External communications
A36951-C.doc
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Signals: inputs and outputs
The four terminal blocks on the industrial interface board are arranged as follows:
Ƒ Terminal block B1: 28-pin CPU signals
Ƒ Terminal block B2: 32-pin Head 1 signals
Ƒ Terminal block B3: 32-pin Head 2 signals (on two-head printers only)
Ƒ Terminal block B4: 9-pin Alarm relay signals
Most signals are also available on the HE 14 connector.
ʄ Terminal block B1: Communication
Pin
HE14
connector
Legend Signal I/O
Comments
B1-5 J10-3 TXD TXDEXT O TX RS232
B1-6 J10-4 RXD RXDEXT I RX RS232
B1-7 J10-2 DTR DTREXT O DTR RS232
B1-8 J10-1 DSR DSREXT I DSR RS232
B1-24 J13-10 TD4+ TXD422+ O TX RS422 -TX RS422 +
B1-23 J13-9 TD4- TXD422- O TX RS422 -
B1-18 J13-4 RD4+ RXD422+ I RX RS422 +
B1-17 J13-3 RD4- RXD422- I RX RS422 -
B1-22 J13-8 DT4+ DTR422+ O DTR RS422 +
B1-21 J13-7 DT4- DTR422- O DTR RS422 -
B1-16 J13-2 DS4+ DSR422+ I DSR RS422 +
B1-15 J13-1 DS4- DSR422- I DSR RS422 -
B1-20 VAL422+ VALID422+ I Enable RS422
B1-19 VAL422- VALID422- I Enable RS422
B1-10 OT1 OUT1 O Positive terminal not used
B1-9 COT1 COMOUT1 O Negative terminal not used
B1-12 IN1 IN1 I Positive terminal not used
B1-11 CIN1 COMIN1 I Negative terminal not used
B1-13/14/25 GND GND
B1-26 +5V +5V O
B1-27 +15V +15V O
B1-28 -15V -15V O
CAUTION : The +5V, +15V and -15V outputs are not fuse protected.
If using these supplies, care must be taken.
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