Allen-Bradley 1770-M10 Manual de instalación Pagina 54

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Appendix
C
C1
Pin Assignments
In this appendix we list the pin assignments for:
Small Computer System Interface (SCSI)
RS422 interface
Table 1.E
SCSI
Pin Assignments
Pin Number Signal Abbreviation
2 Data Bit 0 DB (0)
4 Data Bit 1 DB (1)
6 Data Bit 2 DB (2)
8 Data Bit 3 DB (3)
10 Data Bit 4 DB (4)
12 Data Bit 5 DB (5)
14 Data Bit 6 DB (6)
16 Data Bit 7 DB (7)
18 Data Bit Parity DB (P)
20 Ground Ground
22 Ground Ground
24 Ground Ground
26 Terminator Power(optional +5V) TERMPWR
28 Ground Ground
30 Ground Ground
32 Attention ATN
34 Ground Ground
36 Busy BSY
Objectives
Small Computer System
Interface (SCSI)
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