< 5. Ladder Program Training >
5-19
TI 34M6A82-01E
2nd Edition : Nov. 1, 2002-00
What are Local Devices?
-
Local devices are devices specific to a block. Unlike normal devices (global
devices), local devices are visible and can be used only within a block.
- You can allocate some normal devices as local devices in the configuration (you will
learn how to do this in Section 5.3.3).
- Local devices are prefixed with a slash (/) character for identification.
Notation Examples
/I00001
Local internal relay
/D00001
Local data register
/B00001
Local file register
/T00001 Local
timer
/C00001 Local
counter
Addresses of local devices range from 1 to the number of local devices defined for
each block. For example, if 32 internal relays (I) are allocated for local devices, then
the addresses of the local devices run from /I00001 to /I00032.
You can set the number of local devices in increments of 32 for internal relays, 2 for
data and file registers, and 1 for timers and counters.
Copying and Editing a Block
1. Double-click “DEMO1” on the block list in the project window (displayed on the left
of the screen).
2. Copy the DEMO1 program and paste it onto the Edit Block DEMO2 screen.
3. Close the “Edit Block: DEMO1” window.
4. Change the circuit comment to “DEMO2”.
5. Select [File]–[Save].
