Gc Controller Address Change; Analog Inputs And Outputs; Analog Inputs And Outputs - Emerson Daniel Danalyzer 1000 Hardware Reference Manual

Gas chromatograph
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5.7.1

GC Controller Address Change

See Section 3.4.1, this manual, for an explanation of DIP switch settings and their
determination of the GC Controller's Modbus slave address (COM ID).
When the desired GC Controller device address is known, it will be set before the Model 1000 leaves
the factory. If the GC Controller device address needs to be changed in the field, it will be necessary
to change the arrangement of an 8-position DIP switch. Refer to Section 3.4.1 for the location and
arrangement of the DIP switch settings and Figure 3-6, Figure 3-7, and Figure 3-8.
The GC Controller address on the DIP switch can be set as a 5-bit binary number with the position
marked "1" as the least significant bit. For the switch positions, OFF = 0 and ON = 1. Refer to
Section 3.4.1 for more dip switch settings.
5.8

ANALOG INPUTS AND OUTPUTS

The analog outputs can be calibrated/adjusted using a PC with the MON2000 program software.
However the user output (GC Controller analog outputs) should be measured with a good digital
meter upon initial installation at zero scale and full scale. Then the span can be set with MON2000
software from the PC so that it represents values from zero to 100 percent of the user-defined units
in use.
Nominally, calibration is made within a range of 4-20 milliamperes (mA) output from each analog
channel. However, zero scale calibrations can be set with 0 mA output, and full scale calibration can
be set with up to 22.5 mA output. (Refer also to Drawing DE-20782.) If there is reason to suspect
that the span on any particular channel might be off after a period of time and heavy use, then the
analog output for that channel should be recalibrated.
5-34
MODEL 1000
MAINTENANCE

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