APPENDICES
Appendix 4 Sample Programs when Using CC-Link
Appendix 4.3 Devices Used in Programs
App - 14
9
PROCESSING TIME
FOR REDUNDANT
SYSTEMS
APPENDICESINDEX
Appendix 4.3 Devices Used in Programs
(1) CPU Module Devices
Device Nos. used in sample programs and their applications are shown in Table
App.10 and Table App.11.
(2) CC-Link Master/Local Module Devices
* 1: Indicates the device number on CPU side in (3) of this Section.
Table App.10 CPU Module Devices
Device Number Application Remarks
SM400 Always On -
SM402 ON for 1 scan only after RUN -
SM1515 Control system judgment flag
Control system: SM1515:ON,SM15165:OFF
Standby system: SM1515:OFF,SM1516:ON
SM1516 Standby system judgment flag
SM1518
Standby system to control system switching status
flag
-
SM1592 Enable manual system switching flag
OFF : Manual switching prohibited
ON : Manual system switching enabled
M100 Enable control program execution flag
OFF : control program execution not possible
ON : control program execution possible
M101 System switching execution flag
OFF : system switching must not be executed
ON : system switching executed
M102 System B first startup system switching flag
OFF : system switching must not be executed
ON : system switching executed
M202 SP.CONTSW instruction error flag
OFF : normal
ON : error
M4531 During data link execution
OFF :Not executed data link
ON :During data link execution
D100-D107
Interrupt enable or interrupt disable (IMASK
instruction)
0: interrupt prohibited
1: interrupt enabled
SD1601 System switching condition 16: system switching instruction
SD1602 System switching instruction argument Argument specified by SP.CONTSW instructions
I41 Pointer performed at STANDBY error
Switches the stand-by master station in CC-Link to
the master station
Table App.11 CC-Link Master/Local Module Devices
Device Number
*1
Application Remarks
X40 Module error
OFF : Module normal
ON : Module error
X41 Host data link status
OFF : Data link is stopped
ON : Data linking in progress
X4F Module ready
OFF : Operation not possible
ON : Operation possible
SB40C Forced master switching
OFF : Not requested
ON : Requested
SB401 Refresh instruction at standby master switching
OFF : Not instructed
ON : Instructed
SB442
Refresh instruction acknowledgment status at
standby master switching
OFF : Not executed
ON : instruction acknowledged
SB443
Refresh instruction complete status at standby
master switching
OFF : Not executed
ON : Switching complete
SB45A Master switching request acknowledgment
OFF : Not acknowledged
ON : Request acknowledged
SB45B Master switching request complete
OFF : Not complete
ON : Complete
SW443
Refresh instruction at standby master switching
result
0: Normal
Other than 0: Stores an error code
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