Campbell Scientific CR5000 Measurement and Control Module - Manual (Page 160)

Section 7. Measurement Instructions
7-34
Parameter
& Data Type Enter
1 SDM-CAN returns -99999 if a data value
is requested by the datalogger and a new
value has not been captured from the
network since the last request.
2-9 Currently not used.
C 0 Disable I/O interrupts (default).
1 Enable I/O interrupts, pulsed mode.
2 Enable I/O interrupts, fast mode.
3-7 Currently not used.
8 Place the SDM-CAN into low power
stand-by mode
9 Leave switch setting unchanged.
D 0 Listen only (error passive) mode. CAN
transmissions are not confirmed.
1 Transmit once. Data will not be
retransmitted in case of error or loss of
arbitration. Frames received without error
are acknowledged.
2 Self-reception. A frame transmitted from
the SDM-CAN that was acknowledged
by an external node will also be received
by the SDM-CAN but no retransmission
will occur in the event of loss of
arbitration or error. Frames received
correctly from an external node are
acknowledged.
3 Normal, retransmission will occur in the
event of loss of arbitration or error.
Frames received correctly from an
external node are acknowledged. This is
the typical setting to use if the SDM-
CAN is to be used to transmit data.
4 Transmit once; self-test. The SDM-CAN
will perform a successful transmission
even if there is no acknowledgment from
an external CAN node. Frames received
correctly from an external node are
acknowledged.
5 Self-reception; self -test. The SDM-CAN
will perform a successful transmission
even if there is no acknowledgment from
an external CAN node. Frames received
correctly from an external node are
acknowledged. SDM-CAN will receive
its own transmission.