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Download Single-Slot PC Interface Module (PCIM) User`s Manual
Transcript
5 PUTWORD CALL Statement Syntax CALL PUTWORD (STATUS, IMNUM, DEVICENUM, CIROFFSET, WORDDATA) Action Write Output Word Value Description A Put Word call allows you to write a single output word from the Host memory WORDDATA parameter to the specified PCIMs Output Table. The WORDDATA parameter is an integer which PUTWORD uses for the word to be transmitted. IMNUM is the PCIM number configured during initialization. The DEVICENUM parameter specifies the serial bus address of the device where the output word is to be sent. The CIROFFSET parameter indicates which word of the specified device is to be written. This value ranges from 1 through 64 (in word quantities). When PUTWORD is called, it begins by “Locking–out” the PCIM from updating the Shared RAM (ensures data coherency across bus scans). PUTWORD then transfers the word data to the PCIM. Once the transfer is complete, the PCIM is ”unlocked”. Parameters are summarized as follows: Parameter Function IMNUM 1–64 Relative number of PCIM DEVICENUM 0–31 Specifies device to which output word will be written CIROFFSET 1–64 Output word offset in specified device, in words WORDDATA 1 entry Word requested STATUS 5-42 Values Success/Fail Single-Slot PCIM User’s Manual – January 1994 GFK-0881
