Toshiba PROSEC T1 T1S, 6F3B0250 user manual Counter devices and registers C./C, Data registers D

6F3B0250

6. Programming Information

Counter devices and registers (C./C)

The counter registers (C) are used for storing the count value of the counter (CNT) and the up-down counter (U/D) instructions.

The counter devices (C.) works as the output of the counter instructions.

It is possible to specify the C registers as retentive to retain their data in the event of a power failure. See section 5.3.

Data registers (D)

Functionally the data registers (D) are the same as auxiliary relay registers (RW) except that the D registers cannot be used as devices.

A part of the data registers are saved in the built-in EEPROM as fixed data and transferred into the RAM at the initial load. See section 5.2.

Range of the data registers saved in the EEPROM:

T1	T1S
D0000 to D0511	User specified range
	starting with D0000
	(up to 2048 words)

It is possible to specify the D registers as retentive to retain their data in the event of a power failure. See section 5.3.

Index registers (I, J, and K)

These index registers are used for indirect addressing for a register.

For example, if the value of I is 100 in the following register expression, it designates D0100. For details, refer to section 6.2.

I
D0000	D0100 if I=100

96 T1/T1S User’s Manual

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