LTH Electronics MTD75, Operation Manual

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Appendix F
MTD75 Operation Guide
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Appe
ndix F
Appendix F – Modbus RS485 Discretes
Note.
The availability of some of the discretes depends upon the configuration of the controller.
Discrete # Value Semantics of Values
Relay State
500 Biocide A Manual Dosing State 0 = Inactive
1 = Active
501 Biocide B Manual Dosing State 0 = Inactive
1 = Active
502 Manual Bleed State 0 = Inactive
1 = Active
503 Inhibitor Manual Dosing State 0 = Inactive
1 = Active
504 pH Control Manual Dosing State 0 = Inactive
1 = Active
Level Switch State
510 Biocide A Tank Level Switch 0 = Inactive
1 = Active
511 Biocide B Tank Level Switch 0 = Inactive
1 = Active
512 Inhibitor Tank Level Switch 0 = Inactive
1 = Active
513 pH Control Tank Level Switch 0 = Inactive
1 = Active
Pre Bleeding State
520 Biocide A Pre Bleeding 0 = Inactive
1 = Active
521 Biocide B Pre Bleeding 0 = Inactive
1 = Active
522 Inhibitor Pre Bleeding 0 = Inactive
1 = Active
523 pH Control Pre Bleeding 0 = Inactive
1 = Active
Bleed Inhibited State
530 Bleed Relay Inhibited 0 = Inactive
1 = Active
Redox Sensor User Calibration State
555 Redox Sensor User Calibration 0 = Inactive
1 = Active
Electrodeless Conductivity Sensor User Calibration State
560 Electrodeless Conductivity Sensor User Calibration 0 = Inactive
1 = Active
561 Electrodeless Conductivity Temperature User Calibration 0 = Inactive
1 = Active