User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
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134
Example - RTU Diagnostics / Trouble Shooting
Sometimes it may be difficult to know why an RTU is behaving strangely. By logging the value of the RTU
status register (#YSTAT) or another diagnostic register (eg. #YDIAG, #YFLAGS), the history of the RTU can
be reviewed from the event logs.
│ │
├RTU Diagnostics ┼ ┼ ┼ ┤
│ │
│NewRTUStatus LogRTUStatus │
│ #YSTAT Type 1 │
├──[CHANGE]────────────────────────────────────────────────────────(Event Log)─┤
│ #YSTAT │
│ │
Figure: RTU Diagnostics by logging the RTU status register on any change.
Example - Indirect Addressing
This example shows how to add 10 consecutive local registers by using indirect addressing. Indirect
addressing can reduce the amount of ladder logic required for repetitious tasks.
The following registers are used:
#R1 = pointer register (initial value is used to address the first of 10 consecutive registers to add)
#R2 = loop counter
#R3 = total
#R101 to #R110 = registers to add
│ │
├Add 10 local registers (#R101-#R110) using indirect addressing ┤
│ │
├Initialise registers ┼ ┼ ┼ ┤
│ │
│ Pointer │
│ #R1 │
├────────────────────────────────────────────────────────────────┬───(Copy)────┤
│ │ 101 │
│ │Loop Counter │
│ │ #R2 │
├ ┼ ┼ ┼ ┼ ├───(Copy)────┤
│ │ 0 │
│ │Total │
│ │ #R3 │
├ ┼ ┼ ┼ ┼ └───(Copy)────┤
│ 0 │
├Add registers ┼ ┼ ┼ ┼ ┤
│ │
│LoopStart: Loop Counter Total │
│ #R2 ┌ #R3 ┐│
├──────────────────[<]───────────────────────────────────────────┬┤= #R3 ├┤
│ 10 │└+ #R[R1] ┘│
│ │Pointer │
│ │ #R1 │
├ ┼ ┼ ┼ ┼ ├────(Inc)────┤
│ │ │
│ │Loop Counter │
│ │ #R2 │
├ ┼ ┼ ┼ ┼ ├────(Inc)────┤
│ │ │
│ │LoopStart │
│ │ │
├ ┼ ┼ ┼ ┼ └──( JUMP )───┤
│ LoopStart │
│ │
Figure: Adding 10 registers using indirect addressing