55xGenComm1_29
41
GenComm Page 7 - Accumulated Instrumentation
Registers
These are all read/write registers.
Register
offset
Name
Mini value
Max value Scale
factor
Units Bits/
Sign
0-1
Current time since 1/1/70
0
4.29 x10
9
1
Secs
32
2-3
Time to next maintenance -2.14 x10
9
2.14
x10
9
1
Secs
32S
4-5
Time of next maintenance
since 1/1/70
0 4.29
x10
9
1
Secs
32
6-7
Engine run time
0
4.29 x10
9
1
Secs
32
8-9
Positive KW hours
0
4.29 x10
9
0.1
KW
hour 32
10-11
Negative KW hours
0
4.29 x10
9
0.1
KW
hour 32
12-13
KVA hours
0
4.29 x10
9
0.1
KVA
hour 32
14-15
KVAr hours
0
4.29 x10
9
0.1
KVAr
hour 32
16-17
Number of starts
0
99999
32
18-255 Reserved
NOTE:- Positive KW hours, negative KW hours, KVA hours and KVAr hours values
can only be read from a 550 or 555 module fitted with the Power measurement option. This is also
sometimes referred to as “Enhanced instrumentation”.
Attempting to read these values from a “basic” instrumentation module will return an
“unimplemented” response.
NOTE:- Time to next maintenance and Time of next maintenance is not available
on pre version 2.0 550 / 555 modules.
Attempting to read these values from a version 1.x module will return
“unimplemented”.
NOTE:- Number of starts is not available on pre version 3.0 550 / 555 modules.
Attempting to read number of starts from a version 1.x or 2.x module will return
“unimplemented”.