公开(公告)号：EP0365673A4

公开(公告)日：1992-11-04

申请号：EP89906514

申请日：1989-04-11

申请人： SQUARE D COMPANY

发明人： WATT, KIM, J. ,  GATES, DIRK, I. ,  JANKE, DONALD, R.

IPC分类号： G06F15/167 ,  G05B19/05 ,  G06F15/46 ,  G06F15/16

CPC分类号： G05B19/052 ,  G05B2219/1132 ,  G05B2219/1159 ,  G05B2219/1208

摘要： A communication network for programmable logic controllers (PLCs) wherein selected memory means (16) of each PLC have at least two ports directly accessible by other PLCs and certain registers of the PLCs are identical to enable efficient, high-speed transfer (30) of block of data between the PLCs.

公开(公告)号：EP0400091A4

公开(公告)日：1993-03-03

申请号：EP89904419

申请日：1989-04-11

申请人： SQUARE D COMPANY

发明人： GATES, DIRK, I. ,  WATT, KIM, J. ,  RANTALA, GLEN, W. ,  JANKE, DONALD, R.

IPC分类号： G06F15/16 ,  G05B19/05 ,  G06F15/177 ,  G05B11/01 ,  G05B19/02

CPC分类号： G05B19/052

公开(公告)号：EP0493504A4

公开(公告)日：1992-10-28

申请号：EP90914854

申请日：1990-09-11

申请人： SQUARE D COMPANY

发明人： JANKE, DONALD, R. ,  SABROFF, RICHARD, R.

IPC分类号： G05B19/05 ,  G06F13/40 ,  G06F13/00

CPC分类号： G06F13/4072

摘要： A combination input/output (I/O) module (11) for a microprocessor based device is disclosed. The combination I/O module (11) includes a combination point (15) which is operable as either an input point adapted for coupling to an input device (17), an output point adapted for coupling to an output device (19) or both. The combination I/O module (11) provides continuous sensing of the presence or absence of the output device (19). The combination I/O module (11) includes a triac (21) and provides for continuous sensing of the conductive state of the triac (21).