Mitsubishi MELSEC LJ71C24, User Manual

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App. - 68 App. - 68
APPENDIXES
(2) Program example
The following shows the program that executes the predefined protocol from CH2
of the C24 when M1000 is turned ON.
[I/O signals of the C24]
Device Purpose Device Purpose
X100C
CH2 protocol execution
completion
Y100A
CH2 protocol execution
request
X101D Predefined protocol ready — —
[Link special relay (SB), link special register (SW)]
Device Purpose Device Purpose
SB0049 Data link status of host
station
SW00B0.0
Data link status of each
station (Station number 1)
Checks the data link status of station No.1
Converts the execution command
Number of protocol requests
Number of protocol completions
CH2 protocol execution result obtained
CH2 protocol execution result
Turns on CH2 protocol execution request.
Turns off CH2 protocol execution request.
Specifies protocol No.
Initializes protocol execution No.1 to No.8.
Specifies number of consecutive
Instructs EJ1status reading on CH2.
Execution completion flag
(head module).
into pulses.
executions.
The data in the temperature control module is stored in the following devices in
the master station CPU module.
Device Description
W1000 Communication Unit No.
W1001 Operation Status
W1002 Related Information
W1003 Response Code
W1004 End Code