SAIA PCD4 PLC 使用手册pdf,SAIA PCD4 PLC 使用手册PCDA Processor module User memory PCDA M170 Page 6 1 MByte RAM and plug-on flash card for saving up to 428KBytes Lscr memory user memory PrD Pages 4/5 RAM or eprom 二 Page 5 Field bus connections sockets b1 and/