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| A sixteen bit register in the PLC can represent BCD coded numbers ranging from 0000 to 9999. If the most significant bit of a register is set, then a negative sign will be displayed. | ||
This
is a 1:1 bitmap downloaded directly from the AMLCD-240 touchscreen. The UP
and DN buttons appear to push down when touched, and the SET values are
automatically incremented or decremented without requiring intervention from the
host PLC. SET values are periodically written from the AMLCD-240 to
registers in the PLC. The AMLCD-240 polls the host PLC to read the ACTUAL
values from PLC registers.
A sixteen bit register in the PLC can represent BCD coded numbers ranging from 0000 to 9999.
If the most significant bit of a register is set, then a negative sign will be displayed.