Andel Bundguard 5 - Input Registers; Holding Registers; Custom Function Codes; Getnumevents

Bundguard 5 12.01.2022 Rev.4
17
37
Over current protection
Over-current pump disable enabled when set
38
Second filter enabled
Two filters are configures for pressure measurement when set
>38
Reserved
Unused in application – Do not use
4.1.10.3 Input Registers
The BundGuard allows read-only access to a variety of register values on the BundGuard.
These are listed below:
Reg#
Name
Description
Format
0
Filter 1 pressure [0]
The instantaneous pressure of pressure
sensor 1
Bit 0-15 of floating point
1
Filter 1 pressure [1]
Bit 16-31 of floating point
2
Filter 2 pressure [0]
The instantaneous pressure of pressure
sensor 2
Bit 0-15 of floating point
3
Filter 2 pressure [1]
Bit 16-31 of floating point
4
Pump 1 current
The instantaneous current drawn by pump 1
Unsigned integer
5
Pump 2 current
The instantaneous current drawn by pump 2
Unsigned integer
6
Flow total [0]
The total volume of liquid pumped from the
bund in Litres
Bit 0-15 of floating point
7
Flow total [1]
Bit 16-31 of floating point
8
Cycle Count
The total number of times the pump(s) have
switched ON.
Unsigned integer
9
Flow rate [0]
The instantaneous flow rate measured by the
outlet flow meter
Bit 0-15 of floating point
10
Flow rate [1]
Bit 16-31 of floating point
Values provided in a floating point format conform to 32-bit floating point bit structuring. This
formatting is detailed in the floating point section.
4.1.10.4 Holding registers
Read and write access is provided for the following values on the BundGuard:
Reg#
Name
Description
Format
0
Filter 1 pressure threshold [0]
The pressure that causes an
over-pressure 1 alarm
Byte 0 of floating point
1
Filter 1 pressure threshold [1]
Byte 1 of floating point
2
Filter 2 pressure threshold [0]
The pressure that causes an
over-pressure 2 alarm
Bit 0-15 of floating point
3
Filter 2 pressure threshold [1]
Bit 16-31 of floating point
4
Pump 1 current threshold
The current that causes an
over-current alarm
Unsigned integer
4.1.10.5 Custom function codes
The BundGuard allows access to the non-volatile memory where event logs are stored. This access is
provided through the use of a manufacturer-defined function code that is permissible within the
MODBUS.
Request formatting must adhere to the MODBUS specification, whereby the familiar address, function
code, data packet, and cyclic redundancy check fields are compulsory.
4.1.10.6 getNumEvents
getNumEvents returns the quantity of log entries available to requested of the BundGuard. This value
can be up to and including 144.
A data field is not required in the request for the event count number but is provided in the response.