Real-Time Automation Controller (RTAC) The SEL-3505 is a lower-voltage version of the RTAC with options ranging from 12 Vdc to 24/48 Vdc. This is a compact RTAC that supports DIN- and surface-mounting options and delivers all the standard features of an RTAC, making it an excellent ...
SEL-3505/SEL-3505-3 Real-Time Automation Controller Major Features and Benefits The SEL-3505 and SEL-3505-3 Real-Time Automation Controllers (RTAC) combine the power of IEC 61131 PLC logic with the best features of a communications processor in a small, low-...
用子查询设计SQL语句:查询有订购数量大于2的所有客户的编号、姓名。正确的SELECT语句是( )。 A. SELECT 客户编号,客户姓名 FROM KHB WHERE 客户编号 IN (SELECT 客户编号 FROM SPDGB WHERE 数量>2) B. SELECT 客户编号,客户姓名 FROM KHB WHERE EXISTS (SELECT 客户编号 FROM SPDGB WHERE 数量>2) ...
Compact, economical, and lower voltage version of the SEL-3530 RTAC. Includes all of the standard features of the RTAC making it a very powerful option for protocol conversion and a secure communications gateway.
Compact, economical, and lower voltage version of the SEL-3530 RTAC. Includes all of the standard features of the RTAC making it a very powerful option for protocol conversion and a secure communications gateway.