描述
为了处理急需响应的输入信号，PLC有种种措施。不同的PLC措施也不完全相同，提高响应速度的效果也不同。一般的作法是采用输入中断，然后再输出即时刷新，即中断程序运行后，有关的输出点立即刷新，而不等到整个程序运行结束后再刷新。
Agilent E1676A 2.4 Gb/s SONET/SDH Transport Overhead
LeCroy DDA-125 Disk Drive Analyzer. Single 8 GS/s 16 M
OptiSpec ME3200 Fiber Optic Video Microscope
Hewlett Packard 37717C , Omniber717 WITH OPTS
Hewlett Packard 37717C with 110,A3B Omniber717
HP/Agilent E1406A VXI COMMAND MODULE
Agilent J4223A SpectralBER DWDM Controller with Option
TEKTRONIX VX4610 TEKTRONIX SDH/SONET GENERATOR RECEIVER
WaveSplitter 2×2 C-band Fused Fiber Coupler
Hewlett Packard 70842B Error Detector Module,
JDS Uniphase MAP+2B00 WITH Tunable grafing filter
HP 83480A / E2602A Digital Communications Analyzer
OptiSpec ME6000 Portable Fiber Optic Inspection Scope
