Hitachi NT2021XA, Instruction Manual

Page: 21 / 84

Chapter 2 Syntax
2-5
(4) Input / output control, timer control, and inverter control instructions
Instruction
name
Instruction format
Description
Mnemonic code Parameter 1 Parameter 2 Parameter 3 Parameter 4 Parameter 5
General-
purpose
contact input
<variable> = X (ii)
Fetches general-purpose contact
information and stores it in <variable>. (0 =
off, 1 = on)
<variable> = Xw
Fetches general-purpose contact
information and stores it as word data in
<variable>.
General-
purpose
contact
output
Y (ii) =
<variable /
constant) Outputs bit data to a general-purpose
contact. (0 = off, 1 = on)
Yw =
<variable /
constant) Outputs word data to a general-purpose
contact.
Inverter
operation
command
<input terminal>
= <variable /
constant) Operates an inverter input terminal. (0 = off,
1 = on)
Inverter
operation
monitoring
<variable> =
<output
terminal> Fetches information from an inverter output
terminal.
<variable> =
<input
terminal> = Fetches information from an inverter input
terminal.
Delay
operation
delay on <variable 1> TD (k)
<variable 2/
constant>
Turns on the terminal specified by <variable
1> after the time specified by
<variable2/constant> elapses.
delay off <variable 1> TD (k)
<variable 2/
constant>
Turns off the terminal specified by <variable
1> after the time specified by
<variable2/constant> elapses.
Timer control
timer set TD (k)
<variable /
constant) Sets <variable/constant> in a specified
timer and starts the timer.
timer off TD (k) Stops the specified timer.
Internal user
contact
control
<variable> = UB (ii)
Fetches internal user contact information
and stores it in <variable>. (0 = off, 1 = on)
<variable> = UBw
Fetches internal user contact information
and stores it as word data in <variable>.
UB (ii) =
<variable /
constant) Outputs bit data to an internal user contact.
(0 = off, 1 = on)
UBw =
<variable /
constant) Outputs word data to an internal user
contact.
Parameter
change
chg param
<display
code> <variable /
constant) Replaces the content of <display code>
with <variable/constant>.
Parameter
reading
mon param
<display
code>
<variable>
Reads the content of <display code> into
<variable>.
Parameter
writing
eepwrt
Stores a data of only one parameter
changed by chg param command that is
issued immediately after the execution of
eeprwrt command to EEPROM. (SJ700/
L700/ SJ700B series doesn't correspond.)
Clock
command
rtcset on <variable>
The clock data is substituted for six bytes
that make <variable> a head. Moreover,
the clock data is regularly updated. (Only
WJ200 Step2 corresponds.)
rtcset off <variable>
The clock data is substituted for six bytes
that make <variable> a head. Moreover,
the update of the clock data is stopped.
(Only WJ200 Step2 corresponds.)
Stop
inverter
stop The inverter decelerate and stop the motor
User
monitor
Umon(ii) = <variable>
Displays <variable> on user monitor (ii)
Umon(ii) = <variable1> <operators> <variable2>
Displays the result of operation with
<variable1> and <variable2> on user
monitor (ii)
<variable>= Umon(ii)
Value of user monitor (ii) is read out to
<variable>
User trip trip <variable> Makes the inverter trip