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Telenetics MIU Dial or Leased Line modem with RS-485 User Manual

Page 14

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CIU Installation, Operation & Diagnostics

Edition: June 17, 2003

Page C-1

&Z3=XX Password to exit security mode

&C1 Carrier Detect is always True (MIU LED will be ON all the time

when Carrier Detect is ON.

&D0 DTR is ignored

&K0 No flow control


4:

AT Command (MIU9.6L/485) Lease Line

ATE0Q1&C1&D0&K0&Q6\M0\H1W0

E0

Echo Command disables (no "AT" response to terminal)

Q1

Result Codes disable (no result codes return to terminal ring,

Connect (XXX)

&Q6 Normal mode (speed buffering)

\M0

Answer mode (for Remote (Slave)unit) local (Master) set for

originate \M1

\H1

Lease Line mode

\S1

Security mode (Not available for MIU9.6L)

&C1 Carrier Detect is always true (MIU LED will be ON all the time when

Carrier Detect is ON.

&D0 DTR is ignored

&K0 No flow control

Note &Q5 error detection and data compression can be used

If the host software will support EC



Switch Setting (MIUXXX/485) (Typical)

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)

2- Wire Configuration on PE485 module

SB-1 Closed (ON) DC Termination Open (OFF) AC Termination
SB-2 Closed (ON) Line Termination
SB-3 & -4 Closed (ON) 2- Wire

SA- 1 Open (OFF)
SA- 2 Closed (ON) TxD (transmit data) enables TX (Driver Output Enable) + 5ms
SA- 3 Open (OFF)
SA- 4 Closed (ON) Received data is disable with TX

enable (TxD)



4- Wire Configuration for PE485 module