Execution Conditions Of Predefined Protocol Function; Operation Image And Data Structure Of The Predefined Protocol Function - Mitsubishi L02CPU User Manual

6.5

Execution Conditions of Predefined Protocol Function

The predefined protocol function can be executed when the protocol setting data is enabled and SM1354 (Predefined
protocol ready) is on. The written protocol setting data will be enabled when
• the CPU module is powered on or is reset, or
• SM1355 (Predefined protocol setting check request) is turned on.
SM1354 is used as an interlock signal to execute the protocol.
(1) Operation of SM1354
SM1354 (Predefined protocol ready) is turned on when the protocol setting data is normal, and remains off when
the protocol setting data is abnormal or not written.
If the protocol setting data is abnormal, the following occurs.
• The error details are stored in SD1359 to SD1362 (Predefined protocol setting data error information).
• The error code is stored in SD1381 (Predefined protocol function error code).
Registration of the protocol setting data can be checked in the following special register areas.
• SD1363 (Number of protocols registered)
• SD1365 to SD1372 (Protocol registration status)
(2) Changing the protocol setting data without powering off or resetting the CPU
module
The protocol setting data can be changed by turning on SM1355 (Predefined protocol setting check request).
After SM1355 turns on, the following occurs.
• SM1354 (Predefined protocol ready) turns off.
• If the protocol setting data is normal, SM1354 turns on, and SM1355 turns off.
• If the protocol setting data is abnormal, SM1354 does not turn on, and SM1355 turns off. The error
information is stored in SD1359 to SD1362 (Predefined protocol setting data error information) and SD1381
(Predefined protocol function error code).
6.6
Operation Image and Data Structure of the Predefined
Protocol Function
For operation image and data structure of the predefined protocol function, refer to the following. (Read the E71
(Ethernet interface module) as the CPU module.)
MELSEC-L Ethernet Interface Module User's Manual (Basic)
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