Curtis 1239E - VCL FUNCTIONS SPECIFIC TO 1239 E;1269 E CONTROLLERS; ENABLE_PRECHARGE()

10 — VEHICLE CONTROL LANGUAGE (VCL)
Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
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pg. 120
OEM‑dened User Faults
e operating system provides the capability to create OEM-dened custom faults using VCL. Just as with
system faults, the VCL fault codes are ashed on the controller Status LEDs and fault text is displayed on
the 1313/1314 System Faults and Fault History menus. Optionally, the VCL can assign fault actions to occur
automatically when the associated fault is set. Sixteen VCL faults are available, stored in the VCL variables
UserFault1 and UserFault2. e UserFault1,2 variables are Read/Write (R/W) and the 16 faults are mapped
& stored in the lower byte of each variable as shown below:
UserFaultl
Bit0 = VCLfault1 (Code 51)
Bit1 = VCLfault2 (Code 52)
Bit2 = VCLfault3 (Code 53)
Bit3 = VCLfault4 (Code 54)
Bit4 = VCLfault5 (Code 55)
Bit5 = VCLfault6 (Code 56)
Bit6 = VCLfault7 (Code 57)
Bit7 = VCLfault8 (Code 58)
UserFault2
Bit0 = VCLfault9 (Code 59)
Bit1 = VCLfault10 (Code 61)
Bit2 = VCLfault11 (Code 62)
Bit3 = VCLfault12 (Code 63)
Bit4 = VCLfault13 (Code 64)
Bit5 = VCLfault14 (Code 65)
Bit6 = VCLfault15 (Code 66)
Bit7 = VCLfault16 (Code 67)
e “Code” numbers result in the ashing of the controller status LEDs that help identify the fault without
use of a 1313/1314. Setting the fault in VCL is done by setting the associated fault bit in the UserFault1 and
2 variables. Clearing the fault must also be handled by VCL and is done by clearing the associated fault bit.
For example:
if (BDI-Percentage < 10)
{
UserFault1.2 = ON ; Set VCL Fault bit
}
else
{
UserFault1.2 = OFF ; Clear VCL Fault bit
}
is VCL will check to see if the Battery Discharge Indicator is less than 10%. If it is, UserFault1 Bit1 (Code
52) is set. If the BDI is not less than 10%, the fault is cleared. Using just the VCL above in a program will
only result in the ashing of a code 52 on controller status LEDs and no fault actions will result nor will the
1313/1314 display any text about the fault.