Count Value Registers - Toshiba PROSEC T3 User Manual

4.2.3

Count value registers

The addresses 0, 1 and 8, 9 store the count values for channel 1 and channel 2
respectively.
These data can be read into the T3 by READ instruction. Also, the T3 can write
(change) the count values by WRITE instruction.
<Channel 1>
F
No use (always 0)
<Channel 2>
F
No use (always 0)
The count value is 24-bit length.
The lower address (address 0 or 8) stores the lower 16-bit of the count value.
The higher address (address 1 or 9) stores the upper 8-bit of the count value.
These subsequent 2 addresses configure 24-bit count value register. (the count value
is 0 to 16777215)
The upper 8 bits of the higher address are all 0. When writing a double-word (32-bit)
data into these addresses (presetting the count value), the upper 8 bits should be 0.
NOTE
In this manual, double-word (32-bit) register is expressed as,
upper register ⋅ lower register
For example;
D0011⋅D0010 ... for T3's register
9⋅8 ................... for PI312's buffer memory address
8 7
Count value (upper)
Address 1
8 7
Count value (upper)
Address 9
4. Register Configuration
0 F
Count value (lower)
Address 0
0 F
Count value (lower)
Address 8
0
0
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