFIBUS DP and PROFIBUS DP-V1 messages over the
PROFIBUS network from the CPU.The following services can be
initiated:
• PROFIBUS DP services:
• Get_Cfg
• Set_Slave_Add
• Rd_Inp
• Rd_Outp
• PROFIBUS DP-V1 Class 1 services:
• MSAC1 - Read
• MSAC1 - Write
• PROFIBUS DP-V1 Class 2 services:
• MSAC2 - Initiate
• MSAC2 - Read
• MSAC2 - Write
• MSAC2 - Abort
Explicit Messages The EXPLICIT MESSAGE SEND (2801) command can be used to
send CIP based messages to OMRON slave devices using PROFI-
BUS DP-V1 Class 2 messages.
Error history size and storage The PROFIBUS Master Unit supports storage of up to 80 error
events, including time stamps in volatile memory. 16 error events
can be logged in non-volatile memory.
Words allo-
cated in the
memory used
for CJ-series
Unit
I/O port (without power OFF retention)
(Access via the device variables for CJ-
series Unit)
25 words/Unit (allocation for one Unit)
1 word for the software switches, 1 word for the Global-Control
command, 21 words for status, 2 words reserved
I/O port (with power OFF retention)( 100 words/Unit (allocation for one Unit)
No exchange, Reserved for future use
User-set allocations Any I/O memory (Set with device-variables for CJ-series Unit and
CX-ConfiguratorFDT)
Item Specification

Omron CJ Series Specifications

General

Brand	Omron
Model	CJ Series
Category	Controller
Language	English