INSTALLATIONS
J2: Parallel Port Connector
The following table describes the pin out assignments of this connector.
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| Signal Name | Pin # | Pin # |
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| Signal Name |
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| Line printer strobe | 1 | 14 |
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| AutoFeed |
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| PD0, parallel data 0 | 2 | 15 |
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| Error |
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| PD1, parallel data 1 | 3 | 16 |
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| Initialize |
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| PD2, parallel data 2 | 4 | 17 |
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| Select |
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| PD3, parallel data 3 | 5 | 18 |
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| Ground |
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| PD4, parallel data 4 | 6 | 19 |
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| Ground |
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| PD5, parallel data 5 | 7 | 20 |
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| Ground |
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| PD6, parallel data 6 | 8 | 21 |
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| Ground |
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| PD7, parallel data 7 | 9 | 22 |
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| Ground |
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J2 |
| ACK, acknowledge | 10 | 23 |
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| Ground |
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| Busy | 11 | 24 |
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| Ground |
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| Paper empty | 12 | 25 |
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| Ground |
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| Select | 13 | N/A |
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| N/A |
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J4, J5: COM1 and COM2 Serial Ports Connector
J4 and J5 both
J4 | Pin # |
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| Signal Name |
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Fixed as |
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| RS | RS | RS |
1 |
| DCD | TX- | DATA- | |
J5 | 2 |
| RX | TX+ | DATA+ |
3 |
| TX | RX+ | NC | |
Configurable |
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4 |
| DTR | RX- | NC | |
as |
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5 |
| GND | GND | GND | |
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6 |
| DSR | RTS- | NC | |
with jumpers |
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7 |
| RTS | RTS+ | NC | |
JP2/JP3/JP4 |
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8 |
| CTS | CTS+ | NC | |
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| 9 |
| RI | CTS- | NC |
| 10 |
| NC | NC | NC |
IB850 User’s Manual | 25 |
