Emerson MRLDS Specifications download pdf (Page 16)

10 • MRLDS I&O Manual 026-1307 Rev 3 06-APR-2010

4.3.9 Setting the Baud Rate Dip

Switches

Dip switches 6 and 7 control the baud rate at which the

Gateway communicates with the site controller on the

RS485 Network. These switches must be set to the same

baud rate setting as the controller you are using (Einstein,

RMCC, or E2), and defaults to 9600 baud. Dip switch 8

controls the baud rate at which the Gateway communicates

with the MRLDS. For 9600 baud, set dip switch 8 to the

OFF position. For 19200 baud, set dip switch 8 to the ON

position (always use 19200 baud for MRLDS).

4.3.10 Hand-Held Terminal Set-

tings

The hand-held terminal can be used to view status

information, enable unit addresses, and is connected

directly to the Gateway board via the hand-held terminal

jack.

4.3.10.1 MRLDS Setup

From the HHT Home screen (F1), press the down

arrow key to navigate to the Baud Rate/Address screen

(Figure 4-15).

The Baud Rate/Address screen displays the Gateway

I/O Network address (I/O ADDR), the I/O Network baud

rate between the Gateway and the E2 (I/O BAUD), and the

Modbus baud rate between the Gateway and the MRLDS

devices (MOD BAUD).

4.3.10.2 Select Screen

Press the down arrow again to navigate to the Select

screen (or press F2). From the Select screen you can see

status, setup, and firmware version information.

To select, press the right arrow until it appears next to

SELECT and press 1, 2, or 3 in the list. Press the down

arrow twice to move to the desired screen.

4.3.10.3 Status Screen

1 - The Status screen displays general status informa-

tion about the MRLDS such as device numbering, count

information (gas concentration in PPM), the type of refrig-

erant gas being monitored (MRLDS jumpers set by the

user), and whether an alarm has been issued. An alarm

indicates an MRLDS failure and that the MRLDS should

be replaced. Call the Retail Solutions Service Department

(770-425-2724) to verify if the MRLDS unit should be

replaced.

Possible states (ST) are:

• WARMUP - MRLDS is warming up.

• NORMAL - MRLDS has completed warm-up and

is operating normally.

• OFFLINE - MRLDS has lost communication.

• UNUSED - This address is not being used.

• FAIL - MRLDS has reported a fail state. Check the

ALM field for specification.

Figure 4-13

- Dip Switch Settings for Gateway Baud Rate

Figure 4-14 - MRLDS HHT Home Screen

GATEWAY

DIP SWITCH

I/O NETWORK OR

COM A AND D

BAUD RATE

I/O NET BAUD RATE SETTINGS

2345678

9600 19200

OFF = 9600 BAUD ON

MODBUS

ON = 19200 BAUD ON

MODBUS

(GW to E2)

(GW to MRLDS)

ALWAYS USE

19200 BAUD

WITH MRLDS

MRLDS GATEWAY

810-3040

VER:1.10B03

( PRESS )

FAIL I/O NET

Figure 4-15 - Baud Rate/Address Screen

Figure 4-16 - Select Screen

I/O ADDR: 1

FAIL I/O NET

MOD BAUD: 19200

I/O BAUD: 9600

SELECT: 1

FAIL I/O NET

2 - SETUP/ONLINE

3 - FW REVISION

1 - STATUS

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