Telenetics MIU Dial or Leased Line modem with RS-485 manual Appendix C. Connector Diagostics

Page 15

SB-1

Closed(ON) DC Terminated

SB-2

Closed (ON) Line Termination

SB-3 & -4 Open (OFF) 4- wire

SA-1 Open (OFF) RTS follows CTS no delay

SA-2

Open (OFF)

SA-3

Closed (ON) RTS (always ON by MIU internal J7 (1/2)

 

setting) enables TxEN)

SA-4

Open (OFF) TxD will not disable RxD

MIU S3 (external)

SW-1 Closed (ON) MIU is configured for RS485 Module (RS485 RxD (Output) to Modem TxD (input))

SW-2, -3 & -4 Open (OFF)

SA2 & SA3 can be configures for TxD enable TxEn signal if there are several master locations in the network.

SA2 is Closed (ON) TxD (transmit data) enables TX (Driver OutputEnable) + 5ms

SA3 is Open (OFF) TxD will not disable RxD

MIUXXXX/485 Final Connection

Ensure that MIUXXXX/485 J7 (internal jumper) 1/2 is connected

APPENDIX C. CONNECTOR DIAGOSTICS

RS485 CONNECTION FAILURE

CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

Page C-1

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Contents Installation, Operation and Diagnostics Table of Contents Product Description Product OverviewLED Mius LED, Switch & Serial Connector SpecificationsRS-232 Configuration Connector P2 RS485 Configuration Connector P1SB-1 Closed on RS485 Received RX & /RX Regulated Powe r Supply Range 48.0 to 220 Volts AC/DC Power Connector P3 MIUSpeed Distance Environmental SpecificationsApprovals Sheet TWO MIUXXX\485 Power ConnectionMIUXXX/485 DIP Switch Setup Connector P2 RS-232 Configuration Connector DB9 MIU Appendix A.CONNECTOR PIN Definitions Module C-1 MIU S3 external RS485 Connection Failure Appendix C. Connector DiagosticsDiagnostics RS485 Connection Failure
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