Title: +038=360.000-OU045T_03-PCD2.m4160 PLS SBC - Hardware Manual.pdf
RS 485 Bus-cableRX - TX /RX - /TXD /DWD WD29 28 27 26 25 24 23 22 21 20S1 OC5Choice of termination resistorsFirst stationMiddle stationsEnd station+5 V+5 VPull up 330 Ohm28n/nn/n/RX - /TX/nTermination Resistor 150 OhmBus RS 485RX - TX29nPull down 330 OhmSegment length max. 1200 mmax. 32 stationsAt the first and last stations, switch S1 must be set to "C" (closed).At all other stations, switch S1 must be left in position set to "O" (factory setting).Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 09│2012-01-255-5Saia-Burgess Controls Ltd.Communication interfacesOnboard interfaces5.3.4 USB port as PGU interfaceThe USB port can only be used as a PGU interface. This leaves the PGU connector free for other communication links (RS232).In order to use the USB interface, PG5 version 1.4.200 or later must be installed.