SDM-CAN CAN-Bus Interface User Guide
3.5.4 Using the Interrupt Function By indexing (‘--‘) the No. of bits parameter, when a new value that an instruction
refers to is received the SDM-CAN I/O interrupt is enabled. This can be used to
set a control port high and run an interrupt subroutine. An example of using the
interrupt function is shown below.
;{CR23X}
;
*Table 1 Program
01: 1 Execution Interval (seconds)
;Set flag 1 high to set SDM-CAN internal software switches
1: If Flag/Port (P91)
1: 11 Do if Flag 1 is High
2: 30 Then Do
;Load input location with value for switches
2: Z=F (P30)
1: 10 F
2: 0 Exponent of 10
3: 3 Z Loc [ Switches ]
;Send switch settings to SDM-CAN
3: SDM-CAN (P118)
1: 0 SDM Address
2: 2 Time Quanta
3: 5 Tseg1
4: 2 Tseg2
5: 1 ID Bits 0..10
6: 0 ID Bits 11..23
7: 0 ID Bits 24..28
8: 32 Set switches
9: 00 Start Bit No.
10: 00 No. of Bits
11: 00 No. of Values
12: 3 Loc [ Switches ]
13: 1.0 Mult
14: 0.0 Offset
;Set flag 1 low after sending switch settings
4: Do (P86)
1: 21 Set Flag 1 Low
5: End (P95)
*Table 2 Program
02: 0.0000 Execution Interval (seconds)
*Table 3 Subroutines
3-20