Specifications

Ammonia Gas Monitor – Multi Zone
Instruction 3015-5113 57
Fault Log Register Register 0x1900, 0x1901h 6400, 6401dec R 302 bytes
These registers contain the 20 most recent fault events, the time they occurred, and a pointer to the most
recent event. The data is split into 2 registers. The first register contains 200 bytes and the second register
contains 102 bytes. The results of these two register reads should be recombined into the Fault Log Data
Structure after both have been received
Variable Type Length Description
Fault UI 40 bytes
20 most recent fault events. Each event is decoded as
indicated in Fault Flag Structure given after the Status
Register Description
Time TIM 260 bytes
Time of each fault occurrence. TIM value as defined in
NOTE 2 of Zone Data
Ptr UC 1 byte Pointer to most recent event
Unused UC 1 byte
Flow Log Register Register 0x001F 31dec R 142 bytes
Variable Type Length Description
Flow Event UI 40 bytes
20 most recent flow fault events. Each bit of the unsigned
int represents a zone and a 1 indicates no flow. Zero
indicates flow.
Purge Flow Event UC 20 bytes
20 most recent flow fault events where a 1 indicates no
flow. Zero indicates flow.
Time UC 80 bytes
Time/date stamps for 20 most recent logged flow events.
This variable is an unsigned long integer formatted as
seconds since Jan 1 of 1980
Ptr UC 1 byte Pointer to most recent event
Unused UC 1 byte Unused
Alarm Log Register Register 0x1A00h, 0x1A01h, 0x1A02h (6656, 6657, 6657dec)
R 582 bytes
These registers contain the 20 most recent alarm events, the time they occurred, and a pointer to the most
recent event. The data is split into 3 registers and should be recombined into an appropriate structure after all
three registers have been received. Register 0x1A00h contain 200 bytes, Register 0x1A01h contains 200
bytes, and register 0x1A02h contains 181 bytes.
Variable Type Length Description
Event UC 320 bytes
20 most recent alarm events. Each event contains 1 byte
for each zone. Each zone Byte is defined as 0=No Alarm,
1=Leak Alarm, 2=Spill Alarm, 3=Evac Alarm.
Time TIM 260 bytes
Time of each alarm event. TIM value as defined in NOTE 2
of Zone Data
Ptr UC 1 byte Pointer to most recent event
Unused UC 1 byte
Service Mode Register
Register 0x001B/hex 27dec W 10 bytes
Variable Type Length Description
Rel_Svc_Mode * * See description of STATUS REGISTER