DOD Technologies DOD64-FTIR, Руководство пользователя

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DC-ITD-FTIR-MAN01 www.dodtec.com
FEB 2020 815-788-5200
FTIR Manual
36 64 Concentration Results During Scan
Real [32] Array with Conc. For Up To
32 gasses
100 4 Scan Date / Time ** See Note Below
104 64 Alarm Level 1 & 2 Indicators
128 Byte Array – Alarm 1&2 for 64
Pts.
168 4 Faults / Alarms FTIR 8 Byte Array Defined Below
172 32 DOD Gas Identification Number Array of 32 UINT (16 bit) Numbers
204 12 Last Spectra File Name Array of 26 Characters
** This is a Microsoft.Net value which represents the number of 100-nanosecond intervals that have elapsed
since 12:00:00 midnight, January 1, 0001, which represents Date, Time, Min. Value. It does not include the
number of ticks that are attributable to leap seconds.
The Fault/Alarms are indicated as follows:
Byte 0 - Critical Fault
Byte 1 - General Fault
Byte 2 - Alarm Level 1
Byte 3 - Alarm Level 2
Byte 4 - Analysis Active
Byte 5
– Power
Byte 6 – Testing Mode
Byte 7 – Heartbeat
F.2 MODBUS TCP/IP
FTIR Faults/Alarms (Discrete Outputs)
Token Description Type
Machine Critical Fault Machine has critical fault Boolean
Machine Maintenance Fault Machine has a maintenance fault Boolean
Machine Gas Alarm 1 Level 1 Gas Alarm at Least 1 Machine Point Boolean
Machine Gas Alarm 2 Level 2 Gas Alarm at Least 1 Machine Point Boolean
Power On Power is on to Analyzer Boolean
Watchdog Toggles On/Off Every X Seconds Boolean
Each Point Alarm Indicators
Token Description Type
Alarm 1 Active Level 1 Gas Alarm Active Boolean
Alarm 2 Active Level 2 Gas Alarm Active Boolean
Last Scan
Token Description Type
Concentrations Array of Concentration Values for Last Scan Real [32]
Sequence# Sequence Number for Last Scan Int
Point Valves Array of Indicators for Active Point(s) during Last Scan Boolean [64]
Scan Date / Time Date / Time of last Scan Ticks Since 1/1/1
Gasses Scanned Array of DOD Gas ID#s In Method Unit [32]
Spectra Filename File Name of Spectra File Created Char [24]
IMPORTANT: Floating Point numbers on the FTIR are stored Little Endian (least significant register first). The
Master MODBUS system should use "Read Holding Registers” to read data from the FTIR.