Fluke PG9000 Series, Operation And Maintenance Manual

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4. REMOTE OPERATION
Page 139 © 2011 Fluke Calibration
PASSTHRUx
Purpose To allow the host PC to communicate with a device connected to the PG9000 COM
ports.
Syntax “PASSTHRU x = cmd ”
“PASSTHRU x ”
Arguments x :
cmd:
2, 3 or 4 to access the COM2, COM3 or COM4 ports.
The command string to send to the external device
Remarks The COM2, COM3 and COM4 ports are used by the PG9000 to communicate with external
devices. The PASSTHRU command allows direct communications with a device connected
to one of these ports as long as the device is not actively being used by the PG (such as an
active barometer or vacuum sensor on COM2 or a PPC pressure controller on COM3). The
device must be set to the same port settings as the PG and accept a carriage return followed
by a line feed as a terminator.
When the PASSTHRU command is used to send a command to a device, any replies from
the device will be passed back as a reply. This pass back function continues until any other
command is sent to the PG9000. If the device does not reply, then no reply will be generated
from the PASSTHRUx= command.
The Query format (no argument) will allow the external device to pass replies back thru the
PG9000 without issuing a command first. This continues until any other command is sent to
the PG9000.
If communicating with a PPC via the COM3 port for the purpose of polling the PPC output
pressure, the preferred command is PPCPR.
Example Cmd sent:
Query reply: “PASSTHRU3=VER”
“FLUKE PPC4 VER1.01a” (device is a PPC4 on COM3)
Error See Section 4.3.3 Error Messages
ERR #1
ERR#27 Invalid port ‘x’
The device on the port is currently active
See Also “COM x ”, “PPCPR”
PCTx(=)
Purpose Set or read the source for the piston-cylinder temperature measurement. Also optionally
sets the USER defined measurement.
Syntax “PCTx=source, meas”
“PCTx=source”
“PCTx”
Default
20
°
C if the source is DEFAULT
Argument x: The setup number from 1 to 13. See the SETUP command.
Setup is reserved for remote command use only.
Source: The measurement source. This can be INTERNAL, NORMAL,
or USER.
Meas: The current measurement used. This can only be set if the
source argument is USER. If specified, the limit for this
argument is 0 to 40
°
C
Remarks PG9000 has two internal piston-cylinder mounting post PRT sensors, using the average
of the two values for piston-cylinder temperature in calculations. Optionally another
source may be used for this measurement. The measurement source can be the
internal sensors, a user defined fixed value, or the normal value. The Setup number
allows 13 separate configurations for each sensor. The SETUP command selects which
of the 13 to use. Setup number 1 is restricted as INTERNAL only to serve as
manufacturer’s fixed Setup, and cannot be changed.
The meas argument is used to allow the user to define a fixed value if the source is set
to USER. The reply will always include the source and the meas fields.
Example Typical command:
Typical reply: “PCT2=USER,25”
“USER,25dC”
Typical command:
Typical reply: “PRT9=INTERNAL”
“INTERNAL, 21.34 dC”
Error See Section 4.3.3 Error Messages
ERR #1
ERR #2
ERR #3 The setup number x is invalid
The source argument is invalid
The meas argument is invalid
See Also 3.11, 1.2.1.3, “SETUP”