+ Receive current loop data (20 mA)
17
No Connection
18
Data Terminal Ready (DTR)
19
No Connection
20
Ring Indicator (RI)
21
* EIA ON + 12V Option
22
* EIA OFF - 12V Option
23
- Receive current loop return (20 mA)
24
------------------------------------------------------------------------------
* Pins 23 and 24 - No connection on the full height Serial Interface Board.
==============================================================================
Table 8.9-2.
25 Pin Parallel Connector
==============================================================================
Signal Names and Description
Pin Number
------------------------------------------------------------------------------
Strobe
1
Data Bit 0
2
Data Bit 1
3
Data Bit 2
4
Data Bit 3
5
Data Bit 4
6
Data Bit 5
7
Data Bit 6
8
Data Bit 7
9
Acknowledge
10
Busy
11
Paper End
12
Select
13
Auto Feed
14
Error
15
Initialize Printer
16
Select Input
17
Signal Ground
18 - 25
==============================================================================
