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2. Signals
a.
PRCB input signals
(1) OB1 RXD (OB1 to ICB)
Serial data which informs ICB of the operation
state of OB1.
(2) OB1 TXD REQ (OB1 to ICB)
Signal which indicates that data is being sent
from OB1 to ICB.
[H]: PRCB stops sending the PB1 TXD signal.
(3) OB1 TXD ACK (OB1 to ICB)
Acknowledgment signal which is returned each
time OB1 receives one-byte data from ICB.
b.
PRCB output signal
(1) OB1 TXD (ICB to OB1)
Serial data which informs OB1 of the machine
status that is known to ICB.
(2) OB1 TXD REQ (ICB to OB1)
Signal which indicates that data is being sent
from ICB to OB1.
[H]: OB1 stops sending the OB1 RXD signal.
(3) OB1 TXD ACK (ICB to OB1)
Acknowledgment signal which is returned each
time ICB receives one-byte data from OB1.
c.
ADUSDB output signal
(1) JAM1-5 (ADUSDB to JAMIB)
LED ON control signal to JAMIB (jam indicator
board).
The LED corresponding to the jam location is
turned ON on the JAMIB.
d.
OB2 input signal
(1) WT LED (PSWB to OB2)
Weekly timer LED ON/OFF control signal.
(2) ST LED (PPSWB to B2)
LCD backlight ON/OFF control signal.
2-P-7
OTHER KINDS OF CONTROL
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