Curtis Instruments 1351 - Page 114

5 — VEHICLE CONTROL LANGUAGE (VCL)
Curtis Model 1351 – December 2018
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 SRDO_Rcv_Handle = Setup_Receive_SRDO() Sets up the timing
detection and fault functions for a receive SRDO
e receive mailboxes must already be setup prior to using this function. Since the
SRDO consists of two messages and is received and checked by both CAN ports,
there are four mailboxes used total. Note that Only the Primary First mailbox must
be dened since the Second message is identical with the data inverted.

Setup_Receive_SRDO(Primary_Mailbox_Handle_first,
primary_Mailbox_Handle_second, Supervisor_
mailbox_handle_first, supervisor_mailbox_handle_
second, Cycle_Timeout, Interval_Timeout)
:
Primary_Mailbox_Handle_first The Primary mailbox
(Primary_Handler)
Primary_Mailbox_Handle_second The Primary mailbox
(Primary_Handler)
Supervisor_Mailbox_Handle_first e Supervisory mailbox
(Supervisor_Handler)
Supervisor_Mailbox_Handle_second e Supervisory mailbox
(Supervisor_Handler)
Cycle_Timeout The max time allowed between Primary
Mailbox rst messages receives
Interval_Timeout The max time, in milliseconds, allowed
between reception of first and second
mailbox receives
:
The Handle to the SRDO reception function. It
is used to enable and to check the status of
the SRDO receive function
 :
 Status = check_SRDO_receive()Check for proper timing and data
integrity of the SRDO reception

check_SRDO_receive(SRDO_Rcv_Handle)
SRDO_Rcv_Handle is the handle provided by the SRDO Receive Setup function
(above). It is used to enable the SRDO function (aer the mailboxes have all be
setup) and to check the SRDO timing and data integrity.
If it returns a non-zero value into Status, the SRDO timing or address is wrong.
e data will not be placed into the dened variables for the RSDO data.