Omron CJ Series Operation Manual page 54

1 Features and System Configuration
Message Reading slave device diagnostics
Communica-
tions
Clearing the Error Log
PROFIBUS DP messages
Explicit Messages
Error history size and storage
Words allo- I/O port (without power OFF retention)
cated in the (Access via the device variables for CJ-
memory used series Unit)
for CJ-series
I/O port (with power OFF retention)(
Unit
User-set allocations
1-14
Item
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Specification
The MEMORY AREA READ (0101) command can be used to
obtain the last received Slave Diagnostics message.
Clearing the Error Log with the ERROR LOG CLEAR (2103) com-
mand.
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
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.
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.
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
100 words/Unit (allocation for one Unit)
No exchange, Reserved for future use
Any I/O memory (Set with device-variables for CJ-series Unit and
CX-ConfiguratorFDT)