Message Mapping - Agilent Technologies TV 301-P Bedienungshandbuch

Message mapping

The communication is based on the continuous data
exchange capability of the ProfiBus standard, where the
master sends continuously the entire slave configuration
and reads back the entire slave status.
For this purpose one Input (from slave to master) and
one Output (from master to slave) buffers are provided.
All the needed parameters are mapped inside each
buffer.
The following tables summarise the ProfiBus parameter
access, related to the corresponding windows serial
protocol (for this protocol please refers to the serial in-
terface paragraph).
PARAMETER BUFFER (17 BYTES)
OFFSET SIZE UNIT
BYTE BYTE RES
0 1
1 1
2 1
3 1
4 1 sccm
5 2
7 2 Hz/mA/s
9 2
11 2 0.2*s
13 2 0.2*s
15 1 Bit Field
PROFIBUS MESSAGE MAPPING
RANGE
°C 15-35 Water Cooling Max Temperature
(not used – insert 20)
°C 1-5 Water Cooling Hysteresis
(not used – insert 2)
% 1-99 Setpoint Hysteresis
Set the hysteresis on set point output (see set point out paragraph)
°C - Heather Jacket Temperature Setting
Specific option, not available on standard models
- Flowmeter Threshold
Specific option, not available on standard models
RESERVED
- Setpoint Value
Set the threshold for the set point out
s 0-99999 Setpoint Mask Time
Set the time during the controller does not drive the set point out
0-65535 Vent Valve Opening Delay
0 = inf. Set the delay time between the stop command and vent opening.
Valid only in "purge/vent auto mode" (Parameter Buffer byte-15 B1=0);
default = 15; 0 = infinite (the valve will never open)
0-65535 Vent Valve Open Time
0=inf
Set how long the vent will remain open, then both purge and vent will be
closed. Valid only in "purge/vent auto mode" (Parameter Buffer byte-15
B1=0); 0 = infinite (the valve remain open till a start command)
B0 - Vent & Purge Controlled Vent Procedure/Man
0 = Controlled Vent Procedure
1 = Manual (see Par. Buff. byte-15-B1)
B1 - Vent & Purge Remote/Profibus
0 = serial or Profibus (see Out. Buff. byte-0 B3 and B2)
1 = remote ( the valves are driven by the inputs on remote I/O connector)
B2 - Interlock Type
0 = continuos (the interlock must be present to run the pump)
1 = at start (the interlock must be present only at start command)
B3 - Setpoint Logic
0 = active close (NO)
1 = active open (NC)
B4 - Heather Jacket Mode (Auto/man)
Specific option, not available on standard models
B5 - Gas Load Type
0 = Ar
1 = N
2
B6 - Purge Gas Type
0 = N
2
1 = Ar
B7 - Reserved
The interface doesn't any scaling operation on the
read/written parameters. It acts only as a gateway be-
tween the ProfiBus network and the pump's controller
serial interface. As a consequence of this, the scale and
the meaning of some parameters depends directly to
the specific model of Turbo Pump controller connected
to the interface.
DESCRIPTION
46
TECHNICAL INFORMATION
WIN
SERIAL
158
159
105
113
115
102
103
126
147
125
146
110
104
157
114
87-901-001-01 (A)
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