DH Instruments PPC4, Руководство по эксплуатации и обслуживанию

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6. REMOTE OPERATION
Page 139 © 2009 DH Instruments, a Fluke Company
“UNIT KPA” or “UNIT? KPA” (Generates a reply. User must wait for
reply before continuing.)
“MMODE A” or “MMODE? A” (Generates a reply. User must wait for
reply before continuing.)
“PS 100” or “PS? 100” (Generates a reply. User must wait for
reply before continuing.)
6.4.2.2 Using Query Type Commands
The QUERY type of program message just requests data from the PPC4.
Placing the query operator
“?” immediately after the command creates a query.
Software must wait for a reply with a query. If any type of program message is sent to
the PPC4 after a query before receiving a reply, the program message will be
discarded and an error will be generated. Errors are reporting using the IEEE
Std. 488.2 status reporting model. A Query program message always ends with
a question mark. Most queries will return a reply within 200 ms except:
“PR?” , “PRR?” , “SR?” , “ATM?” , “RATE?” : Up to 2.0 seconds.
“RPT” , “ARANGE” : Up to 10 seconds
The syntax for using a QUERY program message is listed next to the keyword
“Query:” in each program message summary in Section 6.5.4 .
6.5 Commands
6.5.1 Programming Messages
Table 21. Program Message List
# Send a command string out of the PPC4 COM2 port.
ABORT Stop pressure generation.
ARANGE Read or set a new AutoRange to use.
ATM Read the current atmospheric pressure (on-board barometer).
AUTOPURGE Read or set the status of the automatic purge function.
AUTOVAC Read or set the status of the control reference (EXHAUST port).
AUTOZERO Read or set the status of the AutoZ automatic zeroing function.
CALAMB Read or set the on-board barometer calibration
CMDTERP
Gets or sets the command interpretation header.
COM1 Read or set the configuration of the COM1 port.
COM2 Read or set the configuration of the COM2 port.
DATE Read or set the current date.
DF Decrease the pressure quickly (fast).
DISPUNC Enable or disable display of uncertainty and select the display mode
DP Decrease the pressure a given amount.
DRV Read or set the status of the external valve drivers.
DS Decrease pressure slowly.
ERR Read the last error message.
GPIB Read or set the GPIB interface address.
HEAD Read or set the fluid head settings.
HS Read or set the current control hold limit in pressure.
HS% Read or set the current control hold limit in percent span of the active range.
ID Read or set the PPC4 alphanumeric asset ID tag.
IF Increase the pressure quickly (fast).
IP Slowly increase the pressure a given amount.