SE Powertag alarm messages

[AlexLV]

Hi, I use PAS400 and powertag devices to measure energy consumption and other values.

Unfortunately default profile did not provide alarms.

From powertag ModBus description I found I can add some more parameters to read additional info.

Questions:

1. How to add to modbus json profile for reading BITMAP and ASCII data types?
2. How to decode BITMAP info?

Info I have from Modbus  document:

Load Monitoring - Alarm:
address: 0x0CE1
Register: 3298
N: 2 (length=??)
R/W: R
TYPE: BITMAP
Invalid value: 0x00000000
Function: 3, 100-4

Description:

Validity of the alarm bitmap (0 = Invalid / 1 = Valid) – refer to register 3300
• Bit 0 = Validity of Voltage phase loss alarm(1)
• Bit 1 = Validity of Current overload when voltage loss alarm(1)
• Bit 2 = Validity of Current short-circuit alarm
• Bit 3 = Validity of Current alarm 45% alarm(1)
• Bit 4 = Validity of Load current loss alarm(1)
• Bit 5 = Validity of Overvoltage 120% alarm(1)
• Bit 6 = Validity of Undervoltage 80% alarm(1)
• Bit 7 = Validity of Battery low pre-alarm(2)
• Bit 8 = Validity of Heat alarm status alarm(3)
• Bit 9 = Validity of Battery low alarm(4)
• Bit 10 = Validity of Preventive maintenance on the device alarm(5)
• Bit 11 = Validity of Device Replacement alarm(6)
• Bit 12 = Validity of Current Alarm 50%(1)
• Bit 13 = Validity of Current Alarm 80%(1)
• Bit 15 =  Validity of Ground Fault Alarm (7)
• Bit 16–31 = Reserved

Regarding ASCII type:

address:0x7970
register:31089
N: 10 (length=??)
R
-
-
type: ASCII

Invalid value: 0x0000000000000000000000000000000000000000
3, 100-4
Description: Serial number

BR,

Alex

[admin]

Bitmap is an unsigned integer. Here's a similar example: https://forum.logicmachine.net/showthrea...4#pid36454
In your case use uint32 instead of uint16

To read the serial number use string data type and add "read_count": 10 to the mapping field.