Owner's Manual

Multi-Zone Gas Monitors
P/N: 3015-5074 Rev 11 59
B.3.9. Fault Code Table
BIT Fau lt Type Code Description
15
CLIPPING FAULT
0x8000
0x8000 Sensor output voltage too high
14
ZERO RANGE FAULT
0x4000
Sensor output voltage outside limits during purge
13
OVER R ANGE F AULT
0x2000
Gas concentration above measurable range
12
PURGE FLOW FAULT
0x1000
No flow detected during purge cycle
11
ZONE FLOW FAULT
0x0800
No flow detected during sample cycle
10
A2D F AULT
0x0400
Analog to digital converter not working
9
GAIN SET FAULT
0x0200
Digipot gain setting out of normal range
8
ZERO FILTER FAULT
0x0100
Charcoal filter (if used) needs replacement
7
CONFIG FAULT
0x0080
No zones are enabled
6
UNUSED FAULT 2
0x0040
5
UNUSED FAULT 1
0x0020
4 LOOP FAULT 0x0010 Current loop is open
3
RS485 FAULT
0x0008
Communications error
2
MANIFOLD P FAULT
0x0004
Pressure sensor readings are out of range
1
BENCH T FAULT
0x0002
Sensor temperature is out of range
0
BOX T FAULT
0x0001
Chassis temperature is out of range
B.3.10. Zone Data Register 0x12xx (R/W, 78 Bytes)
Each zone for an MZ has a separate zone data structure that is 78 bytes long. The zone number is the low
order byte in the register address (i.e., Zone 1 data register = 0x1201h).
Variable Type Length Description
Location
C
13 bytes
13 byte array, Alpha Numeric Description or Name of Zone
Flow OK UC 1 byte
Status of Flow check. Value of 1 indicates flow check is good. DO NOT
MODIFY.
Refrigerant
Type
UC 1 byte See note 1 Below (DEFAULT = R134a)
Distance
UI
2 bytes
Zone Tubing Length (in feet) (DEFAULT = 100 feet [approx. 30.5 meters])
Zone Temp
I
2 bytes
Average temperature at zone (degrees C) (DEFAULT = 25°C)
Concentration
Float
4 bytes
Last Measured concentrations (uM/L) DO NOT MODIFY
Concentration2
Float
4 bytes
Last Measured concentration (PPM) DO NOT MODIFY
Alarm Ack UC 1 bytes
Set value to 1 to acknowledge Alarm.
NOTE: MZ will reset this byte to 0 when the Alarm byte
(below) is = 0 and zone in alarm is sampled. If the alarm
condition/byte increases (leak>>s pill or spill>>evac) the MZ
will also reset this byte to 0.
Alarm
UC
1 bytes
Alarm Status; 0 = no alarm, 1 = leak; 2 = spill; 3 = evac.
Leak Level
UI
2 bytes
Level to trigger a leak alarm (in PPM) (DEFAULT = 100)
Spill Level
UI
2 bytes
Level to trigger a spill alarm (in PPM) (DEFAULT = 300)
Evac Level
UI
2 bytes
Level to trigger a evacuate alarm (in PPM) (DEFAULT = 500)
Peak PPM
UI
2 bytes
Highest Recorded PPM in zone
Peak Time
TIM
13 bytes
Date an time of highest peak (see note 2 for format)
Alarm Time
TIM
13 bytes
Date and time of last alarm (see note 2 for format)
Alarm Ack/Time
13 bytes
Log Interval
UI
2 bytes
Number of minutes between Log entries (DEFAULT = 1440)