Rohde & Schwarz 1145.1010.04/05/06, Руководство по эксплуатации

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Rear Panel Connectors R&S
®
ZVA/ZVB/ZVT
1145.1084.12 8.12 E-3
Status word ibsta
All functions send back a status word that provides information on the status of the RSIB interface. The
following bits are defined:
Bit
name Bit Hex
code
Description
ERR 15 8000 This bit is set if an error occurs during a function call. If this bit is set,
iberr
contains an error code
which specifies the error.
TIMO 14 4000 This bit is set if a timeout occurs during a function call. A timeout may occur in the following
situations:
while waiting for an SRQ with the function
RSDLLWaitSrq()
.
if no acknowledgment is received for data sent to an instrument with
RSDLLibwrt()
or
RSDLLilwrt()
.
if no response from server to a data request with function
RSDLLibrd()
or
RSDLLilrd()
.
CMPL 8 0100 This bit is set if the reply of the IEC/IEEE-bus parser is completely read. If a reply of the parser is
read with the function
RSDLLilrd()
and the buffer length is not sufficient, the bit is cleared.
Error variable iberr
If the ERR bit (8000h) is set in the status word,
iberr
contains an error code that specifies the error.
The RSIB has error codes of its own independent of the National Instrument interface.
Error Error
code
Description
IBERR_DEVICE_REGISTER 1 RSIB.DLL cannot register any new device.
IBERR_CONNECT 2 Link to the device has failed.
IBERR_NO_DEVICE 3 An interface function was called with an invalid device handle.
IBERR_MEM 4 No free memory available.
IBERR_TIMEOUT 5 Timeout has occurred.
IBERR_BUSY 6 The RSIB interface is blocked by a function not yet completed.
Windows is not blocked, for example, by function RSDLLibrd() if data are still to be
transmitted in response to this function. In this case a new call is possible. Further
calls are however rejected by RSIB.DLL with error code
IBERR_BUSY
.
IBERR_FILE 7 Error in reading from or writing to a file.
IBERR_SEMA 8 Error upon creating or assigning a semaphore (only under Unix)
Count variable - ibcntl
The variable ibcntl is updated with the number of bytes transmitted on every read and write function
call.