TDK-Lambda Genesys series Technical Manual page 44

7.8.1. Read System Error
This is query to read error messages from the power supply. It is recommended that after
any command is sent over the LAN, the SYSTEM:ERROR should be read to verify the
command is accepted. The SYSTEM:ERROR queue can also be set to report faults which
have shut-down the supply's output
The SYSTEM:ERROR is a queue, or stack, that holds the last ten messages. The last error
message entered is the last one read. It is a good idea to read the SYSTEM:ERROR queue
regularly. When a faulty command is sent and the SYSTEM:ERROR is read, the error
message could relate to an earlier command.
The SYSTEM:ERROR queue may be cleared by:
− Sending the *CLS command (this also clears other registers)
− Sending the SYSTEM:ERROR:ENABLE command
− Reading the errors until the response is 0,"No error"
Power supply shut-down faults will be reported by the SYSTEM:ERROR queue if
the STAT:QUES:ENAB 255 command is first sent (or a value other than 255, see
section 7.8.15 for bit descriptions). If a fault is reported, no further faults are reported by
SYSTEM:ERROR unless the event registers are cleared by sending STAT:QUES? or
*CLS.
See Section 10 for a complete list of SYSTEM:ERROR messages
Syntax:
SYSTem:ERRor?
Example:
SYST:ERR?
Response:
<error number>,"<error description>;<serial address>"
Examples:
0,"No error"
-222,"Data out of range;address 06"
+321,"AC fault shutdown;address 02"
7.8.2. Enable System Error
This command clears any error messages from the SYSTEM:ERROR queue. No other
status registers are affected
For the LAN option, the SYSTEM:ERROR messages are automatically enabled at power-
up. (With the Genesys™ IEEE option, SYST:ERR:ENAB is required to enable the
SYSTEM:ERROR messages)
Syntax:
SYSTem:ERRor:ENABle
Example:
SYST:ERR:ENAB
Query: This command has no query form
<error number> is a value from –350 to +399
Negative values are errors. The command was not understood
or it could never be executed by the power supply
Positive values are warnings. The command was understood
but it could not be executed at this time, or a fault has
shut-down the output
<error description> is brief description of the error
<serial address> is the address of the reporting power supply.
It is the supply's RS-485 address set using the front panel.
(see section 9.2.2). The address will be "99" if multiple RS-485
supplies report the same fault condition
(this response has no serial address)
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