SIMATIC NET CP 242-8 C79000-G8976-C109 A&D PT2, Karlsruhe

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Specifications	SIMATIC NET CP 242-8 C79000-G8976-C109 A&D PT2, Karlsruhe
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CP 242-8 as AS-Interface Master 3-9 CP 242-8AS-Interface Master / PROFIBUS DP Slave – Release 01 C79000–G8976R

Specifications	SIMATIC NET CP 242-8 C79000-G8976-C109 A&D PT2, Karlsruhe
Outline	Title Preface Contents Technical Description and Installation Instructions 1.1 General 1.2 Application of the Module 1.3 Technical Specifications of the Module 1.4 Installing the Module 1.5 Front Panel – Access to all Functions 1.6 Connection Elements 1.7 Display and Control Elements 1.7.1 Status Display 1.7.2 Slave Display for AS-i Slaves 1.7.3 Displaying and Setting the PROFIBUS Address 1.8 Configuring the AS-Interface with the SET Button Glossary Index Back Atrás
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Content	CP 242-8 as AS-Interface Master 3-9 CP 242-8AS-Interface Master / PROFIBUS DP Slave – Release 01 C79000–G8976–C109/01 3.5Command interface of the CP 242-8 Meaning You require the AS-i command interface when you want to use functions over and above pure I/O data exchange with the AS-i slaves (for example assigning parameters to slaves from within the S7-200 program, modifying slave addresses etc.). Command Buffer and Response Buffer Command calls are made to the CP 242-8 from within the user program. You specify the command call in a command buffer and start the job. The command buffer is in the analog output area of the CP 242-8 (for example starting at AQW0 if the CP 242-8 is plugged in directly beside the S7-200 CPU). Depending on the command to be executed (see Section 3.6), the response data occupy banks 2 to 5 in the analog output area of the CP 242-8. On completion of the job, the job status and any response data are made available in a response buffer. The response buffer is in the analog input area of the CP 242-8 (for example starting at AIW0, if the CP 242-8 is plugged in directly beside an S7-200 CPU). Depending on the command that was executed, the response data occupy banks 2 to 5 in the analog input area of the CP 242-8. Requirements Remember that the following requirements must be met before a command call is sent from within the user program: The PLC_RUN bit must be set to “1” in the control byte of the CP 242-8. By setting the CP_READY bit in the status byte to “1”, the CP 242-8 signals that it is ready after turning on the power. Note If CP_READY is set to 0, no AS-i program execution is possible.
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Following Datasheets	CP243-1_en (82 pages) da21-1-2004_en (14 pages) da21-1_en (168 pages) DA_51_2_v2_cz (115 pages) doc_s7_200_hmi_max_connections_cz (1 pages) doc_s7_200_max_io_table_2002_cz (5 pages) doc_s7_200_quick_reference_info_en (6 pages) dodatky_simatic_MM440_cz (10 pages) faq_s7_200_hi_speed_measuring_en (5 pages) fm_micromaster_03_2005_cz (4 pages)
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