Communication Error Status Enable (Cese); Overload Status (Olsr) - Stanford Research Systems SIM918 Operating And Service Manual

3.5 Status Model
HWOVRN : Hardware Overrun. Set when an incoming serial data byte is

3.5.6 Communication Error Status Enable (CESE)

3.5.7 Overload Status (OLSR)

SIM918 Precision Current Preamplifier
Weight Bit Flag
1 0 PARITY
2 1 FRAME
4 2 NOISE
8 3 HWOVRN
16 4 OVR
32 5 RTSH
64 6 CTSH
128 7 DCAS
PARITY : Parity error. Set by serial parity mismatch on the incoming data
byte.
FRAME : Framing error. Set when an incoming serial data byte is missing
the STOP bit.
NOISE : Noise error. Set when an incoming serial data byte does not
present a steady logic level during each asynchronous bit-
period window.
lost due to internal processor latency. Causes the input bu er
to be flushed, and resets the command parser.
OVR : Input bu er Overrun. Set when the input bu er is overrun by
the incoming data. Causes the input bu er to be flushed, and
resets the command parser.
RTSH : RTS Holdo Event. Unused in the SIM918.
CTSH : CTS Holdo Event. Unused in the SIM918.
DCAS : Device Clear. Indicates that the SIM918 received the Device
Clear signal (an RS–232 break ). Clears the input bu er and
the output queue, and resets the command parser.
The CESE acts as a bitwise AND with the CESR register to produce
the single-bit CESB message in the Status Byte Register (SB). The
register can be set and queried with the CESE(?) command.
At power-on, this register is cleared.
The Overload Status Register consists of 3 event flags; each of the
flags is set by the corresponding overload, and cleared only by read-
ing the register or with the *CLS command. Reading a single bit
(with the OLSR? i query) clears only Bit i.
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