Issue

The NetBotz 250 Modbus Register Map references this FAQ article to further explain the possible responses/ENUM for the following register/data point:

• MM_SENSOR_1_DISCRETE_STATE

Product Line

• NetBotz
  • ​NetBotz Rack Monitor 250

Environment

• All serial numbers
• All firmware versions
• Modbus TCP/serial users

Cause

This article will provide additional information and detail for Modbus users.


Resolution

Within the NetBotz 250 Register Map, discrete (state) sensors refer back to MM_SENSOR_1_DISCRETE_STATE as needed to provide what possible responses may exist. Modbus responses of 1 and 0 may refer to different discrete sensor states depending on sensor type. The below information clarifies what is mentioned in the NetBotz 250 Register Map document.

MM_SENSOR_1_DISCRETE_STATE

The following responses are supported for MM_SENSOR_1_DISCRETE_STATE:

• 0 = Open (Low)
• 1 = Closed (High)
• 2 = Not Connected

The above possible responses will also be used by the following supported sensor types for MM_SENSOR_1_DISCRETE_STATE:

• Smoke (NBES0307) - 0 = No Smoke, 1 = Smoke Detected, 2 = Not Connected
• Fluid (NBES0301) - 0 = No fluid, 1 = Fluid Detected, 2 = Not Connected
• Vibration (NBES0306) - 0 = No Vibration, 1 = Vibration Detected, 2 = Not Connected

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