Baker Hughes Druck 8000 Series, Инструкция по эксплуатации

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Copyright 2010 Baker Hughes Company.
14 | TERPS Instruction Manual–English
6.2 Communication Modes
The TERPS smart transducer operates in one of two operating modes: direct and addressed.
These modes are controlled by sending the transducer an address number, see Section 6.3.2 on
page 15.
6.2.1 Direct Mode
The valid address in direct mode is zero. In this mode, the transducer continuously transmits data
at an interval set by the user. Before any command can be sent to the transducer, the data stream
must be stopped by sending a single byte character or back space. The stop character is lost and
not parsed with the instruction. The data stream is stopped for 20 seconds unless further
commands are sent.
Note: On shipment, sensors are set to direct mode as default.
6.2.2 Addressed Mode
The valid address in addressed mode is a number between 1 and 32. In this mode, data has to
be polled from the transducer using the valid address. All devices on the network respond to the
address 0 for the G, R, I and Z commands. The reply timing depends on the address of the
sensor. Each sensor delays its response until all sensors with a lower address have replied.
Note: The 0:I command returns only the sensor serial number.
6.3 Command Syntax
A sequence of single letter command, preceded by a space, controls the transducer. Some
commands require one or more numeric values to follow the command letter. The correct number
of parameters must be sent for this particular command. The following command syntax rules
apply:
Table 8: Query Summary
Group Function Query
General Set-up Automatic transmission interval? A,?
Device address? N,?
Pressure measurement speed? Q,?
Pressure units? U,?
PIN Set-up a
a. PIN functions are disabled for USB versions.
Digital output calibration C,?
Full-scale value? H,?
User message? M,?
Communication settings? O,?
PIN set? P,?
Offset value? S,?
Factory Set-up
(Query only)
Crystal Reference Frequency E,?
Load Calibration Coefficients L,?
Analogue/Digital Converter Set-up T,?
Transducer Type and Settings V,?
Write to EEPROM W,?