H56874 4/03 www.tycothermal.com +1 (650) 474-7400 8
SET HOST PORT PARAMETERS
For TTDM’s that are connected to a host computer, DCS or building management system,
the host port parameters must be set.
► With the TTDM on Current Event/Status display, press MENU
► Use the DOWN arrow key to select TTDM Network, then press ENTER
► Use the DOWN arrow key to select the desired parameter, then press ENTER. If asked for a
password, input 00010 and press ENTER. The parameters that can be changed are:
▪ Baud: select host port baud rate
▪ Modem: Dene modem dialing strings
▪ 485 Address: Set the TTDM’s MODBUS address
▪ TTDM: Select the host port mode (Master or Slave). The password for this parameter is
04000. Note: For communication with automation systems, PC’s and other host systems,
set the port to Master. Slave mode is used only for communication to a TTDM operating as
a Remote Display.
Conguration Specic Setup
STAND ALONE SINGLE CHANNEL SYSTEM
► Perform Basic TTDM-128 Setup (page 7)
► Assign the leak detection channel tag if required (page 7)
► Perform the Host Port Setup if required (page 8)
SINGLE CHANNEL WITH REMOTE REPEATER
Before powering up the system:
► remove the internal Sensor Interface Board
from the Remote Repeater TTDM.
► Connect the RS-485 host port (J13) of the
Primary TTDM to the TraceTek Network port
(J10) of the Remote Display TTDM.
You can now power up the system and
proceed with setup.
Primary (Slave)
TTDM
Remote Display
(Master) TTDM
RS-485 twisted
pair cabling
Remote Display (Master) TTDM
J10
XMTRSEXTRS-485
485–
4
485+
3
Primary (Slave) TTDM
J13
COMMPORTEXTRS-232/485
TX/B
485–
6
RX/A
485+
5
Remote repeater RS-485 connection diagram
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