n BUSY = 1 indicates that the function just processed.
n BUSY = 0 indicates that the function is finished.
n There is an internal clock with a resolution of 1µs running in every SPEED-Bus
module.
n The returned value corresponds to the time at the SPEED-Bus module, on which the
trigger event occurred.
n TIMESTAMP is only available at the edge triggered oscilloscope operation.
n It is valid as long as the job is running (RETVAL = 7xxxh) and bit 4 of byte 0 is set
respectively the job has been finished without an error (RETVAL = 0000h).
The length parameter realized as IN/OUT is variably interpreted depending on the
selected mode at the function call.
Mode: start (MODE: = 01h)
At MODE = 01h this parameter may only be used at the manual oscilloscope start. Here
the requested number of values per channel to be buffered may be assigned. In this
mode there is no value reported by LEN.
Mode: read (MODE: = 00h or 80h)
At MODE = 00h respectively 80h the number of values to be read may be set. This
parameter is ignored in FIFO operation. The number of the read values is returned by
LEN.
In addition to the module specific error codes listed here, there general FC/SFC error
information may be returned as well.
RETVAL Description depending on the BUSY-Bit BUSY
Byte
0 Bit 1, 0:
00: Call with REQ: = 0 (idle, waiting for REQ = 1) 0
01: First call with REQ: = 1 1
10: Subsequent call with REQ: = 1 1
11: Oscilloscope is just recording 1
Bit 2: REQ: = 1, but recording was not yet started.
(MODE: = 00h or MODE: = 80h)
0
Bit 3: reserved -
Bit 4: Trigger event occurred and recording is just running. 1
Bit 5: Waiting for trigger event 1
Bit 7…6: reserved -
1 Bit 0: reserved -
Bit 1: The number of recorded values exceeds the target area defined by RECORD (in
words).
0
Bit 2: The number of the recorded values exceeds the area defined by LEN and
OFFSET.
0
Bit 3: Buffer overflow in FIFO operation. 0
BUSY
TIMESTAMP
LEN
RETVAL (Return value)
VIPA SPEED7
System Blocks
System Functions > FC/SFC 193 - AI_OSZI - Oscilloscope-/FIFO function
HB00 | OPL_SP7 | Operation list | en | 18-30 924
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