ES749 Flow Computer
121
Register Usage (each register is 2 bytes)
ES749 Data Register Data Type
STD Total Units Reg 40087 Integer
Vol. Total Units Reg 40088 Integer
Denition of Barrel Reg 40089 Integer
Specic Enthalpy Units Reg 40090 Integer
Length Units Reg 40091 Integer
Calibration trail Reg 40092 Integer
Conguration trail Reg 40093 Integer
Tag Number Reg 40094 Integer
Peak Year Reg 40095 Integer
Peak Month Reg 40096 Integer
Peak Day Reg 40097 Integer
Peak Hours Reg 40098 Integer
Peak Min Reg 40099 Integer
Unused Reg 40100 Integer
Unused Reg 40101 & 40102 Float
Unused Reg 40103 & 40104 Float
Unused Reg 40105 & 40106 Float
Unused Reg 40107 & 40108 Float
Unused Reg 40109 & 40110 Float
Unused Reg 40111 & 40112 Float
Unused Reg 40113 & 40114 Float
Unused Reg 40115 & 40116 Float
Unused Reg 40117 & 40118 Float
Unused Reg 40119 & 40120 Float
Unused Reg 40121 & 40122 Float
Unused Reg 40123 & 40124 Float
COIL USAGE (each coil is 1 bit)
ES749 Data Coil Data Type
System Alarm Power Failure Coil 00001 bit
System Alarm Watchdog Coil 00002 bit
System Alarm Communication Error Coil 00003 bit
System Alarm Calibration Error Coil 00004 bit
System Alarm Print Buffer Full Coil 00005 bit
System Alarm Totalizer Error Coil 00006 bit
Sensor/Process Alarm Wet Steam Alarm Coil 00007 bit
Sensor/Process Alarm Off Fluid Table Coil 00008 bit
Sensor/Process Alarm Flow In Over Range Coil 00009 bit
Sensor/Process Alarm Input 1 Over Range Coil 00010 bit
Sensor/Process Alarm Input 2 Over Range Coil 00011 bit
Sensor/Process Alarm Flow Loop Broken Coil 00012 bit
Sensor/Process Alarm Loop 1 Broken Coil 00013 bit
Sensor/Process Alarm Loop 2 Broken Coil 00014 bit
Sensor/Process Alarm RTD 1 Open Coil 00015 bit
Sensor/Process Alarm RTD 1 Short Coil 00016 bit
Sensor/Process Alarm RTD 2 Open Coil 00017 bit
Sensor/Process Alarm RTD 2 Short Coil 00018 bit
Sensor/Process Alarm Pulse Out Overrun Coil 00019 bit
Sensor/Process Alarm Iout 1 Out Of Range Coil 00020 bit
Sensor/Process Alarm Iout 2 Out Of Range Coil 00021 bit
Sensor/Process Alarm Relay 1 Hi Alarm Coil 00022 bit
Appendix C- RS-485 Modbus Protocol (continued)
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