17
OUTPUT FLAGS
PLC $
$$
$ NC
Y400 MACHINE ON lamp.
U400 = softkey MACHINE ON is inverted,
D400 = the inverse state is turned off.
Y401 MACHINE ON acknowledged (ACK.).
U401 = acknowledgement of the MACHINE ON push button (I412), i.e. the
feedback by the PLC of having sensed the depression of MACHINE ON; the
NC may switch flag I412 to 0.
D401 = after U401 has been issued, waiting for flag I412 being switched to 0; then
D401 has to be issued (hand-shake).
Y402 INHIBITION OF BLOCK START (REC.ST).
U402 = setting the inhibition of block start. The NC gets in STOP state before the
execution of each technological block (record), and delivers a message
INHIBITION OF BLOCK START.
D402 = inhibition of block start cancelled.
Y403 INHIBITION OF WRITE IN MEMORY (PROTECT).
U403 = setting the protection of the technological program memory against
transcript. In the event of an attempt at transcript, the NC returns the message
WRITE IN MEMORY INHIBITED.
D403 = protection of technological program memory against re-writing cancelled.
Y404 MACHINE ON
U404 = activation of zero-voltage output enabled. The NC enables the internal NC
READY state to be connected to the 24V output. The 24V MACHINE ON
output will be active only when lamp NC READY on the Operator´s panel
is illuminated and U404 prevails.
D404 = unconditional cutout of the MACHINE ON output
Y405 EMERGENCY STATE
U405 = the NC is brought to alarm state. The NC returns an error signal "ESTATE?"
for each PLC activity called from the NC (calling modules :005-:012) and for
any axis-moving command.
D405 = no alarm state.
Y406 CYCLE STOP
U406 = cycle stop. This condition is produced by a 0...1 change of the flag.
D406 = cycle-stop request released.
Y407 CYCLE START.
U407 = cycle start. This condition is produced by a 0...1 change of flag Y407
provided Y406=0.
D407 = cycle-start request released.
Y412 LIM3-
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