RPM4/HPMS A70M/A20M-AF Reference Pressure Monitor with High Pressure Mounting System Operation and Maintenance Manual

4. REMOTE OPERATION
Page 85 © 2007 DH Instruments, a Fluke Company
GPIB
Purpose
Read or set the GPIB interface address.
Command
Query
“GPIB addr”
“GPIB?”
Classic
“GPIB=addr”
“GPIB”
Defaults
“GPIB 10”
Arguments Addr:
The address of the IEEE-488 (GPIB) interface (1 to 30)
Remarks
The GPIB address is changed following the reply of this command. Each device on a GPIB
interface bus requires a unique address.
Example
(enhanced)
Cmd sent:
Query reply
“GPIB 21”
“21” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply
“GPIB? 21”
“21”
Example
(classic)
Sent:
Reply:
“GPIB=21”
“21”
Errors
ERR# 6: The argument is not within given limits.
See Also:
3.5.2.2
HEAD
Purpose Read or set the fluid head settings.
Command
Query
“HEAD height, units, fluid”
“HEAD?”
Classic “HEAD=height, units, fluid”
“HEAD”
Defaults “HEAD 0, cm, N2”
Arguments
height:
The height of the test in relation to the RPM4. The value is positive if the test is
above the RPM4, or negative if below the RPM4. The value can be between -
9999 and 9999. Setting the value to ‘0’ disables the head correction.
units:
The height units. This must be “in” or “cm”.
gas:
The fluid type. This must be “N2”, “Air”, “He”, “Oil”, “H2O”, or “User”.
Remarks The RPM4 can make a fluid head correction to allow it to display the pressure at a level other than
the reference level of the RPM4.
Example
(enhanced)
Cmd sent:
Query reply:
“HEAD? 10,in,N2”
“10, in, N2”
Example
(classic)
Sent:
Reply:
“HEAD=10,in,N2”
“10, in, N2”
Errors ERR# 2:
ERR# 6:
ERR #7:
The fluid text is too long
The height is not within given limits or the unit is invalid.
The fluid text is invalid
See Also: 3.3.7, 3.5.3
ID
Purpose
Read or set the user defined instrument identification label.
Command
Query
“ID string”
“ID”
Classic
“ID=string”
“ID”
Arguments String:
An alphanumeric string up to 12 characters long.
Remarks
The user defined ID label can be used to allow the user to “tag” the RPM4 with a unique
identifier. This ID is stored in non-volatile memory and cannot be erased by a power failure,
system fault or reset. The ID should not be changed frequently, as the non-volatile memory
may fail after 100,000 write operations.
Example
(enhanced)
Cmd sent:
Query reply
“ID RPM4 #A01”
“RPM4 #A01” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply
“ID? RPM4 #A01”
“RPM4 #A01”
Example
(classic)
Sent:
Reply:
“ID=RPM4 #A01”
“RPM4 #A01”
Errors
ERR# 6 The ‘string’ argument was longer than 12 char.
See Also
3.5.5.4