HELIX GRANVILLE-PHILLIPS Convectron ATM, Инструкция по эксплуатации

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RS–485 Module Operation
Convectron
®
ATM Vacuum Gauge Module Instruction Manual
41
Be
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S–48
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Once the module is operating, you may use RS–485 commands to perform
the tasks listed in Table 4-3.
Table 4-2 Front panel features
Feature Description
Optional LED pressure display • Pressure range: 1.0 x 10
–4
Torr to 9.9 x 10 2 Torr
• Can indicate vacuum chamber pressure measured by Convectron gauge or
differential pressure measured by differential pressure sensor
• Pressure value: two significant digits, 1-digit exponent, and + or – sign for the
exponent, in
±
XX
±
Y format
• If differential pressure is indicated, + or – sign to left of 2-digit window indicates
positive or negative pressure differential, and + or – sign to left of 1-digit
window is for the exponent
• If vacuum chamber pressure is indicated, + or – sign to left of 2-digit window
does not illuminate, and + or – sign to left of 1-digit window is for the exponent
Pressure unit indicators Indicate pressure measurement unit (Pa, mBar, or Torr)
Setpoint activation indicators • Setpoint indicators are ON (green) when relays are activated
• Activation state for relays is determined by relay configuration
Table 4-3 Tasks and page references for RS–485 module operation
Task For instructions, see this page
Programming module address, parity, and baud rate See page 42
Programming or reading relay setpoints and activation direction See page 49
Programming or reading relay assignments See page 53
Reading activation or deactivation status of relays See page 53
Reading pressure values See page 55
Setting or reading pressure unit See page 55
Setting display for vacuum chamber pressure or differential pressure See page 55
Calibrating Convectron gauge at atmospheric pressure See page 56
Calibrating Convectron gauge at vacuum chamber pressure See page 56
Calibrating differential pressure sensor zero See page 57
Reading firmware version for module See page 57
Resetting parameters to factory defaults See page 58