Hardware manual

Introduction PCI VELOCITY / OPTO ISO RS422/485
Intro 4
Uninstalling Serial Solutions PCI. ...................................... 27
CONFIGURING PORTS IN WINDOWS 3.X.................................... 28
Determining PCI RS422/485 Resources. ............................ 28
Windows 3.x Software Installation. .................................... 29
Serial Port Installation. ....................................................... 30
Configuring The COM Ports. ............................................. 32
Deleting Ports in Windows................................................. 33
Restarting Windows. .......................................................... 33
CONFIGURING PORTS IN DOS.................................................. 34
Determining PCI RS422/485 Resources. ............................ 34
NEWCOM.SYS Parameters. .............................................. 35
Configuring And Installing NEWCOM.SYS ...................... 37
Modifying Command Line Parameters. .............................. 38
CHAPTER 4 ................................................................................39
THE RS422 STANDARD........................................................... 39
THE RS485 STANDARD........................................................... 39
Terminating Impedance’s. .................................................. 40
Fail Safe Open Circuit Detection. ....................................... 41
Fail Safe Short Circuit Protection. ......................................41
RS422 OPERATION. ................................................................ 41
RS422 Serial Port Cables.................................................... 42
RS485 OPERATION. ................................................................ 43
RS485 Cable.......................................................................44
RS485 One Talker - Many Listeners, Half Duplex.............. 44
RS485 Many Talkers- Many Listeners, Half Duplex........... 45
RS485 Many Talkers- Many Listeners, Full Duplex. .......... 46
OPTIONAL GROUNDING ARRANGEMENTS................................. 47
INDEX ........................................................................................50