AMETEK Lx Series II Programming Manual - Manual (Page 184)

Programming Manual Lx \ Ls Series II
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8.2.13 APE Message Separators
A complete message consists of a header and an argument. Since more than one message can be
sent in a setup string, message separators included in the string between the message will make it
more readable to the human operator. Three message separators are recognized: the comma (,),
semicolon (;) and a space. Since these separators are ignored, they may be dispersed throughout a
setup string.
The following are two examples of ASCII strings with separators:
PHZA90;FRQ60;AMP115
CRL,90;FRQ50;AMP,120
8.2.14 Service Requests
After power-up the GPIB Service Request (SRQ) will be generated after any error (example. syntax,
output fault, etc.) as long as the Ls Unit is in APE mode. This SRQ output can be inhibited by the
SRQ header followed by the single digit "0". The SRQ can be re-enabled by the SRQ header
followed by 1. Sending SRQ2 causes an SRQ to be generated after the execution of a setup string
or when data is available after a measurement query. The setup string can be of any type: ramp,
calibration, etc.
The following example disables the GPIB SRQ.
SRQ0
8.2.15 Serial Poll Status Byte – Error Messages
Once the bus controller has detected the SRQ, it must determine the instrument needing service by
the Serial Poll. During the polling routine the instrument needing service will return a Status Byte
(STB) greater than decimal 63. The Status Byte values for various faults are given in Table 8-6.
Table 8-6.shows all of the possible error messages that can be generated by the AC Power
System. The equivalent error messages used in SCPI mode will be displayed on the front panel
of the AC Power System.
SRQ 1 SRQ 1 Reported Message Cause
64 0 AMP A FAULT Overload or sense line fault
65 1 AMP B FAULT Overload or sense line fault
66 2 AMP AB FAULT Overload or sense line fault
67 3 AMP C FAULT Overload or sense line fault
68 4 AMP AC FAULT Overload or sense line fault
69 5 AMP BC FAULT Overload or sense line fault
70 6 AMP ABC FAULT Overload or sense line fault
71 7 CRL FAULT Output current exceeds program value
72 8 TEMP A FAULT Amplifier over temperature
73 9 TEMP B FAULT Amplifier over temperature
74 10 TEMP AB FAULT Amplifier over temperature
75 11 TEMP C FAULT Amplifier over temperature
76 12 TEMP AC FAULT Amplifier over temperature
77 13 TEMP BC FAULT Amplifier over temperature
78 14 TEMP ABC FAULT Amplifier over temperature