Varian Turbo-V 301, Instruction Manual

Page: 81 / 92

TECHNICAL INFORMATION
7 6 87-900-940-01 ( F )
When the Request is "E, the Answer will contain the
complete set of the following parameters:
BYTES MEANING
1
MSB LSB
- - - - X X X X
0 = STOP
1 = WAITING INTERLOCK
2 = STARTING
3 = NORMAL OPERATION
4, 5 = HIGH LOAD
6 = FAILURE
7 = APPROACHING LOW SPEED
2
÷
5 Cycle Time
6
÷
9 Pump Life
10
÷
11
Pump Temperature
12 Current*
13 Voltage*
14
÷
17
Frequency
18
÷
19
Cycle #
20 R1 Status
21 R2 Status
22 CRC
*The values for current and voltage are given as numbers,
scaled from 0 to 255, where 0 corresponds to 0 V and 255
to the full scale voltage (130 V) or current (2.5 A).
When the Request is "G", the Answer will contain a string
of 11 characters with the following parameters:
BYTES MEANING
1-2 Pump cycles number
(integer coded in 2 bytes)
3 Speed threshold
4-7 Run up time in seconds
(long coded in 4 bytes)
8 Deat time
(0 = NO 1 = YES)
9 Reserved
10 Soft Start mode
(0 = NO 1=YES)
11 CRC
When the configuration parameters have to be changed,
send a
Request string a string with 9 characters of the
following type:
"H" + .... data .... + CRC
The following parameters can be changed:
BYTES MEANING
1 Speed threshold
2-5 Run up time in seconds
(long coded in 4 bytes)
6 Deat time
(0 = NO 1 = YES)
7 Reserved
8 Soft Start mode
(0 = YES 1 = NO)
9 CRC
When the
Request
is "I" (Status readings), the
Answer
will contain a string of 2 characters with the following
parameters:
BYTES MEANING
1
MSB LSB
- - X X X X X X
0 = STOP
1 = WAITING INTERLOCK
2 = STARTING
3 = NORMAL OPERATION
4, 5 = HIGH LOAD
6 = FAILURE
7 = APPROACHING LOW SPEED
R2 status 0 = OFF 1 = ON
R1 status 0 = OFF 1 = ON
2 CRC
When the Request is "J" (Numerical readings), the
Answer
will contain a string of 5 characters with the
following parameters:
BYTES MEANING
1 Current (0-255 scaled)
2 Voltage (0-255 scaled)
3 Rotational speed KRPM
4 Pump temperature °C
(0-254 temperature reading, 255 = fail)
5 CRC
When the Request is "K" (Counters readings), the
Answer will contain a string of 11 characters with the
following parameters:
BYTES MEANING
1-4 Cycle time
5-8 Pump life
9-10 Cycle number
11 CRC
On request a sample program in QBasic language is
available by Varian.