412
CCOM, CCOMP
(5) At the point of the execution of the COM instruction, the CPU module temporarily stops the processing of the sequence
program, and performs specified processing.
(6) The COM instruction can be used in a sequence program any number of times.
However, note that the scan time of the sequence program will be lengthened by the time taken for the processing
selected in SD778.
(7) Only with the Universal model QCPU and LCPU, interruption is enabled during the execution of the COM instruction.
However, note that the data can be separated if the refresh data is used by an interrupt program etc.
(8) With the Built-in Ethernet port QCPU and LCPU, processing time may be increased if the service process was executed
by the COM instruction while the built-in Ethernet ports are in Ethernet connection.
1. The programs in which the COM instruction cannot be used are shown below:
• Low-speed execution type programs
• Interrupt programs
• Fixed scan execution type programs
2. For the redundant CPU, there are restrictions on use of the COM instruction. Refer to the manual below for details.
• QnPRHCPU User's Manual (Redundant System)
Operation Error
(1) There is no operation error in the COM instruction.
Function
See Page 409, Section 7.6.10 for details about function.
Operation Error
7.6.11 CCOM , CCOMP Select re fresh
7.6.11
CCOM, CCOMP
• QnU(D)(H)CPU, QnUDE(H)CPU: The serial number (first five
digits) is "10102" or later.
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn Constants Other
Bit Word Bit Word
–– ––
Error
code
Error details
Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4100
When the CCOM(P) instruction was executed in the QnUD(H)CPU
whose serial number (first five digits) is "10101" or earlier, an error
occurs.
–– –– –– –– ––
0
END
0
END
0
Execution of COM
instruction
Execution of COM
instruction
Specified processing Specified processing
Basic
High
performance
Process
Redundant
Universal
LCPU
Ver.
CCOM
CCOMP
CCOM
CCOMP
Command
Command
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