坚信诚信经营,质量为首,诚信至上合作双赢,互赢自动化宣! 1756-M03SE-CC 1756-M03SEK 1756-M08SE 1756-M08SE-CC 1756-M08SEG 1756-M08SEGK 1756-M08SEK 1756-M16SE 1756-M16SE-CC 1756-M16SEK 1756-N2 1756-N2XT 1756-OA16 1756-OA16I 1756-OA16IK 1756-OA16K 1756-OA8 1756-OA8-CC 1756-OA8D 1756-OA8D-CC 1756-OA8E 1756-OA8E-CC 1756-OB16D 1756-OB16DK OKUMA MEMORY CARD E4809-436-031-A _ E4809436031A PCB OKUMA MEMORY CARD E4809-436-039_ E4809436039 PCB OKUMA ABSOLUTE ENCODER TYPE F2 FII F11 E4809-436-041 OKUMA OPUS 5000 RS232 C _E4809-436-033-A _ E4809436033A Okuma 5000 CMOS Main Card 13 RS232C E4809-436-033A OKUMA ABSOLUTE ENCODER TYPE F2 FII F11 E4809-436-041 Okuma OPUS 5000 Memory Card 2 E4809-436-032A Board OKUMA E4809-436-CD-N-1 AND E4809-436-024 BOARD SEPARATE OKUMA OPUS 5000 MAIN BRD E4809-436-011E E4809-045-077-A E0227-702-005 BUBBLE MEM PUNCHER RS232C BOARDS 现在PLC的通讯功能越来越强大,很多PLC都支持多种通讯协议(有些需要配备相应的通讯模块),选择时要根据实际需要选择合适的通讯方式。 PLC系统的通信网络主要形式有下列几种形式: (1)PC为主站,多台同型号PLC为从站,组成简易PLC网络; (2)1台PLC为主站,其他同型号PLC为从站,构成主从式PLC网络; (3)PLC网络通过特定网络接口连接到大型DCS中作为DCS的子网; (4)**PLC网络(各厂商的**PLC通信网络)。