Curtis Instruments 1351 User Manual

5 — VEHICLE CONTROL LANGUAGE (VCL)
Curtis Model 1351 – December 2018
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pg. 80
SDO Write Message
To retain parameter values in non-volatile memory (NVM) via CANopen SDO write messages, write a
non-zero value to SDO_NVM_Write_Enable (Object Index 0x2008, sub-index 0x00) before changing
parameter values. is will cause parameter changes to be written to non-volatile FRAM memory.
Note, having the SDO_NVM_Write_Enable set to zero only saves the parameter changes to ephemeral
(RAM) memory.
VCL Function Examples
ese functions are applicable to the 1315 System Controller. See the System Information (sys info) le
that is available in the CSS, and listed in Appendix A.
Set_Watchdog_Timeout() p. 81
Set_Watchdog_Fault_Action() p. 82
Kick_Watchdog() p. 83
MAP_TWO_POINTS() p. 84
Table 21 VCL variables by memory type
Memory Quantity Name Object Range Save Type
FRAM 300 P_User1 – P_User300 0x4000 – 0x412B Manual Save
RAM 300 Autouser1 – Autouser300 0x4200 – 0x432B Lost at shutdown
FRAM 160 NVUser1 – NVUser160 0x4400 – 0x449F Auto save
RAM 120 User1 – User120 0x4500 – 0x4577 Lost at shutdown

Curtis Instruments 1351 Specifications

General

Brand	Curtis Instruments
Model	1351
Category	I/O Systems
Language	English