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10 • MRLDS I&O Manual 026-1307 Rev 1 11-30-07
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 CPC 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
1
9600 19200
OFF = 9600 BAUD ON
MODBUS
ON = 19200 BAUD ON
MODBUS
ON
(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