RPM4™ OPERATION AND MAINTENANCE MANUAL

AutoZ Make sure AutoZ is ON for all RPTs and measurement modes (see Section 3.5.1).

Certain RPM4 settings may be changed when an RPM4 is operated with a PPC3. Settings that may be changed when an RPM4 is used as a PPC3 external device include:

SDS

Closed or open status may be changed and SDS full time off will be

 

overwritten to full time on (see Sections 3.3.8, 3.5.4)

AutoRange range

May be rewritten (see Section 3.3.4).

Display

When an RPM4 is initialized by PPC3 as an external device, the

 

second line of the RPM4 display is <PPC3 EXT DEV: IDLE>. When

 

the RPM4 is the active Q-RPT being used by the PPC3, the second

 

line of the RPM4 display is <PPC3 EXT DEV: ACTIVE>

Range

Active range may be changed (see Section 3.3.1).

Unit of measure

Active unit may be changed (see Section 3.3.2).

Measurement mode

Active mode may be changed (see Section 3.3.3).

Lo Vent

Setting may be changed (see Section 3.5.7.4).

Communications

For a PPC3 to be able to identify and communicate with an RPM4,

 

the RPM4’s COM1 port must be set to:

 

Baud rate

9200 to 19200

 

Parity

Even

 

Data bits

7

 

Stop bit

1

 

When RPM4 is activated by a a PPC3, the PPC3 sets the RPM4

 

COM1 port baud rate to 19200. The COM1 port keeps this setting

 

until power is cycled. Cycling power restores the previous baud rate

setting. The same is true for the COM2 of the first RPM4 in a chain of two RPM4s used with a PPC3.

When RPM4 is initialized as an external device to a PPC3 pressure controller, the RPM4 front panel keypad is locked out and the second line of the display becomes:

<PPC3

EXT DEV: IDLE>

(if RPM4 is initialized by PPC3 but not currently in use)

<PPC3

EXT DEV: ACTIVE>

(if RPM4 is initialized by PPC3 and is currently in use)

After using an RPM4 as an external device for a PPC3, cycle power to return to the previous RPM4 settings, restore front keypad capability and return to the normal main run screen.

© 2004-2007 DH Instruments, a Fluke Company

Page 22

Page 32
Image 32
Fluke RPM4 manual AutoRange range, Display, Unit of measure, Measurement mode, Lo Vent, Communications, Baud rate, Parity