Omron CS1W-CLK12-V1, Operation Manual

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Introduction Section 6-1
2. With the message service, there is no guarantee that a message to a re-
mote node will reach its destination. It is always possible that the message
may be lost in transit due to noise or some other condition. When using the
message service, it is advisable to prevent this situation from occurring by
performing resend processing at the node where instructions are issued.
With the SEND, RECV, and CMND instructions, resend processing is per-
formed automatically once the number of retries has been set, so be sure
to specify a number other than “0” for the number of retries.
Example: Commands for
CVM1, CV-series and CS-
series PLCs
Type of command Code CS CVM1/
CV
For memory areas (CIO,
DM, EM, TC, transition,
step, forced ON/OFF) MEMORY AREA READ 0101 Yes Yes
MEMORY AREA WRITE 0102 Yes Yes
MEMORY AREA FILL 0103 Yes Yes
MULTIPLE MEMORY
AREA READ 0104 Yes Yes
MEMORY AREA
TRANSFER 0105 Yes Yes
For parameter areas (PLC
system setting, I/O table
registration, routing table,
etc.) PARAMETER AREA
READ 0201 Yes Yes
PARAMETER AREA
WRITE 0202 Yes Yes
PARAMETER AREA
CLEAR 0203 Yes Yes
For program areas (UM) PROGRAM AREA PRO-
TECT 0304 Yes Yes
PROGRAM AREA PRO-
TECT CLEAR 0305 Yes Yes
PROGRAM AREA READ 0306 Yes Yes
PROGRAM AREA
WRITE 0307 Yes Yes
PROGRAM AREA
CLEAR 0308 Yes Yes
PLC mode RUN 0401 Yes Yes
STOP 0402 Yes Yes
PLC model data CONTROLLER DATA
READ 0501 Yes Yes
CONNECTION DATA
READ 0502 Yes Yes
PLC status data CONTROLLER STATUS
READ 0601 Yes Yes
CYCLE TIME READ 0620 Yes Yes
PLC internal clock CLOCK READ 0701 Yes Yes
CLOCK WRITE 0702 Yes Yes
Messages MESSAGE READ 0920 Yes Yes
MESSAGE CLEAR Yes Yes
FAL/FALS READ Yes Yes
Access rights ACCESS RIGHT
ACQUIRE 0C01 Yes Yes
ACCESS RIGHT
FORCED ACQUIRE 0C02 Yes Yes
ACCESS RIGHT
RELEASE 0C03 Yes Yes