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ML720/721 Printer Handbook 111
1
2
3
4
5
6
7
8-10
11
12-19
20
21-25
From Printer
To Printer
From Printer
To Printer
From Printer
From Printer
Protective Ground
Transmitted Data
Received Data
Request to Send
Not used
Data Set Ready
Signal Ground
Not Used
Supervisory Send Data
Not Used
Data Terminal Ready
Not Used
Pin Signal Direction
PG
TD
RD
RTS
DSR
SG
SSD
DTR
Symbol
Pin Assignments for Serial Interface Signals