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3. SETUP
3.1. DS1 Setup Switch
The MC-4231-CO’s setup is determined by an internal 8 position dip switch
(DS1) as shown if Figure 1. The function of each position of the dip switch is
described
below:
DS1 FUNCTIONS
SW#
POSITION
FUNCTION
1 OFF
NO
FUNCTION
1 ON
LOAD
DEFAULT
VALUE
2 OFF
19.2K
BAUD
RATE
2 ON
NOT
USED
3 OFF
SENSOR
VOLTAGE
MODE
3 ON
SENSOR
CURRENT
MODE
4 OFF
25
PPM
FULL
SCALE
SPAN
4
ON
50 PPM FULL SCALE SPAN
5 OFF
25
PPM
CALIBRATION
GAS
5 ON
50
PPM
CALIBRATION
GAS
6 OFF
SELECT
SETUP
MODE
6 ON
SETUP
MODE
OFF
7 AND 8 = SETUP MODE TRUTH TABLE BELOW
#7
#8
FUNCTION
ON
ON
SET
WARN
LEVEL
OFF
ON
SET
ALARM
LEVEL
ON
OFF
ZERO OFFSET VALUE (IF PROVIDED)
OFF
OFF
NOT
USED
NOW
Notes: 1) The zero offset value function is provided as an option to the user
by using special software. The user must request this software.
2) The MC-4231-CO may be used in the Voltage Mode Only
Switch DS1 is a multipurpose configuration and setup switch. Each switch of DS1is
described
below:
(DS1-1) When placed to ON and power is then applied to the unit, the default
calibration gas and the warning and alarm trip levels are loaded into memory.
Note: After power has been applied, the DS1-1 switch must be placed to
OFF. The load default values function is for use only as a stand-
alone voltage or current mode sensor. When used as an address-
able sensor, the load default values should not be used. Use the
Master download function instead to change the span calibration
gas
level.
