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Page 16 - Control Registers



Notes:

1. These are a mixture of read only and write only registers.

2. Registers 0 to 7 contain flags that indicate the available system control functions. If a bit is set the corresponding function code is available.

3. One of the system control keys from the table below must be written into register 8 and its ones-compliment written into register 9 with a single function 16 (write multiple registers) to perform the specified system control function.

4. Writing any other value or using a function that is not available will return extended exception code 7 (Illegal value written to register) and have no affect.

5. Function codes 0 to 31 perform exactly the same function as pressing the equivalent button on the control unit.

6. Function 34 ‘reset alarms’ is not the same as function 7. The former resets any alarm condition codes that can be reset. The latter simulates a button which may or may not exist on the control unit, if it does not exist it will have no affect. If all alarm condition codes are able to be reset the shutdown, electrical trip and warning alarm active flags (as appropriate) in page 3 will consequently reset.

7. Function 34 does not under any circumstances reset the telemetry alarm flag in page 3, function 35 must be used for this.

8. Locking the user controls stops the buttons corresponding to function codes 0-31 from operating and stops any attempt to configure the unit from the user controls. It does not stop the user from viewing status information and instrumentation values.

9. Function 38 resets the Page 7 values ‘Time to next maintenance’ and ‘Time of next maintenance since 1/1/70’. The reset values are manufacturer specific, if it is desired to set one of these two items to a specific value then they can be directly written to in Page 7.

10. Function 10 resets only those alarms associated with the detection of mains failure while running in parallel with the mains, i.e. G59 alarms and ROCOF and vector shift.

11. Function 43 is used to register an 8721 display unit with an 8700 module.

12. Function 44 is used to register an 8711 display unit with an 8700 module.

13. Function 45 is used to register an 8716 display unit with an 8700 module.

14. Functions 46,47 & 48 are used as part of the data logging functionality (of the 8xxx/74xx family)

 

Registers

Register offset Name Minimum value Maximum value Scaling factor Units Bits/ Sign Read/write
0 System control function 0 supported 0 1     16/16 Read only
  System control function 1 supported 0 1     15/16 Read only
  System control function 2 supported 0 1     14/16 Read only
  System control function 3 supported 0 1     13/16 Read only
  System control function 4 supported 0 1     12/16 Read only
  System control function 5 supported 0 1     11/16 Read only
  System control function 6 supported 0 1     10/16 Read only
  System control function 7 supported 0 1     9/16 Read only
  System control function 8 supported 0 1     8/16 Read only
  System control function 9 supported 0 1     7/16 Read only
  System control function 10 supported 0 1     6/16 Read only
  System control function 11 supported 0 1     5/16 Read only
  System control function 12 supported 0 1     4/16 Read only
  System control function 13 supported 0 1     3/16 Read only
  System control function 14 supported 0 1     2/16 Read only
  System control function 15 supported 0 1     1/16 Read only
1 System control function 16-31 supported 0 65535     16 Read only
2 System control function 32-47 supported 0 65535     16 Read only
3 System control function 48-63 supported 0 65535     16 Read only
4 System control function 64-79 supported 0 65535     16 Read only
5 System control function 80-95 supported 0 65535     16 Read only
6 System control function 96-111supported 0 65535     16 Read only
7 System control function 112-127 supported 0 65535     16 Read only
8 System control key 0 65535     16 Write only
9 Compliment of system control key 0 65535     16 Write only
10-255 Reserved            

 

System control keys

Function code System control function System control key
0 Select Stop mode 35700
1 Select Auto mode 35701
2 Select Manual mode 35702
3 Select Test on load mode 35703
4 Select Auto with manual restore mode 35704
5 Start engine if in manual or test modes 35705
6 Mute alarm 35706
7 Reset alarms 35707
8 Transfer to generator 35708
9 Transfer to mains 35709
10 Reset mains failure 35710
11 Close Bus (Bus Tie Controller) 35711
12 Open Bus (Bus Tie Controller) 35712
13 Toggle Bus Open/Closed (Bus Tie Controller) 35713
14 Scroll through mode selections (mode button on 330/331/334/335) 35714
15 Enable selected mode (scroll button on 330/331/334/335) 35715
16-31 Reserved 35716-35731
32 Telemetry start if in auto mode 35732
33 Cancel telemetry start in auto mode 35733
34 Reset alarms 35734
35 Clear telemetry alarm flag 35735
36 Lock the user controls 35736
37 Unlock the user controls 35737
38 Reset the maintenance alarm 1 due times 35738
39 MSC alarm inhibit on 35739
40 MSC alarm inhibit off 35740
41 Reset the maintenance alarm 2 due times 35741
42 Reset the maintenance alarm 3 due times 35742
43 8721 Display unit registered/alive 35743
44 8711 Display unit registered/alive 35744
45 8716 Display unit registered/alive 35745
46 Start data logging (temporarily overrides the module state) 35746
47 Stop data logging (temporarily overrides the module state) 35747
48 Erase all data log files internal to the module (NOT on USB) 35748
49 Force USB drive to stop logging, ready to eject 35749
50-65535 Reserved  

 

 







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