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126
Introduction
Section 6-1
using the message service, it is advisable to prevent this situation from oc-
curring by performing resend processing at the node where instructions
are issued. With the SEND, RECV, and CMND instructions, resend pro-
cessing is performed 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/CJ-series PCs
Type of command
Code
CS/
CJ
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 TRANS-
FER
0105
Yes
Yes
For parameter areas (PC
system setting, I/O table reg-
istration, 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
PC mode
RUN
0401
Yes
Yes
STOP
0402
Yes
Yes
PC model data
CONTROLLER DATA READ 0501
Yes
Yes
CONNECTION DATA READ
0502
Yes
Yes
PC status data
CONTROLLER STATUS
READ
0601
Yes
Yes
CYCLE TIME READ
0620
Yes
Yes
PC 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
Error data
ERROR CLEAR
2101
Yes
Yes
ERROR LOG READ
2102
Yes
Yes
ERROR LOG CLEAR
2103
Yes
Yes
Содержание CVM1-CLK21
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