NI PXI-2503多路復用器開關(guān)模塊
品牌：NI
型號：NI PXI-2503多路復用器開關(guān)模塊
產(chǎn)品說明：模塊控制器
NI PXI-2503多路復用器開關(guān)模塊中文資料：
NI PXI-2501多路復用器開關(guān)模塊斷點SNP協(xié)議斷點SNP成為Series 90-30 CPU上所有串行端口的默認協(xié)議，從CPU 350–364的固件版本9.00開始，CPU 311–341的固件版本8.20開始。免中斷功能使該協(xié)議與更廣泛的調(diào)制解調(diào)器兼容。此功能與現(xiàn)有SNP主單元兼容，例如運行PLC編程軟件或PCM模塊的計算機。在一些應(yīng)用中，主要是使用多點SNP通信和非常短的PLC掃描時間的組合，出于性能原因，用戶可能希望禁用無中斷SNP。NI PXI-2501可通過通信請求指令禁用和重新啟用斷點SNP。90系列PLC串行通信用戶手冊GFK-0582記錄了這些通信請求說明。350–374 CPU 350–374組CPU是為了滿足客戶的需求而開發(fā)的，這些客戶需要增加內(nèi)存大小、更快的處理速度以及311–341 CPU上沒有的其他功能。與手持式編程器（HHP）和存儲卡的兼容性?CPU 350-374中的用戶程序不能使用Series 90-30手持式編程儀（IC693PRG300）查看或編輯。您必須使用GE Fanuc編程軟件包之一創(chuàng)建或編輯CPU 350-374用戶程序。NI PXI-2501
英文資料
Breakfree SNP Protocol Breakfree SNP became the default protocol on all serial ports on the Series 90-30 CPUs, starting with Firmware Release 9.00 for CPUs 350–364, and Firmware Release 8.20 for CPUs 311–341. The breakfree feature makes the protocol compatible with a wider variety of modems. This feature is compatible with existing SNP master units such as computers running PLC programming software, or PCM modules. In a few applications, primarily where a combination of multi-drop SNP communications and very short PLC sweep times are used, users may desire, for performance reasons, to disable breakfree SNP. Breakfree SNP can be disabled and re-enabled via Communications Request instructions. The Series 90 PLC Serial Communications User’s Manual, GFK-0582 documents these Communications Request instructions.350–374 CPUs The 350–374 group of CPUs was developed to meet the needs of customers requiring increased memory size, faster processing speed, and additional features not available on the 311–341 CPUs. Compatibility With Hand-Held Programmer (HHP) and Memory Card ? The user program in CPUs 350—374 cannot be viewed or edited with the Series 90-30 HandHeld Programmer (IC693PRG300). You must use one of the GE Fanuc programming software packages to create or edit CPU 350—-374 user programs.
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