Agilent Technologies TwisTorr 84 FS AG Bedienungshandbuch Seite 232

17 Technical Information
Letter Protocol Description
CHARACTER
"K"
CRC
"ACK"
CRC
"NACK"
CRC
Answer = after a request from the host, the Controller will
answer in one of the following ways:
When the Request is "A, "B", "C", "D", "F" the Controller will
Answer the ACK or NACK.
When the Request is "E, the Answer will contain the complete
set of the following parameters:
Tab. 7
BYTES
2÷5
6÷9
10÷11
12
232/297
ASCII
4Bh
-
06h
-
15h
-
ACK
NACK
Message
1
MSB LSB
- - X X X
TwisTorr 84 FS AG Rack Controller User Manual / 87-901-037-01 (A)
CONVERTED ASCII FOR CRC CALCULATION
-
B5h
-
FAh
-
EBh
MEANING
0 = STOP
1 = WAITING INTERLOCK
2 = STARTING
3 = NORMAL OPERATION
4, 5 = HIGH LOAD
6 = FAILURE
7 = APPROACHING LOW SPEED
Cycle Time
Pump Life
Pump Temperature
Current*