Special Relays (Sm); Timer (T) - Mitsubishi Electric MELSEC Q Series Programming Manual

5 SEQUENCE INSTRUCTIONS FOR MOTION CPU

5.1.3 Special relays (SM)

5.1.4 Timer (T)

X5
Input conditions
Special relay has predetermined applications in the system. Do not use the special
relay as a temporary memory like an internal relay.
(1) This relay is cleared when the power is turned OFF.
(2) There is no limit to the number of "A" contacts and "B" contacts of the special
relays that can be used in the program.
(3) The special relay number is expressed with a decimal.
The 100ms timer, 10ms timer and 100ms retentive timer are available for this count-up
type timer
• With the device T, the contact/coil is handled as bit device, and the current value is
handled as word device. In the function instructions described after, the word device
T indicates the current value even if there is no description about it.
• Turning the power OFF clears this device (current value = 0).
• The timer number is expressed as a decimal.
(1) 10ms timer (T0 to T15, T104 to T143)
(a) When the input conditions are set, the count starts. When the set value is
counted, that timer contact will turn ON.
(b) If the input conditions are turned OFF, the 10ms timer count value will be set
to 0, and the contact will turn OFF.
(c) The value is set with a decimal (Kn), and can be designated from 1 to 32767
(×0.01[s]). The data register (D) data can also be used as the setting value.
10ms timer
K500 X5
T0
T0 coil
5 seconds
T0 contact
5 - 3