外部块和本地数据外部块可以使用全局变量%P，不支持本地变量%L，但可以从调用块中继承本地变量%L。外部块还从调用他的块中继承系统变量FST_EXE和用于更新定时器函数块的”时间标签”。如果参数化程序块中使用了%L变量，并且这个块被MAIN块调用，%L变量值将从%P变量继承(例如%L0005=%P0005)。
Unico PLC Board 317296.003 Circuit Board #13304
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Barber Colman Sequence Module 80CA-10001-002-0-00 30980
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Miller Circuit Card Assembly Board 152371 #31718
Sick Light Curtain Sender FGSS 900-111 #18232
Sick Light Curtain Receiver FGSE 900-111 #18233
Star SPC401C Control Board #8892
AEC Interceptor II 1800-PC Teach Pendant #22706
Westinghouse Starter A200M4CAC #3445
Shibaura H055055-7 PC Board #8915
Shibaura H0550555 PC Board #8916
Reliance 0-51865-1 Current Loop Driver #22463
Allen Bradley Drive, 1336S-BRF05-AA-EN4 #10903
