描述
当用PLC进行网络设计时，其难度比PLC单机控制大得多。首先你应选用自己较熟悉的机型，对其基本指令和功能指令有较深入的了解，并且指令的执行速度和用户程序存储容量也应仔细了解。否则，不能适应你的实时要求，造成系统崩溃。另外，对通信接口、通信协议、数据传送速度等也要考虑。
RELIANCE 0-57408-1C DCS INTERFACE POWER MODULE*NIB*
0-51874 RELIANCE STATIC SEQUENCE CARD
RELIANCE ELECTRIC 07221-120 CRCF CARD NEW !
RELIANCE 38ER4060/896.02.11 GV3000/SE AC DRIVE**NIB**
57C421B RELIANCE AUTOMAX PULSETACH INPUT MODULE
RELIANCE ELECTRIC 0-52837 ACCA PC BOARD
RELIANCE ELECTRIC 0-51831-7 CVTH PC BOARD
RELIANCE ELECTRIC 0-52837 ACCA
RELIANCE ELECTRIC 0-52837 ACCA CARD
RELIANCE ELECTRIC 0-51831-7 CVTH CARD
RELIANCE ELECTRIC 86475-S NSFP 86475S
RELIANCE ELECTRIC 0-51845-1 NSPP 0518451
RELIANCE ELECTRIC 0-54200-2 USPP 0542002
RELIANCE ELECTRIC 0-52712-5 USPP 0527125
