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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