Toshiba TOSVERT VF-S11 - Manual (Page 44)

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7.3. Timer function()
This function detects any normal data that is not detected even once within an arbitrarily predeter-
mined time.
The timer function is used to detect breaks in cables during communications and to trip an inverter
() if the inverter has received no data within the time specified using this function. If the in-
verter number does not match or if a format error occurs, preventing the inverter from returning data
to the computer, this function will assume that the inverter has not received any data.
■ How to set the timer
The communication error trip time parameter () is set to 0 (timer off) by default.
* Timer adjustment range
About 1 sec. (01H) to about 100 sec. (64H) / Timer off (0H)
■ How to start the timer
If the timer is set from the operation panel, it will start automatically the instant when communication
is established for the first time after the setting.
If the timer is set from the computer, it will start automatically the instant when communication is es-
tablished after the setting.
If the timer setting is stored in the EEPROM, the timer will start when communication is established
for the first time after the power has been turned on.
Note that, if the inverter number does not match or if a format error occurs, preventing the inverter
from returning data, the timer function will assume that no communication has taken place and will
not start.
■ How to disable the timer
To disable the timer, set its parameter to 0.
Ex.: To disable the timer function from the computer (To store the timer setting in the EEPROM)
Computer → Inverter Inverter → Computer
(W08030) CR (W08030000) CR ... Sets the timer parameter to 0 to disable it.
■ Timer
The timer measures the time
elapsed before the inverter ac-
knowledges receipt of data after it
acknowledged receipt of the previ-
ous data.
Time-out period
PC → INV PC → INV
INV → PC
Computer link