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Sentry Controller
MODBUS Memory Map
(Enhanced)
December 15, 1998
Updated March 4, 2005
Sierra Monitor Corp. 1991 Tarob Ct. Milpitas, CA 95035 USA 408-262-6611, Toll Free 800-727-4377, FAX: 408-262-9042
Visit our Web Site: www.sierramonitor.com E-Mail: sierra@sierramonitor.com
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Sentry MODBUS I/O Memory Map Sentry Controller MODBUS Memory Map Detail 1 All Registers are MODBUS 16 bit registers 2 There are five different ways of using MODBUS registers (see italic reference number in left column for each address) 2.1 As an Analog Value: In most cases these values are scaled by multiplying by 10. 2.2 As eight packed digital states, packed into one register. In this case the remaining 8 bits are unused. 2.3 As a digital state where the register value can only be
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Sentry MODBUS I/O Memory Map Read Only Parameters Modbus Address Parameter Units FIX EGU Discrete 40001:0 High alarm bits - sensor 1 40001:1 High alarm bits - sensor 2 40001:2 High alarm bits - sensor 3 40001:3 High alarm bits - sensor 4 40001:4 High alarm bits - sensor 5 40001:5 High alarm bits - sensor 6 40001:6 High alarm bits - sensor 7 40001:7 High alarm bits - sensor 8 40002:0 Low alarm bits - sensor 1 40002:1 Low alarm bits - sensor 2 40002:2 Low a
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40007:0 High alarm relay latched – sensor 1 40007:1 High alarm relay latched – sensor 2 40007:2 High alarm relay latched – sensor 3 40007:3 High alarm relay latched – sensor 4 40007:4 High alarm relay latched – sensor 5 40007:5 High alarm relay latched – sensor 6 40007:6 High alarm relay latched – sensor 7 40007:7 High alarm relay latched – sensor 8 40008:0 Low alarm relay latched – sensor 1 40008:1 Low
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40020:0 Sensor 1: Status 2 Sensor Disconnected (Trouble Bits) 40020:2 Sensor 1: Voltage Regulator Failure 40020:3 Sensor 1: Sensor Bad 40020:4 Sensor 1: Duplicate Sensor 40020:5 Sensor 1: Timer Failure 40020:6 Sensor 1: Sensor Bridge Failure (CH ) 4 40020:7 Sensor 1: Type Error 40021:0 Sensor 1: Status 1 Enabled 40021:1 Sensor 1: Auto Calibration Enabled 40021:2 Sensor 1: Low Alarm Latch 40021:3 Sen
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40040:0 Sensor 3: Sensor Disconnected (Trouble Bits) 40040:2 Sensor 3: Voltage Regulator Failure 40040:3 Sensor 3: Sensor Bad 40040:4 Sensor 3: Duplicate Sensor 40040:5 Sensor 3: Timer Failure 40040:6 Sensor 3: Sensor Bridge Failure (Combustibles) 40040:7 Sensor 3: Type Error 40041:0 Sensor 3: Enabled 40041:1 Sensor 3: Auto Calibration Enabled 40041:2 Sensor 3: Low Alarm Latch 40041:3 Sensor 3: Calib
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40060:0 Sensor 5: Sensor Disconnected (Trouble Bits) 40060:2 Sensor 5: Voltage Regulator Failure 40060:3 Sensor 5: Sensor Bad 40060:4 Sensor 5: Duplicate Sensor 40060:5 Sensor 5: Timer Failure 40060:6 Sensor 5: Sensor Bridge Failure (Combustibles) 40060:7 Sensor 5: Type Error 40061:0 Sensor 5: Enabled 40061:1 Sensor 5: Auto Calibration Enabled 40061:2 Sensor 5: Low Alarm Latch 40061:3 Sensor 5: Calib
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40080:0 Sensor 7: Sensor Disconnected (Trouble Bits) 40080:2 Sensor 7: Voltage Regulator Failure 40080:3 Sensor 7: Sensor Bad 40080:4 Sensor 7: Duplicate Sensor 40080:5 Sensor 7: Timer Failure 40080:6 Sensor 7: Sensor Bridge Failure (Combustibles) 40080:7 Sensor 7: Type Error 40081:0 Sensor 7: Enabled 40081:1 Sensor 7: Auto Calibration Enabled 40081:2 Sensor 7: Low Alarm Latch 40081:3 Sensor 7: Calib
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Sentry MODBUS I/O Memory Map Analog Process Variables Modbus Address Parameter Units FIX EGU 40111 Sensor 1 concentration % / PPM 0 - 6553.5 40112 Sensor 2 concentration % / PPM 0 - 6553.5 40113 Sensor 3 concentration % / PPM 0 - 6553.5 40114 Sensor 4 concentration % / PPM 0 - 6553.5 40115 Sensor 5 concentration % / PPM 0 - 6553.5 40116 Sensor 6 concentration % / PPM 0 - 6553.5 40117 Sensor 7 concentration % / PPM 0 - 6553.5 40118 Sensor 8 concentration % / PPM 0 - 6553.5
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40156 Sensor 6 Power (H S and COMB only ) 2 40157 Sensor 7 Power (H S and COMB only ) 2 40158 Sensor 8 Power (H S and COMB only ) 2 40159 Sensor 1 Type (1,2,3 or 4) 40160 Sensor 2 Type (1,2,3 or 4) 40161 Sensor 3 Type (1,2,3 or 4) 40162 Sensor 4 Type (1,2,3 or 4) 40163 Sensor 5 Type (1,2,3 or 4) 40164 Sensor 6 Type (1,2,3 or 4) 40165 Sensor 7 Type (1,2,3 or 4) 40166 Sensor 8 Type (1,2,3 or 4)
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40224 Sensor 1 Input Value - Multiplex 0 0 - 6553.5 40225 Sensor 1 Input Value - Multiplex 1 0 - 6553.5 40226 Sensor 1 Input Value - Multiplex 2 0 - 6553.5 40227 Sensor 1 Input Value - Multiplex 3 0 - 6553.5 40228 Sensor 1 Input Value - Multiplex 4 0 - 6553.5 40229 Sensor 1 Input Value - Multiplex 5 0 - 6553.5 40230 Sensor 1 Input Value - Multiplex 6 0 - 6553.5 40231 Sensor 1 Input Value - Multiplex 7 0 -
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40266 Sensor 3 High Alarm Time Month 40267 Sensor 3 High Alarm Time Day 40268 Sensor 3 High Alarm Time Hr 40269 Sensor 3 High Alarm Time Min 40270 Sensor 3 Low Alarm Time Month 40271 Sensor 3 Low Alarm Time Day 40272 Sensor 3 Low Alarm Time Hr 40273 Sensor 3 Low Alarm Time Min 40274 Sensor 3 Calibration Time Month 40275 Sensor 3 Calibration Time Day 40276 Sensor 3 Calibration Time Hr 4027
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40311 Sensor 4 High Conc. Time Month 40312 Sensor 4 High Conc. Time Day 40313 Sensor 4 High Conc. Time Hr 40314 Sensor 4 High Conc. Time Min 40315 Sensor 4 Low Conc. Time Month 40316 Sensor 4 Low Conc. Time Day 40317 Sensor 4 Low Conc. Time Hr 40318 Sensor 4 Low Conc. Time Min 40319 Sensor 4 Trouble Time Month 40320 Sensor 4 Trouble Time Day 40321 Sensor 4 Trouble Time Hr 4032
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40356 Sensor 5 Input Value - Multiplex 0 0 - 6553.5 40357 Sensor 5 Input Value - Multiplex 1 0 - 6553.5 40358 Sensor 5 Input Value - Multiplex 2 0 - 6553.5 40359 Sensor 5 Input Value - Multiplex 3 0 - 6553.5 40360 Sensor 5 Input Value - Multiplex 4 0 - 6553.5 40361 Sensor 5 Input Value - Multiplex 5 0 - 6553.5 40362 Sensor 5 Input Value - Multiplex 6 0 - 6553.5 40363 Sensor 5 Input Value - Multiplex 7 0 - 65
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40398 Sensor 7 High Alarm Time Month 40399 Sensor 7 High Alarm Time Day 40400 Sensor 7 High Alarm Time Hr 40401 Sensor 7 High Alarm Time Min 40402 Sensor 7 Low Alarm Time Month 40403 Sensor 7 Low Alarm Time Day 40404 Sensor 7 Low Alarm Time Hr 40405 Sensor 7 Low Alarm Time Min 40406 Sensor 7 Calibration Time Month 40407 Sensor 7 Calibration Time Day 40408 Sensor 7 Calibration Time Hr 4040
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Sentry MODBUS I/O Memory Map Modbus Address Parameter Units FIX EGU 40443 Sensor 8 High Conc. Time Month 40444 Sensor 8 High Conc. Time Day 40445 Sensor 8 High Conc. Time Hr 40446 Sensor 8 High Conc. Time Min 40447 Sensor 8Low Conc. Time Month 40448 Sensor 8 Low Conc. Time Day 40449 Sensor 8 Low Conc. Time Hr 40450 Sensor 8 Low Conc. Time Min 40451 Sensor 8 Trouble Time Month 40452 Sensor 8 Trouble Time Day 40453 Sensor 8 Trouble Time Hr 40454
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Sentry MODBUS I/O Memory Map Read/Write Parameters High Alarm Limits Modbus Address Parameter Units FIX EGU 40501 Sensor 1 % / PPM 0 - 65535 40502 Sensor 2 % / PPM 0 - 65535 40503 Sensor 3 % / PPM 0 - 65535 40504 Sensor 4 % / PPM 0 - 65535 40505 Sensor 5 % / PPM 0 - 65535 40506 Sensor 6 % / PPM 0 - 65535 40507 Sensor 7 % / PPM 0 - 65535 40508 Sensor 8 % / PPM 0 - 65535 Low Alarm Limits 40511 Sensor 1 % / PPM 0 - 65535 40512 Sensor 2 % / PPM 0 - 65535 40513 Sensor
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Sentry MODBUS I/O Memory Map 40550 Sensor 4 Calib. Coeff. 1 k1 ccn ccn ccn 40551 2 k2 vmin vmax vmin 40552 3 k3 vmax - vmax 40553 4 n1 gasfac - - 40554 5 n2 - - - 40555 6 n3 - - - 40556 7 bp12 - - - 40557 8 bp23 - - - 40558 9 ccn - - - 40560 Sensor 5 Calib. Coeff. 1 k1 ccn ccn ccn 40561 2 k2 vmin vmax vmin 40562 3 k3 vmax - vmax 40563 4 n1 gasfac - - 40564 5 n2 - - - 40565 6 n3 - - - 40566 7 bp12 - - - 40567 8 bp23 - - - 40568 9 ccn - - -
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Sentry MODBUS I/O Memory Map Control Bits Modbus Address Parameter Units FIX EGU 40601 System Reset 40602 Alarm Reset 40603 History Reset 40610 System Time Month 40611 System Time Day 40612 System Time Hr 40613 System Time Min 40614 Latch High Alarms - Sensor 1 40615 Latch High Alarms - Sensor 2 40616 Latch High Alarms - Sensor 3 40617 Latch High Alarms - Sensor 4 40618 Latch High Alarms - Sensor 5 40619 Latch High Alarms - Sensor 6 40620 Latch High Alarms - S
