B800-00-880 Issue A
Page 64
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Maintenance
Note:
The Alarm LED error flash sequence is capable of signalling multiple fail conditions. For example, error
flash code sLssLs signifies both error 2 (Controller failed internal configuration and calibration operation)
and error 5 (pump internal measurement system disconnected or damaged).
5.5.3
Decoding system status words
If you are using the serial communications link you will be able to access further information that may be useful for
fault finding. When you send a query to monitor measured motor speed, the pump also returns a System Status Word.
The send command is as follows:
You will receive the following reply, where the first returned number refers to motor rotational speed in revolutions
per second (Hz):
The System Status Word returned is made up of 8 hexadecimal digits. To decode this word, you must convert each
digit into a 4-digit binary number. (
Table 25
is provided as an aid.) Follow the example below:
6
sssssL
Serial enable becomes inactive
following a Serial Start command.
Re-activate Serial Enable and send a
Serial Stop command to clear the error
code.
Command
?
v
8
5
2
cr
Reply
=
v
8
5
2
sp d
d
d
d
;
h
h
h
h
h
h
h
h
cr
2
2
8
3
0
0
2
2
0 0 1 0 0 0 1 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0
Table 28 - Hexadecimal conversion table
Hexadecimal
Binary
Decimal
0
0000
0
1
0001
1
2
0010
2
3
0011
3
4
0100
4
5
0101
5
6
0110
6
7
0111
7
8
1000
8
9
1001
9
A
1010
10
B
1011
11
C
1100
12
D
1101
13
E
1110
14
F
1111
15
Table 27 - Flashing error codes
Error flash
position
Error flash
code
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