Chapter 2 Systems specification
2-33
2-6
Scan and I/O transfer
2-6-1
CPU execution process
When the sequence when the power is turned on is finished, the SJ Ether series CPU repeatedly executes the I/O transfer
program as a normal scan.
電源投入
ハードウエアの初期化
I/O
モジュールの配列チェック
停電保持設定外メモリの初期化
入力転送
周辺機器のサービス
CPU
バスのサービス
クロック、特殊リレーの更新
プログラム実行
出力転送
自己診断の実行
正常?
自己診断エラー結果の格納
フラグ、レジスタ、
LED
表示
致命的異常?
CPU
動作モードを強制的に
STOP
に変更
YES
YES
RUN
NO
NO
STOP
電源投入時のシーケンス
通常スキャン
エラー発生時の処理
CPU
動作モード
The power is on
Initialization of hardware
Array check of I/O module
Initialization of memory outside of
blackout hold setting
Input transmission
Service of peripheral device
Service of CPU Bus
Renewal of clock and special relay
CPU operation mode
Program execution
Output transmission
Execution of self-diagnosis
Normal?
Crucial abnormality?
Storage of the error result of
self-diagnosis
Flag, register and LED display
Forcibly turn CPU operation
mode into STOP
Sequence when the power becomes on
Normal scan
Handling when errors occur
Summary of Contents for Kostac SJ-Ether Series
Page 1: ...English version of the KOSTAC SJ Ether series user s manual SJ ETHER USER M...
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Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
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Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
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Page 310: ...Chapter 7 Maintenance...
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