KEPCO KLP SERIES, Operator'S Manual

Page: 58 / 110

3-18
KLP073008
tener). Tables 3-3 and 3-4 define the messages sent to the KLP, or received by the KLP, via the
IEEE 488 bus in IEEE 488 command mode and IEEE 488 data mode, respectively. These mes-
sages are enabled during the “handshake” cycle, with the KLP power supply operating as either
a Talker or a Listener.
3.5.1 CHANGING THE GPIB ADDRESS
See PAR. 3.2.8.
TABLE 3-2. IEEE 488 (GPIB) BUS INTERFACE FUNCTIONS
FUNCTION
SUBSET
SYMBOL
COMMENTS
Source Handshake SH1 Complete Capability (Interface can receive multiline messages)
Acceptor Handshake AH1 Complete Capability (Interface can receive multiline messages)
Talker T6 Basic talker, serial poll, unaddress if MLA (My Listen Address) (one-byte address)
Listener L4 Basic listener, unaddress if MTA (My Talk Address) (one-byte address).
Service Request SR1
Complete Capability. The interface sets the SRQ line true if there is an enabled service
request condition.
Remote/Local RL1
Complete capability. Interface selects either local or remote information. In local mode
the KLP executes front panel commands, but can be set to remote mode via IEEE 488
bus. When in Remote mode all front panel keys are disabled except LOCAL. LOCAL key
can be disabled using keypad lockout command (see Appendix B, PAR. B.81) so that
only the controller or a power on condition can restore Local mode.
Parallel Poll PP0 No Capability
Device Clear DC1 Complete Capability. KLP accepts DCL (Device Clear) and SDC (Selected Device Clear).
Device Trigger DT1 Respond to *TRG and <GET> trigger functions.
Controller C0 No Capability
TABLE 3-3. IEEE 488 (GPIB) BUS COMMAND MODE MESSAGES
MNEMONIC
MESSAGE
DESCRIPTION
COMMENTS
DCL Device Clear Received
GET Group Execute Trigger Received
GTL Go To Local Received
IFC Interface Clear Received
LLO Local Lockout Received
MLA My Listen Address Received
MTA My Talk Address Received
OTA Other Talk Address Received (Not Used)
RFD Ready for Data Received or Sent
SDC Selected Device Clear Received
SPD Serial Poll Disable Received