Handling Timers As Numeric Devices - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
4.5.7

Handling timers as numeric devices

In timers, the output contact operating in accordance with the set value is used in some cases, and the
present value is used as numeric data for control in other cases.
The figures below show the structure of the timer present value registers. When a timer number is specified
in an operand of an applied instruction, the timer is handled as a device storing 16-bit or 32-bit data in the
same way as data registers.
1. Structure of timer present value register
1) 16-bit
High
order
0
b15
*1
Sign
0: Positive
number
1: Negative
number
*1 The sign is valid only when a timer is handled as a substitute for data register.
2) 32-bit
High
order
0
b31
Sign
0: Positive
number
1: Negative
number
2. Use examples in applied instructions
For the full use of timers as numeric devices, refer to the explanation of applied instructions later.
102
16 bits
1 0 1 0 1 0 1 0 1 0 1
1 0 1 0 1 0 1 0 1 0
Low
Available numeric value range
order
16-bit : 0 to 32,767
0 1 0 1
b0 32-bit : -2,147,483,648 to +2,147,483,647
32 bits
1 1 1 1 0 0
1 0 1 0 1
4 Devices in Detail
0 0 1 1 1 1 0 0 0 0
b0
4.5 Timer [T]
Low
order