每次执行这个操作可以发送至多250个字符。在字符没有全部发送之前或没有超时发生，操作一直进行(例如，如果硬件流控制一-直被使用，远程设备从不激活发送功能)。这个功能使–个或-一个以上的字符从指定端口被读出。
Yaskawa Analog Operator III JVOP-78-1 #15101
Siemens Adaption Casing 6ES5 491-0LB11 #33422
Omron I/O Device 3G2A3-PS221 #8390
Circuit Board SS Proportioning 1094V0 #7156
Namco Controls Proximity Switch EE510-04000 #23164
SCI Circuit Board 080-2415-1 180-2415 #25083
SCI Circuit Board 080-2458 180-2458 Rev B / B #25098
Geiger Handling PC Board SB1 P5.1 3-27 #18274
Sullins EZM18HRMH-S38 PC Board w/ Rack #22208
Square D Circuit Breaker 30 Amp #15127
Square D Circuit Breaker 30 Amp #15126
Daykin Transformer TF750-JFB DKN200A #13395
Square D Pushbutton 9001-KA62KMX, Series A, V2.0 #38211
Allen Bradley Contactor 45 AMP 500-COD930, #5859
ABB BBC Brown Boveri BC9-40-00-A, 16 Amp #26745
Siemens Adaption Casing 6ES5 491-0LB11 #17787
Siemens Adaption Casing 6ES5-491-0LA12 #17790
Mitsubishi Melsec Programmable Controller AX42 #5354
Omron Power Supply 582K-10024 #17646
Omron Timer H3CR-F8, 0-30 seconds #36488
