3Com CS/3000-48 Installation Manual

Contents

A-4 APPENDIX A: PIN ASSIGNMENTSIf UseDTRin is set to OnDTR, then pin 1 is interpreted only as RTS, and pin 3is interpreted as DTR, as shown in Table A-3. The behavior of the singleoutput control signal (pin 28) has not changed. If FlowCtrlFrom is set toCTS_RTS, the signal is used as CTS to flow-control the attached device. Ifnot, the signal behaves as DCD according to the configuration of the -TERMUseDCDout parameter. For further information, refer to the MultiprotocolCommunications Software Reference Guide and your software release notes.Table A-3 Serial Connector Pin Assignments, Software Version 6.1Port Pin Signal Direction Pin Signal Direction0 1 RTS0 In 26 TXD0 In0 2 SG0 — 27 RXD0 Out0 3 DTR — 28 DCD0/CTS0 Out1 4 RTS1 In 29 TXD1 In1 5 SG1 — 30 RXD1 Out1 6 DTR — 31 DCD1/CTS1 Out2 7 RTS2 In 32 TXD2 In2 8 SG2 — 33 RXD2 Out2 9 DTR — 34 DCD2/CTS2 Out3 10 RTS3 In 35 TXD3 In3 11 SG3 — 36 RXD3 Out3 12 DTR — 37 DCD3/CTS3 Out4 13 RTS4 In 38 TXD4 In4 14 SG4 — 39 RXD4 Out4 15 DTR — 40 DCD4/CTS4 Out5 16 RTS5 In 41 TXD5 In5 17 SG5 — 42 RXD5 Out5 18 DTR — 43 DCD5/CTS5 Out6 19 RTS6 In 44 TXD6 In6 20 SG6 — 45 RXD6 Out6 21 DTR — 46 DCD6/CTS6 Out7 22 RTS7 In 47 TXD7 In7 23 SG7 — 48 RXD7 Out7 24 DTR — 49 DCD7/CTS7 OutNone 25 Not used — 50 Not used —CS3000BookFile Page 4 Tuesday, October 15, 1996 5:12 PM