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Page 10 – Automatic Voltage Regulator (AVR) registers



Notes:

1. These are read only registers with the exception of the alarm reset.

2. Only supported on an AVR or when a controller is connected to an AVR via a comms port, there are currently no controllers capable of this.

3. The first generation 106 AVR has only a single feedback voltage sensing input which could be connected in many different configurations. We do not yet know how or even if three phase sensing will be implemented in future so no provision has been made, additional registers will need to be added for this.

4. Writing the value 0x1234 to the alarm reset register will reset any latched alarm(s).

 

Registers

Register offset Name Minimum value Maximum value Scaling factor Units Bits/ Sign
0 AVR Software major version 0 99 1   16
1 AVR Software minor version 0 99 1   16
2 AVR Software build 0 99 1   16
3 AVR boot-loader major version 0 99 1   16
4 AVR boot-loader minor version 0 99 1   16
5 AVR boot-loader build 0 99 1   16
6 AVR status (see below) 0 99 1   16
7 Reserved flags 0 0     8-16-16/16
  Integral limit reached 0 1     7/16

 

Current limit active 0 1     6/16
LED lit 0 1     5/16
Voltage switch 0 1     4/16
Frequency switch 0 1     3/16
Stability switch 1 0 1     2/16
Stability switch 2 0 1     1/16
8 Alternator frequency 0 70 0.1 Hz 16
9 Alternator feedback voltage 0 600 0.1 V 16
10 Alternator droop current 0 10 0.001 A 16
11 Alternator droop current lag/lead -180 +180 0.1 degrees 16 S
12 Auxiliary Supply voltage 0 20 0.1 V 16
13 Alternator excitation voltage 0 300 0.1 V 16
14 External pot. value 0 5000 1 Ohms 16
15 External control voltage -10 10 0.001 V 16 S
16 Voltage preset position 0 100 0.1 % 16
17 Droop preset position 0 100 0.1 % 16
18 UFRO preset position 0 100 0.1 % 16
19 P preset position 0 100 0.1 % 16
20 I preset position 0 100 0.1 % 16
21 D preset position 0 100 0.1 % 16
22 PWM output duty cycle 0 100 0.01 % 16
23 Voltage set point 0 600 0.1 V 16
24 Droop set point 0 100 0.1 % 16
25 UFRO knee set point 0 60 0.1 Hz 16
26 Alternator auxiliary winding voltage 0 300 0.1 V 16
27 Alternator excitation current 0 30 0.001 A 16
28 P set point 0 100 0.1 % 16
29 I set point 0 100 0.1 % 16
30 D set point 0 100 0.1 % 16
31 Auto frequency selection state (see below) 0 2 1   16
32-63 Reserved          
64 Alarm reset 0x1234 0x1234     16
65-255 Reserved          

 

AVR Status

Code Meaning
0 Stopped
1 Running
2 Under Frequency Roll Off active
3 Over excitation trip
4 Loss of sensing trip
5 Failed to excite trip
6 Under frequency trip
7 Invalid configuration
8 Excitation overload trip
9- Reserved

 

Auto Frequency Selection State

Code Meaning
0 Disabled
1 50Hz selected
2 60Hz selected
3- Reserved

 

Page 11 - Diagnostic - General

Notes:

5. These are read only registers.

6. Register0 gives the version as major/minor, with the major version in the upper 8 bits, the minor version in the lower 8 bits.

 

Registers

Register offset Name Minimum value Maximum value Scaling factor Units Bits/ Sign
0 Software version 0 9999 0.01   16
1 CPU power usage 0 200 1 % 16
2 Button number pressed, 0=none 0 255 1   16
3 Backup supply voltage 0 40 0.1 V 16
4-255 Reserved          

 

 

Page 12 - Diagnostic - Digital Inputs

Notes

1. These are read only registers.

2. These registers represent the state of the actual inputs to the control unit before the application of any time delays or other processing and are intended for diagnostic purposes only.

3. The number of named digital inputs may be increased in future versions of GenComm. Manufacturers may not add their own to the list of named inputs as there are no corresponding strings to identify them. Any inputs that are required but not named must be included in the list of unnamed digital inputs.

4. The meaning of the named digital input codes is shown in the table below.

5. Register 16 indicates the number of unnamed digital inputs that are supported, any software that displays these must cope with any number up to 128. Each is represented by only one bit as there is no need to indicate that it is unimplemented.

6. Unimplemented inputs (including totally unimplemented registers) return 3, not an exception.

 

Registers

Register offset Name Minimum value Maximum value Scaling factor Units Bits/ Sign
0 Emergency stop input 0 3     15/16-16/16
  Low oil pressure switch input 0 3     13/16-14/16
  High engine temp. switch input 0 3     11/16-12/16
  Remote start input 0 3     9/16-10/16
  Remote fuel on input 0 3     7/16-8/16
  Lamp test input 0 3     5/16-6/16
  Reset input 0 3     3/16-4/16
  Panel lock input 0 3     1/16-2/16
1 Start button input 0 3     15/16-16/16
  Stop button input 0 3     13/16-14/16
  Transfer to generator button input 0 3     11/16-12/16
  Transfer to mains button input 0 3     9/16-10/16
  Unimplemented 3 3     7/16-8/16
  Unimplemented 3 3     5/16-6/16
  Unimplemented 3 3     3/16-4/16
  Unimplemented 3 3     1/16-2/16
2-15 Reserved         16
16 Number of unnamed digital inputs 0 128     16
17 Unnamed digital input 1 Open Closed     16/16
  Unnamed digital input 2 Open Closed     15/16
  Unnamed digital input 3 Open Closed     14/16
  Unnamed digital input 4 Open Closed     13/16
  Unnamed digital input 5 Open Closed     12/16
  Unnamed digital input 6 Open Closed     11/16
  Unnamed digital input 7 Open Closed     10/16
  Unnamed digital input 8 Open Closed     9/16
  Unnamed digital input 9 Open Closed     8/16
  Unnamed digital input 10 Open Closed     7/16
  Unnamed digital input 11 Open Closed     6/16
  Unnamed digital input 12 Open Closed     5/16
  Unnamed digital input 13 Open Closed     4/16
  Unnamed digital input 14 Open Closed     3/16
  Unnamed digital input 15 Open Closed     2/16
  Unnamed digital input 16 Open Closed     1/16
18 Unnamed digital input 17-32 Open Closed     16
19 Unnamed digital input 33-48 Open Closed     16
20 Unnamed digital input 49-64 Open Closed     16
21 Unnamed digital input 65-80 Open Closed     16
22 Unnamed digital input 81-96 Open Closed     16
23 Unnamed digital input 97-112 Open Closed     16
24 Unnamed digital input 113-128 Open Closed     16
25-255 Reserved          

 









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